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Antenna Sidelobe Canceller of Kalman Filter 认领 引用
1
作者 Hu, Jia-yuan 《Wuhan University Journal of Natural Sciences》 EI CAS 1999年第2期82-85,共4页
The adaptive array antenna may be considered as a general sidelobe canceller. Directional interference suppression is based on a recursive state estimation of Kalman filter. For the stationary filter,this leads to an ... The adaptive array antenna may be considered as a general sidelobe canceller. Directional interference suppression is based on a recursive state estimation of Kalman filter. For the stationary filter,this leads to an iterative solution of Wiener Hops matrix equation. The performance of sidelobe canceller are studied by computer simulation. The result of simulation shows that the sidelobe canceller may be regarded as a special case of an adaptive array atenna. 展开更多
关键词 Kalmen filter sidelobe canceller adaptive antenna
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Least mean square error difference minimum criterion for adaptive chaotic noise canceller 认领 引用
2
作者 张家树 《Chinese Physics B》 CAS 2007年第2期352-358,共7页
The least mean square error difference （LMS-ED） minimum criterion for an adaptive chaotic noise canceller is proposed in this paper. Different from traditional least mean square error minimum criterion in which the ... The least mean square error difference （LMS-ED） minimum criterion for an adaptive chaotic noise canceller is proposed in this paper. Different from traditional least mean square error minimum criterion in which the error is uncorrelated with the input vector, the proposed LMS-ED minimum criterion tries to minimize the correlation between the error difference and input vector difference. The novel adaptive LMS-ED algorithm is then derived to update the weights of adaptive noise canceller. A comparison between cancelling performances of adaptive least mean square （LMS）, normalized LMS （NLMS） and proposed LMS-ED algorithms is simulated by using three kinds of chaotic noises. The simulation results clearly show that the proposed algorithm outperforms the LMS and NLMS algorithms in achieving small values of steady-state excess mean square error. Moreover, the computational complexity of the proposed LMS-ED algorithm is the same as that of the standard LMS algorithms. 展开更多
关键词 chaotic noise adaptive noise canceller error difference
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Multitap RF Canceller with Single LMS Loop for Adaptive Co-Site Broadband Interference Cancellation 认领 引用 被引量：2
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作者 Jiang Yunhao Liu Zhipeng +4 位作者 Yuan Lei Xu Anfei Wang Hang Zhao Nan Wu Minghu 《China Communications》 SCIE CSCD 2024年第9期179-197,共19页
With the development of wireless communication technology,an urgent problem to be solved is co-site broadband interference on independent communication platforms such as satellites,space stations,aircrafts and ships.A... With the development of wireless communication technology,an urgent problem to be solved is co-site broadband interference on independent communication platforms such as satellites,space stations,aircrafts and ships.Also,the problem of strong selfinterference rejection should be solved in the co-time co-frequency full duplex mode which realizes spectrum multiplication in 5G communication technology.In the research of such interference rejection,interference cancellation technology has been applied.In order to reject multipath interference,multitap double LMS(Least Mean Square)loop interference cancellation system is often used for cancelling RF(Radio Frequency)domain interference cancelling.However,more taps will lead to a more complex structure of the cancellation system.A novel tap single LMS loop adaptive interference cancellation system was proposed to improve the system compactness and reduce the cost.In addition,a mathematical model was built for the proposed cancellation system,the correlation function of CP2FSK(Continuous Phase Binary Frequency Shift Keying)signal was derived,and the quantitative relationship was established between the correlation function and the interference signal bandwidth and tap delay differential.The steadystate weights and the expression of the average interference cancellation ratio(ICR)were deduced in the scenes of LOS(Line of Sight)interference with antenna swaying on an independent communication platform and indoor multipath interference.The quantitative relationship was deeply analyzed between the interference cancellation performance and the parameters such as antenna swing,LMS loop gain,and interference signal bandwidth,which was verified by simulation experiment.And the performance of the proposed interference cancellation system was compared with that of the traditional double LMS loop cancellation system.The results showed that the compact single LMS loop cancellation system can achieve an average interference rejection capability comparable to the double LMS loop cancellation system. 展开更多
关键词 co-site broadband interference delay matching RF interference cancellation single LMS loop
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Analysis of Effects of System Mismatches on the Performance of Adaptive Generalized Sidelobe Canceller and Compensation Methods 认领 引用 被引量：1
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作者 Ni-Ni Rao Bo Zhou +2 位作者 Hao Jiang Cai-Quan Liu Li-Li Yang 《Journal of Electronic Science and Technology》 CAS 2012年第1期61-66,共6页
The effect of system mismatches on an adaptive linear constrained generalized sidelobe canceller(LC-GSC)is discussed in this paper.Based on the array gain index,two classic system mismatches,the direction of arrival(D... The effect of system mismatches on an adaptive linear constrained generalized sidelobe canceller(LC-GSC)is discussed in this paper.Based on the array gain index,two classic system mismatches,the direction of arrival(DOA)mismatch and the mismatches arising from array disturbance,are studied,respectively.To obtain the effective methods for compensating for the system mismatches,we analyze the performance of the improved LC-GSC with the diagonal loading and additional constraints(such as the directional constraints and derivative constraints).The computer simulations show that the techniques of diagonal loading and additional constraints can effectively compensate for the system mismatches.The loss of array gains can be controlled within 3 dB in the presence of 20%of array disturbances or DOA mismatch when the signal-to-noise ratio is less than 10 dB.The analysis illustrates that the proposed compensation methods are valid and feasible. 展开更多
关键词 Array disturbance direction of arrival(DOA)mismatch generalized sidelobe canceller system mismatch.
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Beamforming with the Generalized Sidelobe Cancellerfor Coherent Noise Attenuation in 3D Seismic Data 认领 引用 被引量：1
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作者 HongFei HuTianyue 《Applied Geophysics》 2004年第1期14-19,共6页
This paper presents a new approach for attenuating coherent noise in 3D seismic data. An adaptive beamforming with generalized sidelobe canceller (GSC) design methodology is utilized here as a general form of linearly... This paper presents a new approach for attenuating coherent noise in 3D seismic data. An adaptive beamforming with generalized sidelobe canceller (GSC) design methodology is utilized here as a general form of linearly constrained adaptive beamforming structure. It consists of a fixed beamformer, and a signal-blocking matrix in front of an unconstrained adaptive beamformer.Considerationf of the complexity of the geometry for 3D seismic survey, the 3D beamforming with GSC technique is developed with two key points: (1) sorting along azimuth sections to simplify the relationship between traveltime and offset from 3D to 2D, and (2) dynamic binning scheme to avoid the possible poor folding in some azimuth sections. Both simulation result and real data example show that the newly developed 3D beamforming with GSC yields more credible results at a relative low cost, sufficient stability and good resolution. 展开更多
关键词 beamforming sidelobe canceller coherent noise and 3D seismic data
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Fast Echo Canceller in IP Telephony Gateway 认领 引用
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作者 黄永峰 李星 《Journal of Beijing Institute of Technology》 EI CAS 2003年第1期109-112,共4页
The length of the echo path in the IP telephony system is very long. Generally, the echo canceller is implemented on the IP telephony gateway which needs to perform concurrently multi-channel echo cancellation and voi... The length of the echo path in the IP telephony system is very long. Generally, the echo canceller is implemented on the IP telephony gateway which needs to perform concurrently multi-channel echo cancellation and voice compression. Hence, the most key technique to design the echo canceller is to reduce greatly the computational requirement. For this reason a number of innovative features to implement a fast echo canceller are presented. The key components of this canceller include: the separation of adaptive and cancel filters, non-real-time adaptation and real-time cancellation, sharing VAD algorithms with the speech codec, the incorporation of delay indexing with zero coefficients, and windowing the adaptive filter coefficients to reduce the cost of DSP during the cancellation. Finally, the performance of the echo canceller is summarized; the results of evaluation show that the performance gains for echo cancellation are significant. 展开更多
关键词 echo cancellation voice activity detection adaptive filter
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An Adaptive Howling Canceller Using 2-Tap Linear Predictor 认领 引用
7
作者 Akira Sogami Yosuke Sugiura +1 位作者 Arata Kawamura Youji Iiguni 《Circuits and Systems》 2013年第1期6-10,共5页
This paper proposes an adaptive howling canceller using notch filter and 2-tap linear predictor, where howling consists of a single sinusoidal signal whose magnitude is much greater than other frequency’s magnitudes.... This paper proposes an adaptive howling canceller using notch filter and 2-tap linear predictor, where howling consists of a single sinusoidal signal whose magnitude is much greater than other frequency’s magnitudes. The employed 2-tap linear predictor can quickly detect howling due to its high convergence speed. Although the output signal of the 2-tap linear predictor cannot be directly used as one of a howling canceller, we can obtain the frequency of howling from the filter coefficient. We utilize the filter coefficient of the 2-tap linear predictor to design a notch filter which achieves a very narrow elimination band. The designed notch filter removes only howling and retains other desired signals. Simulation results show that the proposed adaptive howling canceller can quickly detect and effectively remove howling. 展开更多
关键词 Howling Canceller Linear Predictor Notch Filter Single Sinusoidal Signal Convergence Speed
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A widely linear RLS-STAP algorithm based on airborne passive radar with non-convex pseudo-norms 认领 引用
8
作者 Huaji ZHOU Changlong Wang +4 位作者 Kairen XIE Tingwei CHU Zhenyu YI Jianliang YIN Wei WANG 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 2026年第5期34-47,共14页
In this study,we initiate an analysis of the clutter suppression mechanisms in Airborne Passive Radar Systems(APRS)using Space–Time Adaptive Processing(STAP).Additionally,based on the sparsity characteristics of airb... In this study,we initiate an analysis of the clutter suppression mechanisms in Airborne Passive Radar Systems(APRS)using Space–Time Adaptive Processing(STAP).Additionally,based on the sparsity characteristics of airborne clutter and sparse filtering,we formulate a STAP model utilizing a sparse Generalized Sidelobe Canceller(GSC)filter structure.Subsequently,addressing limitations in conventional convex relaxation methods that directly substitute l1 norm for l0 norm,we introduce the pseudo-norm function grand apply it to the constructed STAP model in lieu of the l0 norm.Furthermore,recognizing the prevalence of'non-circular'signals in the context of APRS scenarios,we employ the Wide linear Recursive Least Squares(WRLS)algorithm for solving(gr-WRLS),demonstrating enhanced performance.Finally,the feasibility of the proposed approach is validated through simulated scenarios. 展开更多
关键词 Airborne passive radar systems STAP Generalized sidelobe canceller Pseudo-norm WRLS
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Retaining local chemical effects:An error cancellation strategy for calculating standard gas-phase enthalpy of formation 认领 引用
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作者 Rui Liu Chaoyang Zhang +2 位作者 Linyuan Wang Zhiyu Huang Jian Liu 《Defence Technology（防务技术）》 SCIE EI CAS CSCD 2026年第1期172-179,共8页
Conventional error cancellation approaches separate molecules into smaller fragments and sum the errors of all fragments to counteract the overall computational error of the parent molecules.However,these approaches m... Conventional error cancellation approaches separate molecules into smaller fragments and sum the errors of all fragments to counteract the overall computational error of the parent molecules.However,these approaches may be ineffective for systems with strong localized chemical effects,as fragmenting specific substructures into simpler chemical bonds can introduce additional errors instead of mitigating them.To address this issue,we propose the Substructure-Preserved Connection-Based Hierarchy(SCBH),a method that automatically identifies and freezes substructures with significant local chemical effects prior to molecular fragmentation.The SCBH is validated by the gas-phase enthalpy of formation calculation of CHNO molecules.Therein,based on the atomization scheme,the reference and test values are derived at the levels of Gaussian-4(G4)and M062X/6-31+G(2df,p),respectively.Compared to commonly used approaches,SCBH reduces the average computational error by half and requires only15%of the computational cost of G4 to achieve comparable accuracy.Since different types of local effect structures have differentiated influences on gas-phase enthalpy of formation,substituents with strong electronic effects should be retained preferentially.SCBH can be readily extended to diverse classes of organic compounds.Its workflow and source code allow flexible customization of molecular moieties,including azide,carboxyl,trinitromethyl,phenyl,and others.This strategy facilitates accurate,rapid,and automated computations and corrections,making it well-suited for high-throughput molecular screening and dataset construction for gas-phase enthalpy of formation. 展开更多
关键词 Gas-phase enthalpy of formation Error cancellation Quantum chemical High throughput
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Study on the aided PC-ASCL decoding algorithm based on optimized parity check codes 认领 引用
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作者 Jianguo YUAN Deyi YANG +1 位作者 Ziliang ZHU Jinneng XIANG 《Optoelectronics Letters》 EI 2026年第2期87-91,共5页
Aiming at the poor performance of the parity check(PC) aided adaptive successive cancellation list(PC-ASCL) decoding algorithm because the PC code in the polar code can only verify odd errors, an optimized parity chec... Aiming at the poor performance of the parity check(PC) aided adaptive successive cancellation list(PC-ASCL) decoding algorithm because the PC code in the polar code can only verify odd errors, an optimized parity check(OPC) code which can verify all odd errors as well as the half even errors is proposed. The OPC code is used to improve the PC-ASCL decoding algorithm, thus an OPC aided ASCL(OPC-ASCL) decoding algorithm is proposed. In the coding stage, the algorithm divides the information sequence into multiple segments, and places an OPC code at the end of each segment to verify the current information sequence, and places a cyclic redundancy check code at the end of the entire information sequence to verify the entire information sequence. In the decoding stage, the algorithm uses the OPC-ASCL decoder to decode. Simulation results show that compared to the PC-ASCL decoding algorithm, the OPC-ASCL decoding algorithm can reduce the complexity and obtain the certain performance gain. 展开更多
关键词 pc ascl decoding pc code adaptive successive cancellation list pc ascl divides information sequence multip parity check polar code optimized parity check coding stage
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Investigation on optical sinc-shaped Nyquist pulse generation based on external modulation 认领 引用
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作者 Jin YUAN Xiuxiu XU 《Optoelectronics Letters》 EI 2026年第2期82-86,共5页
In this paper, a scheme for generating sinc-shaped optical Nyquist pulses based on external modulation is proposed. First, five flat optical frequency comb(OFC) lines are generated by a dual-parallel Mach–Zehnder mod... In this paper, a scheme for generating sinc-shaped optical Nyquist pulses based on external modulation is proposed. First, five flat optical frequency comb(OFC) lines are generated by a dual-parallel Mach–Zehnder modulator(DP-MZM) for optical carrier phase cancellation interference. Then, the phase-locked OFC is split into two paths, one of which is transmitted to a single-drive Mach–Zehnder modulator(SD-MZM) for the modulation of the even-order side-band suppression, and the other is used to remodulate the signal in order to obtain equally spaced comb lines. Eventually, equal frequency spaced phase-locked 15-line OFCs are generated and extremely narrow over-zero width Nyquist pulses are realized at 2.5 GHz, 5 GHz, 10 GHz and 20 GHz. The root-mean-square error(RMSE) is calculated for the generated Nyquist pulses which enables the verification of the signal quality. 展开更多
关键词 remodulate s dual parallel Mach Zehnder modulator phase locked optical frequency comb external modulation optical carrier phase cancellation interference flat optical frequency single drive Mach Zehnder modulator optical sinc shaped Nyquist pulses
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X-Type Antiferromagnetic Stacking:Defying Magnonic Arithmetic 认领 引用
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作者 Tao Yu 《Chinese Physics Letters》 SCIE EI CAS CSCD 2026年第1期211-212,共2页
In physics,our expectations for system behavior are often guided by intuitive arithmetic.For systems composed of identical units,we anticipate synergy of the contributions from these units,where 1+1=2.Conversely,for s... In physics,our expectations for system behavior are often guided by intuitive arithmetic.For systems composed of identical units,we anticipate synergy of the contributions from these units,where 1+1=2.Conversely,for systems built from opposing units,we expect cancellation of their contributions,where 1-1=0.This intuitive arithmetic has long underpinned our understanding of physical properties of materials,from electronic transport to optical responses.However,scientific breakthroughs often occur when nature reveals ways to circumvent these seemingly fundamental rules,opening new possibilities that challenge our deepest assumptions about material behavior. 展开更多
关键词 intuitive arithmetic cancellation their contributionswhere understanding physical properties materialsfrom antiferromagnetic stacking synergy contributions unitswhere electronic transport magnons material behavior
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Robust generalized sidelobe canceller based on eigenanalysis and a MaxSINR beamformer 认领 引用 被引量：2
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作者 Quan-dong WANG Liang-hao GUO +2 位作者 Wei-yu ZHANG Sui-ling REN Chao YAN 《Frontiers of Information Technology & Electronic Engineering》 SCIE EI CSCD 2019年第7期975-988,共14页
A robust generalized sidelobe canceller is proposed to combat direction of arrival(DOA)mismatches.To estimate the interference-plus-noise(IPN)statistics characteristics,conventional signal of interest(SOI)extraction m... A robust generalized sidelobe canceller is proposed to combat direction of arrival(DOA)mismatches.To estimate the interference-plus-noise(IPN)statistics characteristics,conventional signal of interest(SOI)extraction methods usually collect a large number of segments where only the IPN signal is active.To avoid that collection procedure,we redesign the blocking matrix structure using an eigenanalysis method to reconstruct the IPN covariance matrix from the samples.Additionally,a modified eigenanalysis reconstruction method based on the rank-one matrix assumption is proposed to achieve a higher reconstruction accuracy.The blocking matrix is obtained by incorporating the effective reconstruction into the maximum signal-to-interferenceplus-noise ratio(MaxSINR)beamformer.It can minimize the influence of signal leakage and maximize the IPN power for further noise and interference suppression.Numerical results show that the two proposed methods achieve considerable improvements in terms of the output waveform SINR and correlation coefficients with the desired signal in the presence of a DOA mismatch and a limited number of snapshots.Compared to the first proposed method,the modified one can reduce the signal distortion even further. 展开更多
关键词 Eigenanalysis Interference-plus-noise covariance matrix reconstruction Maximum signal-to-interference-plus-noise ratio criterion Blocking matrix Generalized sidelobe canceller Direction of arrival mismatch
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A high-gain optical injection amplification system for coherent fiber links 认领 引用
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作者 Ru Yuan Xiang Zhang +10 位作者 Qian Zhou Qi Zang Lin-Bo Zhang Yi-Ting Liu Dan Wang Jie Liu Yu-Can Zhang Yu-Fang Lei Tao Liu Rui-Fang Dong Shou-Gang Zhang 《Chinese Physics B》 SCIE EI CAS CSCD 2026年第4期459-466,共8页
We design a high-gain optical amplification system based on optical injection locking(OIL)technology,which has an all-fiber structure and is ideally suited for fiber-based optical frequency transfer system.The paper i... We design a high-gain optical amplification system based on optical injection locking(OIL)technology,which has an all-fiber structure and is ideally suited for fiber-based optical frequency transfer system.The paper investigates the relationship between amplification gain and frequency detuning under different injection linewidths,showing that smaller injection linewidths result in higher gains for the same frequency detuning.Preliminary experiments show that with a 5 Hz injection linewidth and sufficiently small frequency detuning,an amplification gain exceeding 60 dB can be achieved.In contrast to previous approaches,we introduce an out-of-loop optical path with an acousto-optic modulator to counteract the additional phase noise introduced by the asymmetric optical paths,achieving a higher-performance optical injection amplification system.After effective phase noise suppression,the noise floor of 1m coherent fiber link constructed based on the optical amplification system achieves a fractional frequency instability floor of 1.6×10-20at an integration time of 10000 s.Based on this high-performance system,a long-distance coherent transmission experiment over a 200 km spooled fiber link was demonstrated,which showed a fractional frequency instability of 3.4×10-15at 1 s,scaling down to 3.4×10-20at 10000 s in terms of modified Allan deviation(Mod-ADEV).This work presents a high-gain optical amplification method for transferring ultra-stable optical frequency standards,reducing the number of repeaters and amplifiers in optical frequency transfer,and simplifying the system complexity. 展开更多
关键词 optical injection amplifier optical frequency transfer coherent fiber link phase noise cancellation
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Same-day surgical cancellations in pediatric urology:identifying trends for quality improvement 认领 引用
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作者 Tyler Overholt Daniel David Thole +3 位作者 Randy Casals Anthony Atala Steve Hodges Marc Colaco 《The Canadian Journal of Urology》 SCIE 2026年第3期693-698,共6页
Objectives:Day of surgery cancellations present several workflow challenges that result in delay of care for patients and revenue loss for physicians.This study aimed to further understand same-day pediatric urology s... Objectives:Day of surgery cancellations present several workflow challenges that result in delay of care for patients and revenue loss for physicians.This study aimed to further understand same-day pediatric urology surgical cancellations,and the authors assessed identifiable trends for quality improvement over a one-year time period.Methods:Same-day surgical cancellations were prospectively identified at a single tertiary care center,Atrium Health Wake Forest Baptist,from 01 October 2022 to 30 September 2023.Reasons for cancellation were recorded per the parent/legal guardian and categorized as an avoidable or unavoidable cause.Demographic data,surgical rescheduling,and lost operating room time were also recorded.Descriptive and bivariate analyses were performed as indicated.Results:Of 2351 scheduled cases,51(2.2%)were cancelled the day of surgery.The most common cancellation type was a complete no-show with no reason provided from the family(39.2%).Of those with reported reasons,54.8%were cancelled for avoidable causes.Of those cancelled,66.7%were for patients of a minority race,with 11.8%of families indicating a need for translation services during visits.There was no difference in terms of race/ethnicity,distance lived from the hospital,or surgical type when comparing cancellation reason(p>0.05).Only 51.0%of cases were rescheduled with a median delay of 38 days.A total of 59.3 h of operating room time was lost due to these cancellations.Conclusions:Same-day cancellations were identified in 2.2%of planned pediatric urology cases over a oneyear period,with the majority of patients cancelled for avoidable reasons.Of cancelled cases,only 51.0%were rescheduled by the family,with a median delay of over one month.Additionally,2/3rd of patients identified as a minority race,with 11.8%requiring translation services.This represents a vulnerable population who may require additional counseling for optimal patient and provider outcomes. 展开更多
关键词 surgery same-day cancellation quality improvement pediatric patient outcomes operating time
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Mitigating Sidelobe-Driven Attacks in OFDM-Based Cognitive Radio Networks 认领 引用
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作者 Bakhtawar Gul Atif Elahi +3 位作者 Tahir Saleem Noor Gul Fahad Algarni Insaf Ullah 《Computers, Materials & Continua》 SCIE EI 2026年第5期1986-2004,共19页
Orthogonal Frequency Division Multiplexing(OFDM)enables efficient Dynamic Spectrum Access(DSA)but suffers from high sidelobe that causes excessive out-of-band(OOB)emissions and expose the system to spectrum-layer cybe... Orthogonal Frequency Division Multiplexing(OFDM)enables efficient Dynamic Spectrum Access(DSA)but suffers from high sidelobe that causes excessive out-of-band(OOB)emissions and expose the system to spectrum-layer cyberattacks such as man-in-the-middle(MITM),eavesdropping,and primary user emulation(PUE)attacks.To address both spectral leakage and its security implications,this paper introduces a secure and intelligent hybrid optimization strategy that combinesan Eigenspace-based Generalized Sidelobe Canceller(ES-GSC)with a Genetic Algorithm(GA),to derive optimally weighted cancellation carriers.The proposed method jointly suppresses sidelobes and reinforces resistance to leakage-based attacks.MATLAB Simulation demonstrate considerable reductions in OOB emissions and higher resilience against spectrum-layer threats compared with existing techniques. 展开更多
关键词 Cybersecurity cognitive radios network generalized sidelobe canceler orthogonal frequency division multiplexing primary user emulation attack sidelobe suppression
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Γ0(2)MODULAR FORMS AND ANOMALY CANCELLATION FORMULAS 认领 引用
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作者 Siyao LIU Yong WANG 《Acta Mathematica Scientia》 SCIE CSCD 2026年第1期119-130,共12页
In the references[4,11,12],the authors gave some modular forms overΓ0(2).In this note,we proceed with the study of cancellation formulas relating to the modular forms.
关键词 modular invariance cancellation formulas (a,b)type cancellation formulas
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Implementation of a LD-CELP Codec with Echo Canceller Functions 认领 引用
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作者 TianWenshun NiWeizhen 《The Journal of China Universities of Posts and Telecommunications》 1995年第2期18-23,共6页
In this paper, the authors present a method to handle the Echo Canceller as an on-side job of LD-CELP codec and a circuitry to embed echo canceller into a LD-CELP codec. The Possibility to implement a system with the ... In this paper, the authors present a method to handle the Echo Canceller as an on-side job of LD-CELP codec and a circuitry to embed echo canceller into a LD-CELP codec. The Possibility to implement a system with the integration of LD-CELP codec and echo canceller in real time by two chips of TMS320C30 isdiscussed. 展开更多
关键词 speech coding echo canceller signal processing
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A parameter estimator based on adaptive noise canceller 认领 引用
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作者 LIANG Guolong and HUI Junying 《Chinese Journal of Acoustics》 1996年第1期21-28,共8页
The application of an adaptive noise canceller to parameter estimation is restricted for its unsatisfactory performance in the condition of high SNR input. In this paper based on an adaptive noise canceller, is presen... The application of an adaptive noise canceller to parameter estimation is restricted for its unsatisfactory performance in the condition of high SNR input. In this paper based on an adaptive noise canceller, is presented a parameter estAnating method, which shows ulce filtering function and good tracking ability with ullknown prior information of interference and motion model of the object. The presented estimator only needs that the interference lloise varies faster than the parameter to be estimated. The presented method as a beedng esthaator was used to process the data collected in a sea experiment and the results show exciting property. 展开更多
关键词 Adaptive noise canceller Parameter estimator Adaptive filtering
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Integrated Sensing and Communication Enabled Sensing Base Station:System Design,Beamforming,Interference Cancellation and Performance Analysis 认领 引用 被引量：2
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作者 Jiang Wangjun Wei Zhiqing +1 位作者 Feng Zhiyong Chen Xu 《China Communications》 SCIE EI CSCD 2025年第1期111-127,共17页
This paper studies the sensing base station(SBS)that has great potential to improve the safety of vehicles and pedestrians on roads.SBS can detect the targets on the road with communication signals using the integrate... This paper studies the sensing base station(SBS)that has great potential to improve the safety of vehicles and pedestrians on roads.SBS can detect the targets on the road with communication signals using the integrated sensing and communication(ISAC)technique.Compared with vehicle-mounted radar,SBS has a better sensing field due to its higher deployment position,which can help solve the problem of sensing blind areas.In this paper,key technologies of SBS are studied,including the beamforming algorithm,beam scanning scheme,and interference cancellation algorithm.To transmit and receive ISAC signals simultaneously,a double-coupling antenna array is applied.The free detection beam and directional communication beam are proposed for joint communication and sensing to meet the requirements of beamwidth and pointing directions.The joint timespace-frequency domain division multiple access algorithm is proposed to cancel the interference of SBS,including multiuser interference and duplex interference between sensing and communication.Finally,the sensing and communication performance of SBS under the industrial scientific medical power limitation is analyzed and simulated.Simulation results show that the communication rate of SBS can reach over 100 Mbps and the range of sensing and communication can reach about 500 m. 展开更多
关键词 beamforming integrated sensing and communication(ISAC) interference cancellation performance analysis sensing base station
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