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Design of Serially Concatenated Two-Level Polar Coded Modulation System with Low-Complexity 认领 引用
1
作者 Zhou Lin Liao Guojun +3 位作者 Xu Lei An Ran Xie Xianzhong Wang Xi 《China Communications》 SCIE EI CSCD 2025年第1期102-110,共9页
Multilevel coding(MLC)is a commonly used polar coded modulation scheme,but challenging to implement in engineering due to its high complexity and long decoding delay for high-order modulations.To address these limitat... Multilevel coding(MLC)is a commonly used polar coded modulation scheme,but challenging to implement in engineering due to its high complexity and long decoding delay for high-order modulations.To address these limitations,a novel two-level serially concatenated MLC scheme,in which the bitlevels with similar reliability are bundled and transmitted together,is proposed.The proposed scheme hierarchically protects the two bit-level sets:the bitlevel sets at the higher level are sufficiently reliable and do not require excessive resources for protection,whereas only the bit-level sets at the lower level are encoded by polar codes.The proposed scheme has the advantages of low power consumption,low delay and high reliability.Moreover,an optimized constellation signal labeling rule that can enhance the performance is proposed.Finally,the superiority of the proposed scheme is validated through the theoretical analysis and simulation results.Compared with the bit interleaving coding modulation(BICM)scheme,under 256-quadrature amplitude modulation(QAM),the proposed scheme attains a performance gain of 1.0 dB while reducing the decoding complexity by 54.55%. 展开更多
关键词 bit-interleaved coded modulation high-order modulation multilevel coding polar codes
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Multilevel photon communication on BPPM with convolutional coding 认领 引用 被引量：1
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作者 K.Sripimanwat J.Wongpoom O.Sangaroon 《Chinese Optics Letters》 SCIE EI CAS CSCD 2013年第10期18-22,共5页
Multilevel photon combined with binary pulse position modulation(BPPM)(Manchester pulsed signals), is introduced in this letter. Initially, error probability derivation and explanation for four-level photon communicat... Multilevel photon combined with binary pulse position modulation(BPPM)(Manchester pulsed signals), is introduced in this letter. Initially, error probability derivation and explanation for four-level photon communications with that BPPM is presented. Next, the 2-level photon communications matching with BPPM is proposed. For performance comparison, it is done with that the conventional scheme by fxing the background noise and also increasing number of photon per slot. Successfully with applying convolutional coding for system improving, the proposed multilevel photon on BPPM with this coding scheme achieves higher gain. Finally, this work also benefts to improving for further performance when considering with multilevel error control coding as well. 展开更多
关键词 BPPM Multilevel photon communication on BPPM with convolutional coding
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Two-Level Unequal Error Protection Scheme in Image Transmission System Using Multilevel Codes in Rayleigh Fading Channel 认领 引用
3
作者 LI Zuo-wei YANG Yixian +1 位作者 YUAN Dongfeng HU Zheng-ming 《The Journal of China Universities of Posts and Telecommunications》 2004年第Z1期55-61,共7页
In this paper,we propose a novel Unequal Error Protection(UEP)scheme with two levels for image transmission using Multilevel Codes(MLC).By providing the best protection for the most important data,the final recovered ... In this paper,we propose a novel Unequal Error Protection(UEP)scheme with two levels for image transmission using Multilevel Codes(MLC).By providing the best protection for the most important data,the final recovered image quality is remarkably improved both in visual effect and in Peak Signal to Noise power Ratio(PSNR)performance. 展开更多
关键词 rayleigh fading channel image transmission inequal error protection multilevel coding
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