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Joint user association and cooperative beamforming for multi-IRSs aided mmWave communication systems 认领 引用
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作者 Qing Xue Jiajun Mu +2 位作者 Fengsheng Wei Meng Hua Qianbin Chen 《Digital Communications and Networks》 SCIE EI CSCD 2026年第2期252-261,共10页
This paper investigates a downlink millimeter-Wave(mmWave)communication system equipped with multiple cooperative Intelligent Reflecting Surfaces(IRSs),aiming to extend mmWave signal coverage and maximize system throu... This paper investigates a downlink millimeter-Wave(mmWave)communication system equipped with multiple cooperative Intelligent Reflecting Surfaces(IRSs),aiming to extend mmWave signal coverage and maximize system throughput.To fully exploit the potential of IRSs within a user-centric framework,this study delves into the joint optimization problem of user multiple association,transmit beamforming,and cooperative passive beamforming.Meanwhile,the impact of IRS locations on user association is analyzed.Given the non-convexity and complexity of the joint optimization problem,a low-complexity optimization algorithm is designed.The algorithm integrates iterative optimization,Lagrangian dual decomposition,and Fractional Programming(FP)techniques.Specifically,the user association problem is optimized using the Lagrangian dual decomposition method,while the joint beamforming is solved via the FP method.Simulation results demonstrate that,compared to traditional methods,the proposed algorithm significantly improves the system sum rate,validating its effectiveness and superiority. 展开更多
关键词 Intelligent re-ecting surface Millimeter wave communication User association Beamforming
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