In order to improve the performance of multiuser multi input multi output (MU-MIMO) system and reduce the computational complexity of precoding algorithm,a hybrid precoding algorithm based on sum-rate maximization is proposed.First,by maximizing the spectral efficiency,the Singular Value Decomposition (SVD) method is used to solve the initial radio frequency (RF) precoding matrix.Then,considering the inter-user interference,the initial RF precoding matrix and the digital precoding matrix are iteratively updated by optimizing the system sum-rate to achieve the final hybrid precoding algorithm.The simulation results show that the algorithm proposed can reduce the interference between users,the noise in channel,and have higher system sum-rate with better system spectrum efficiency,while the computational complexity is reduced.
Key words
Millimeter wave /
Multiuser /
Sum-rate maximization /
Hybrid precoding
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References
[1] 李元稳,何世文,李春国,等.多用户毫米波MIMO系统中基于信道互易性的混合模数预编码算法[J].信号处理,2016,32(8):922-930.
[2] 杨绿溪,何世文,王毅,等.面向5G无线通信系统的关键技术综述[J].数据采集与处理,2015,30(3):469-485.
[3] 欧飞飞,何世文,薛春林,等.毫米波分离型子阵列的低复杂度混合波束成型传输设计[J].信号处理,2016,32(9):1039-1047.
[4] D.Lopez-Perez,I.Guvenc,G.De La Roche,et al.Enhanced intercell interference coordination challenges in heterogeneous networks[J].IEEE Wireless Communications,2011,18(3):22-30.
[5] S.W.Peters,R.W.Heath.Cooperative algorithms for MIMO interference channels[J].IEEE Transactions on Vehicular Technology,2011,60(1):206-218.
[6] O.E.Ayach,S.Rajagopal,S.Abu-Surra,et al.Spatially sparse precoding in millimeter wave MIMO systems[J].IEEE Transactions on Wireless Communications,2014,13(3):1499-1513.
[7] A.Alkhateeb,G.Leus,R.W.Heath.Limited feedback hybrid precoding for multi-user millimeter wave systems[J].IEEE Transactions on Wireless Communications,2015,14(11):6481-6494.
[8] 孙增友,刘玲玉,张洋.基于SLNR-MMSE的协作多点通信系统预编码算法的研究[J].东北电力大学学报,2016,36(2):81-85.
[9] 陈鹏,缪小龙,何世文,等.超高速毫米波无线局域网通信系统性能分析[J].信号处理,2015,31(1):66-72.
[10] H.Shen,B.Li,M.Tao,et al.MSE-based transceiver designs for the MIMO interference channel[J].IEEE Transactions on Wireless Communications,2010,9(11):3480-3489.
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