Computer Science ›› 2014, Vol. 41 ›› Issue (Z11): 168-169.

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MIMO Broadcast Transmission Scheme Based on BD Precoding and TDM

CHEN Pei-lei and LIU Ping   

  • Online:2018-11-14 Published:2018-11-14

Abstract: In MIMO(Multi-Input Multi-Output)system,the block diagonalization(BD) precoding algorithm is applied to eliminate the co-channel interference(CCI).And BD precoding algorithm requires the number of the system receiving antennas should be less than the number of all users transmitting antennas.With the increasing of system users,the amount of the receiving antennas add,and the complexity of BD algorithm increases sharply.In order to solve the above problem and maximize users capacity supported by the system,this paper presented an transmission scheme based on block diagonalization precoding and time division multiplexing(TDM).In this scheme,the users are divided into several groups which will be assigned to different slots.The scheme reduces the requirements on the number of system transmitting antennas and the complexity of the algorithm.Simulation results show that the scheme can support more users and increase the throughput of the system.

Key words: Block diagonalization(BD),Precoding,MIMO,Time division multiplexing,Throughput

[1] Telatar I E.Capacity of Multi-Antenna Gaussian Channels[J].European Transactions on Telecommunications,1999,0(6):585-595
[2] Gesbert D,Shafi M,Shiu D S,et al.From theory to practice:an overview of MIMO space-time coded wireless systems[J].IEEE J.on Selected Areas in Commun.,2003,1(4):281-302
[3] Jafar S A,Vishwanash S,Goldsmith A J.Channel Capacity and Beamforming for Multiple Transmit and Receive Antennas with Covariance Feedback[C]∥IEEE Intemational Conference on Communications.2001,7:2266-2270
[4] Chen R,Andrews J G,Heath R W.Multi-user space-time block coded MIMO system with Downlink Precoding[C]∥IEEE International Conference on Communications.2004:2689-2693
[5] Jongrem G,Skoglund M,Ottersten B.Combining eamformingand orthogonal space-time block coding[J].IEEE Trans.Info.Theory,2002,8:611-627
[6] Wong K K,Murch R D,Letaief K B.A joint-channel diagonalization for multiuser MIMO antenna systems[J].IEEE Trans.Wireless Commun.,2003,2(4):773-786
[7] Costa M.Writing on Dirty Paper[J].IEEE Trans.Info.Theory,1983,29:439-441
[8] Caire G,Shamai S.On the Achievable Throughput of a Multi-Antenna Gaussian Broadcast Channel[J].IEEE Trans.Info.Theory,2003,9:1691-1706
[9] Weingarten H,Steinberg Y,Shamai S.The capacity region ofthe Gaussian MIMO broadcast channel[J].IEEE Trans.Info.Theory,2004:174
[10] Lai U C,Murch R D.A transmit preprocessing technique formultiuser MIMO systems using a decomposition apporach[J].IEEE Trans.Wireless Commun.,2004,3(1):20-24
[11] Serbetli S,Yener A.Beamforming and Scheduling Strategies for Time Soltted Multimuser MIMO System[J].IEEE Signals,Systems and Computers,2004:1227-1231
[12] Spencer Q H,Swindlehurst A L,Hartin M.Zero-Forcing Methods for Downlink Spatial Multiplexing in Multiuser MIMO Channels[J].IEEE Transactions on Signal,2004,2(2):461-471

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