Adaptive MIMO systems in 2x2 uncorrelated Rayleigh fading channel

被引：0
作者：
Huang, Jinliang [1 ]
Signell, Svante [1 ]
机构：
[1] Royal Inst Technol KTH, Sch Informat & Commun Technol, Stockholm, Sweden
来源：
2007 IEEE WIRELESS COMMUNICATIONS & NETWORKING CONFERENCE, VOLS 1-9 | 2007年
关键词：
adaptive modulation; MIMO; BF; SVD; STBC; ZF;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Adaptive MQAM modulation is used to maximize spectral efficiency while keeping bit error rate (BER) under a target level. The closed-form expressions of the average spectral efficiency of adaptive modulation system are derived for beamforming (BF), singular value decomposition (SVD), Space-Time Block Coding (STBC) and spatial multiplexing with zero-forcing (ZF) receiver in uncorrelated flat Rayleigh fading channel. Further, a low-complexity adaptive scheme that switches across BF and SVD in closed loop systems, STBC and ZF in open loop systems is suggested to enhance the spectral efficiency on the basis of the closed form expressions.
引用
收藏
页码：1115 / 1119
页数：5
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