Adaptive Modulation and Beam-forming for OFDM MIMO Systems with Rate-limited Feedback

被引：0
|
作者：
Deb, Debasish [1 ]
机构：
[1] Elect & Radar Dev Estab, Bangalore, Karnataka, India
来源：
IETE JOURNAL OF RESEARCH | 2010年 / 56卷 / 03期
关键词：
Beam-forming; OFDM; MIMO;
D O I：
10.4103/0377-2063.67102
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：
In this paper, an adaptive modulation and beam-forming strategy for orthogonal frequency division multiplexing (OFDM) multiple-input multiple-output (MIMO) systems with rate-limited feedback is presented. It utilizes the correlation between OFDM subcarriers to reduce the amount of feedback of channel states from a receiver to a transmitter. An expression for the correlation coefficient between the squared gains of channel taps of the OFDM subcarrier for a Rayleigh fading channel with uniform and exponential multipath profile is derived. The performance of the proposed feedback strategy is compared with the one proposed.
引用
收藏
页码：175 / 178
页数：4
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