An Improved Approach of Reducing Feedback for Precoded MIMO-OFDM System

Author

Fang, Xiaoyin ; Wu, Gang ; Huang, Haiyang ; Lei, Xia ; Li, Shaoqian

Author_Institution

Univ. of Electron. Sci. & Technol. of China, Chengdu

Volume

2

fYear

2007

fDate

6-8 Dec. 2007

Firstpage

181

Lastpage

185

Abstract

In this paper, we investigated the usage of the subspace tracking for precoded multiple-input multiple-output (MIMO-OFDM) systems with limited- rate feedback, which exploits the frequency correlation between adjacent subcarriers, and proposed a novel approach of generating preceding codebook for this method, which is derived from the analysis of tracking and preceding codebook generation method. The numerical simulation shows the proposed approach achieves about 1.3 dB gain than the tracking approach, which uses the original codebook when bit error rate (BER) is 10^-3, with the same computation complexity and overheads.

Keywords

MIMO communication; OFDM modulation; error statistics; numerical analysis; precoding; BER; bit error rate; codebook generation method; computation complexity; frequency correlation; multiple input multiple output systems; numerical simulation; orthogonal frequency division multiplexing; precoded MIMO OFDM system; Bit error rate; Channel state information; Fading; Feedback; Gain; MIMO; Numerical simulation; OFDM; Power system reliability; Wireless communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Future Generation Communication and Networking (FGCN 2007)

Conference_Location

Jeju

Print_ISBN

0-7695-3048-6

Type

conf

DOI

10.1109/FGCN.2007.64

Filename

4426228