使用变换域预测的TDD系统信道互易性补偿方法

doi:10.3969/j.issn.1001-2400.2012.06.004

J4 ›› 2012, Vol. 39 ›› Issue (6): 22-25+41.doi: 10.3969/j.issn.1001-2400.2012.06.004

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Compensation for channel non-reciprocity by using transform-domain prediction in TDD-MIMO-OFDM systems

SUN Dechun;LIU Zujun;YI Kechu

(State Key Lab. of Integrated Service Networks, Xidian Univ., Xi'an 710071， China)

Received:2011-08-23 Online:2012-12-20 Published:2013-01-17
Contact: SUN Dechun E-mail:dcsun@mail.xidian.edu.cn

Abstract

Abstract:

The bad effect of channel non-reciprocity caused by time-variations on the capacity of TDD-MIMO-OFDM systems is analyzed and a compensation method based on transform-domain prediction is proposed. Based on minimum description length(MDL) criteria, the proposed method detects the transform-domain components, and then prediction is made for each component to compensate for channel time-variances. By transform domain processing, the proposed method effectively reduces the estimation and prediction error, and hence remedies the system capacity.

Key words: MIMO-OFDM, channel reciprocity, channel prediction, system capacity

CLC Number:

TN929.5

SUN Dechun;LIU Zujun;YI Kechu. Compensation for channel non-reciprocity by using transform-domain prediction in TDD-MIMO-OFDM systems[J].J4, 2012, 39(6): 22-25+41.

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Compensation for channel non-reciprocity by using transform-domain prediction in TDD-MIMO-OFDM systems

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