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

使用变换域预测的TDD系统信道互易性补偿方法

孙德春;刘祖军;易克初

(西安电子科技大学综合业务网理论及关键技术国家重点实验室，陕西西安 710071)

收稿日期:2011-08-23 出版日期:2012-12-20 发布日期:2013-01-17
作者简介:孙德春(1982-)，男，讲师，西安电子科技大学博士研究生，E-mail: dcsun@mail.xidian.edu.cn．
基金资助:
国家自然科学基金资助项目(61101146)；基本科研业务费资助项目(K5051201024)；高等学校学科创新引智计划资助项目(B08038)

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

摘要/Abstract

摘要：

分析了信道时变对TDD-MIMO-OFDM系统容量的影响，提出了一种基于变换域预测的TDD-MIMO-OFDM系统信道互易性补偿方法．该方法基于最小描述长度准则(MDL)对变换域分量进行检测，并对这些分量进行预测以补偿信道时变．通过变换域处理，该方法有效地降低了信道估计和预测误差，弥补了由时变引起的信道非互易性带来的系统容量损失．

关键词: TDD-MIMO-OFDM, 信道互易性, 信道预测, 系统容量

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

中图分类号:

TN929.5

孙德春;刘祖军;易克初. 使用变换域预测的TDD系统信道互易性补偿方法[J]. J4, 2012, 39(6): 22-25+41.

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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使用变换域预测的TDD系统信道互易性补偿方法

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

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