OFDM SDMA系统的非线性预失真

2006 IEEE 7th Workshop on Signal Processing Advances in Wireless Communications Pub Date : 2006-07-02 DOI:10.1109/SPAWC.2006.346386

R. Habendorf, G. Fettweis

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引用次数: 3

摘要

研究了OFDM系统从多天线发射机到非合作单天线移动站下行链路的非线性预失真技术。虽然像Tomlinson Harashima预编码(THP)这样的非线性预失真方案的性能强烈依赖于预编码符号的顺序，但目前的THP方法采用数据独立的排序算法。提出了一种结合矩阵分解和预编码器反馈结构的树搜索算法来计算与数据相关的预编码顺序

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Nonlinear Predistortion for OFDM SDMA Systems

This paper investigates nonlinear predistortion techniques for the downlink of OFDM systems from a transmitter equipped with multiple antennas to non-cooperative single antenna mobile stations. Although the performance of nonlinear predistortion schemes like Tomlinson Harashima precoding (THP) strongly depends on the ordering of the precoded symbols, current THP approaches apply data independent sorting algorithms. A tree search algorithm is proposed which combines matrix decomposition and the feedback structure of the precoder to compute a data dependent precoding order

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2006 IEEE 7th Workshop on Signal Processing Advances in Wireless Communications

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