功率放大器非线性存在下SDMA-OFDM系统的误码率分析

2006 IEEE 7th Workshop on Signal Processing Advances in Wireless Communications Pub Date : 2006-07-02 DOI:10.1109/SPAWC.2006.346412

F. Gregorio, S. Werner, J. Cousseau, T. Laakso

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引用次数: 0

摘要

将OFDM扩展到空分多址(SDMA)等多用户结构有助于提高频谱效率和系统容量。然而，由于功率放大器的峰值平均功率比(PAPR)很高，功率放大器的非线性严重降低了性能，这是多载波系统的一个典型特征。本文推导了受功率放大器非线性影响的SDMA-OFDM系统误码率性能的理论上限。仿真结果与理论结果吻合较好。研究了误码率性能随功率放大器效率的变化规律

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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BER Analysis of SDMA-OFDM Systems in the Presence of Power Amplifier Nonlinearities

The extension of OFDM to multiuser structures like space division multiple access (SDMA) helps to increase the spectral efficiency and system capacity. However, power amplifier nonlinearities reduce severely the performance due to the high peak to average power ratio (PAPR) that is a typical characteristic of multicarrier systems. This paper derives a theoretical upper bound on the bit error rate performance of a SDMA-OFDM system subject to power amplifier nonlinearities. Simulations show good agreement with theoretical results. The BER performance as a function of power amplifier efficiency is also studied

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

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