基于CMA的OFDM系统盲频依赖IQ不平衡补偿方案

2011 IEEE 22nd International Symposium on Personal, Indoor and Mobile Radio Communications Pub Date : 2011-09-01 DOI:10.1109/PIMRC.2011.6140626

M. Matsui, T. Nakagawa, R. Kudo, K. Ishihara, M. Mizoguchi

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引用次数: 8

摘要

频率相关的IQ不平衡将成为未来宽带无线通信系统的降级因素之一。针对宽带OFDM收发器中出现的频率选择性IQ不平衡问题，提出了一种盲补偿方案。该方案采用双抽头滤波器，其权重由常模算法计算，不需要任何训练或导频信号。通过计算机仿真验证了该方案能够补偿OFDM收发器中频率相关的IQ不平衡。我们还展示了一些实验结果，其中我们提出的方案补偿了6 GHz以上的频率相关IQ不平衡。

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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Blind frequency-dependent IQ imbalance compensation scheme using CMA for OFDM system

Frequency-dependent IQ imbalance will be one of the degrading factors for future wideband wireless communication systems. This paper presents a blind compensation scheme for the frequency-selective IQ imbalance that occurs in wideband OFDM transceivers. The proposed scheme uses 2-tap filters having weights calculated by a constant modulus algorithm, which does not require any training or pilot signals. We verified by computer simulation that our proposed scheme compensates for frequency-dependent IQ imbalance in OFDM transceivers. We also show some experimental results, in which a frequency-dependent IQ imbalance over 6 GHz is compensated for by our proposed scheme.

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2011 IEEE 22nd International Symposium on Personal, Indoor and Mobile Radio Communications

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