发射机和接收机IQ不平衡的OFDM系统

International Workshop on Signal Processing Advances in Wireless Communications Pub Date : 2005-06-05 DOI:10.1109/SPAWC.2005.1506237

A. Tarighat, A. H. Sayed

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引用次数: 3

摘要

基于ofdm的系统在前端模拟处理中存在同相和正交相(IQ)不平衡等缺陷。这种不平衡是由射频(RF)信号的模拟处理引起的，并且可以出现在发射器和接收器上。由此产生的IQ失真限制了接收机可实现的操作信噪比和可实现的数据速率。本文研究了发送端和接收端IQ不平衡对OFDM系统的影响，并提出了相应的补偿算法。

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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OFDM systems with both transmitter and receiver IQ imbalances

The implementation of OFDM-based systems suffers from impairments such as in-phase and quadrature-phase (IQ) imbalances in the front-end analog processing. Such imbalances are caused by the analog processing of the radio frequency (RF) signal and can be present at both the transmitter and receiver. The resulting IQ distortion limits the achievable operating SNR at the receiver and the achievable data rates. In this paper, the effect of both the transmitter and receiver IQ imbalances in an OFDM system is studied and algorithms are developed to compensate for such distortions.

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International Workshop on Signal Processing Advances in Wireless Communications

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