I/Q不平衡对QPSK信号检测的影响
首发时间:2011-05-20
摘要:本文主要是研究同相与正交(I/Q)支路幅度和相位不平衡对PSK系统数字接收机接收性能的影响。无论是幅度不平衡还是相位不平衡都会引入码间干扰。当幅度不平衡和相位不平衡同时存在时,I路信号和Q路信号就会产生I/Q转换。为了证明I/Q imbalance的影响,本文还计算了QPSK信号的BER特性。
关键词: I/Q imbalance SICI BER
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Impacts of I/Q Imbalance on QPSK signal detection
Abstract:This paper is to study the impacts of the I/Q imbalance in the quadrature down-converter on the performance of a PSK systems.Either amplitude or phase imbalance introduces inter-channel interference(ICI),there is a cross-talk between in-phase and quarature channels.The BER perforance of QPSK sub-carriers are also calculated to illustrate the impacts of the I/Q imbalance.
Keywords: I/Q imbalance SICI BER
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No.4426928545520130****
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