零中频接收机直流偏置消除分析

9th Asia-Pacific Conference on Communications (IEEE Cat. No.03EX732) Pub Date : 2003-09-21 DOI:10.1109/APCC.2003.1274443

C.D. Lee

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引用次数: 3

摘要

零中频接收机面临的最严重的问题是直流偏置。直流偏置是由本振(LO)漏入下变频器输入引起的。由于直流偏置，接收机性能显著降低。本文对两种消除这种残余直流偏置的数字信号处理(DSP)算法进行了说明、分析、仿真和比较。在分析中，导出了两种直流估计器的稳定时间、最大波动和方差。

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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DC offset elimination analysis in zero-IF receiver

The most serious problem faced in zero-intermediate frequency (IF) receiver is DC-offset. DC-offset is caused by leakage of the local oscillator (LO) into the down converter input. The receiver performance is significantly degraded due to DC-offset. This paper illustrate, analyze, simulate and compare two digital signal processing (DSP) algorithms which remove this residual DC-offset. In the analysis, the settling time, maximum fluctuation and variance of the two DC estimators were derived.

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来源期刊

9th Asia-Pacific Conference on Communications (IEEE Cat. No.03EX732)

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