Adaptive compensation of analog front-end I/Q mismatches in digital receivers
Adaptive compensation of analog front-end I/Q mismatches in digital receivers
复制标题
数字接收器中模拟前端 I/Q 失配的自适应补偿
DOI：
10.1109/iscas.2001.922250
复制
发表时间：
2001
期刊：
影响因子：
--
通讯作者：
R. Morling
中科院分区：
文献类型：
--
作者：
E. Çetin;I. Kale;R. Morling
在通信接收机的设计中，I和Q通道的相位和增益失配是非常重要的。本文分析了I和Q通道失配的影响，并提出了一种低复杂度的盲自适应算法来最小化这个问题。所提出的解决方案由两个2抽头自适应滤波器组成，它们排列在自适应噪声抵消器(ANC)结构中，其中一个的输出交叉馈送到另一个的输入。该系统用作消除I和Q失配误差的去相关器。
I and Q channel phase and gain mismatches are of great concern in communications receiver design. In this paper we analyse the effects of I and Q channel mismatches and propose a low-complexity blind adaptive algorithm to minimize this problem. The proposed solution consists of two, 2-tap adaptive filters, arranged in Adaptive Noise Canceller (ANC) set-up, with the output of one cross-fed to the input of the other. The system works as a de-correlator eliminating I and Q mismatch errors.