A Two-Stage Approach to Harmonic Rejection Mixing Using Blind Interference Cancellation

被引：16

作者：

Moseley, N. A. ^{[1
]}

Klumperink, E. A. M. ^{[1
]}

Nauta, B. ^{[1
]}

机构：

[1] Univ Twente, CTIT, IC Design Grp, NL-7500 AE Enschede, Netherlands

来源：

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS | 2008年 / 55卷 / 10期

关键词：

Adaptive filter; CMOS; cognitive radio; gain and phase mismatch; harmonic rejection mixing; I/Q imbalance; interference canceling; LMS; software-defined radio; switching mixers;

D O I：

10.1109/TCSII.2008.926796

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Current analog harmonic rejection mixers typically provide 30-40 dB of harmonic rejection, which is often not sufficient. We present a mixed analog-digital approach to harmonic rejection mixing that uses a digital interference canceler to reject the strongest interferer. Simulations indicate that, given a practical RF scenario, the digital canceler is able to improve the signal-to-interference ratio by 3045 dB.

引用

页码：966 / 970

页数：5

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