Digital Cancellation of Harmonic and Intermodulation Distortion in Wideband SAW-Less Receivers

Esmail Babakrpur; Won Namgoong

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Digital Cancellation of Harmonic and Intermodulation Distortion in Wideband SAW-Less Receivers

机译：宽带SAW接收机中谐波和互调失真的数字消除

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This brief presents a digital distortion equalizer that compensates for the effects of both the harmonic mixing and intermodulation products in wideband surface acoustic wave (SAW)-less receivers. A mathematical framework is derived for analyzing signal distortion in the presence of harmonic and out-of-band interferers. This framework models a K-path SAW-less M-phase receiver, which provides sufficient front-end observations to cancel the distortion products. An adaptive minimum mean-squared error (MMSE) digital equalizer is employed to estimate the desired signal in the presence of distortion products. The MMSE equalizer jointly accounts for distortion products as well as correlated noise of the two paths. A dual-path 4-phase receiver fabricated in 130 nm CMOS process has been used to validate the distortion compensation scheme.

机译：本简介介绍了一种数字失真均衡器，可补偿无宽带表面声波（SAW）接收机中谐波混频和互调产物的影响。推导了一个数学框架，用于分析存在谐波和带外干扰源时的信号失真。该框架对无K路径SAW的M相接收器进行了建模，该接收器提供了足够的前端观察来抵消失真产物。在存在失真产物的情况下，采用自适应最小均方误差（MMSE）数字均衡器来估计所需信号。 MMSE均衡器共同考虑了两条路径的失真乘积以及相关噪声。采用130 nm CMOS工艺制造的双路径4相接收器已用于验证失真补偿方案。

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来源
《Circuits and Systems II: Express Briefs, IEEE Transactions on》 |2018年第11期|1554-1558|共5页
作者
Esmail Babakrpur; Won Namgoong;
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作者单位

Department of Electrical and Computer Engineering, University of Texas at Dallas, Richardson, TX, USA;

Department of Electrical and Computer Engineering, University of Texas at Dallas, Richardson, TX, USA;

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正文语种 eng
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关键词
Receivers; Harmonic analysis; Baseband; Equalizers; Harmonic distortion; Intermodulation distortion;

机译：接收机;谐波分析;基带;均衡器;谐波失真;互调失真;

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机译：宽带通信中继器产生的互调失真的实验测定

Digital Cancellation of Harmonic and Intermodulation Distortion in Wideband SAW-Less Receivers

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