An analog approach to suppressing in-band narrow-band interference in UWB receivers

被引：17

作者：

Fischer, Timothy Wayne ^{[1
]}

Kelleci, Burak ^{[1
]}

Shi, Kai ^{[1
]}

Karsilayan, Aydin Ilker ^{[1
]}

Serpedin, Erchin ^{[1
]}

机构：

[1] Texas A&M Univ, Dept Elect & Comp Engn, College Stn, TX 77843 USA

来源：

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS | 2007年 / 54卷 / 05期

关键词：

analog filters; least mean square (LMS); multi-band orthogonal frequency-division multiplexing (MB-OFDM); notch filters; ultra-wide-band (UWB);

D O I：

10.1109/TCSI.2007.895518

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：

Due to the huge bandwidth of ultra-wide-band (UWB) systems, in-band narrow-band interference (NBI) may hinder receiver performance. Sources of potential NBI that lie within the IEEE 802.15.3a UWB bandwidth are presented. To. combat interference in multi-band orthogonal frequency-division multiplexing (MB-OFDM) UWB systems, an analog notch filter is designed to be included in the UWB receive chain. The filter's architecture is based on feedforward subtraction of the interference, and includes a least-mean-square (LMS) tuning scheme to match amplitudes of the two paths. An 8-bit discrete control is used to adjust the filter's center frequency across the UWB baseband. It was fabricated in TSMC's 0.18-mu m process, and experimental results are provided.

引用

页码：941 / 950

页数：10

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