White Papers

On the Design of Robust Multiband OFDM Ultra-Wideband Receivers

Overview This paper analyzes the effects of NarrowBand Interferences (NBI) on the performance of a Multi-Band Orthogonal Frequency Division Multiplexing (MB-OFDM) Ultra-WideBand (UWB) receiver and proposes efficient schemes for signal reception and extraction of information in the presence of NBI. A study to assess the effects of NBI on the quantization noise in the Analog to Digital Converter (ADC) is conducted. It is found that a reduced-complexity digital frequency excision method is sufficient to compensate weak NBI (with Signal-to-Interference Ratio (SIR) larger than 0 dB). To combat efficiently strong NBI (with SIR less than 0 dB), this paper proposes a novel mixed interference suppression scheme that relies on the joint cooperation between a digital NBI detector and an adaptive analog notch filter.

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Publisher: Texas A&M University
File Format: PDF
Date Published: Apr 13, 2007
Format: White Papers
Topics: Wireless LAN, Mobile - Wireless Communications

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