Title :
Sub-Nyquist sampling based narrowband interference mitigation in UWB impulse radio
Author :
Jin, B.Z. ; Zhang, Shaoting ; Pan, Jeng-Shyang ; Lin, X.K.
Author_Institution :
Dept. of Electron. Eng., Tsinghua Univ., Beijing, China
Abstract :
Based on characteristics of sparsity and significance of the narrowband interference (NBI) signal in the fast Fourier transform domain even at sub-Nyquist sampling rate, a novel NBI detection and mitigation scheme is proposed. An orthogonal matrix for projecting the discrete-time NBI signal into a zero vector is derived. Simulation results show that the proposed scheme can greatly improve the signal-to-interference-plus-noise ratio.
Keywords :
fast Fourier transforms; interference suppression; matrix algebra; signal detection; signal sampling; ultra wideband communication; NBI signal detection; UWB impulse radio; discrete-time NBI signal; fast Fourier transform; narrowband interference mitigation; orthogonal matrix; signal-to-interference-plus-noise ratio; sub-Nyquist sampling;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2012.1645
