Title :
Matching pursuit-based tap selection technique for UWB channel equalization
Author :
Zhiwei, Lin ; Premkumar, A.B. ; Madhukumar, A.S.
Author_Institution :
Sch. of Comput. Eng., Nanyang Technol. Univ., Singapore, Singapore
fDate :
9/1/2005 12:00:00 AM
Abstract :
In this letter, matching pursuit (MP) based tap selection technique is proposed and applied to ultra wideband (UWB) indoor channel equalization in the presence of inter symbol interference (ISI) and multiple access interference (MAI). Given the limited training sample support, quadratic constraint is incorporated into MP algorithm to insure the robustness for tap selection. The proposed method is shown to outperform the conventional minimum mean square error (MMSE) equalizer significantly given the same amount of training symbols.
Keywords :
channel estimation; constraint theory; equalisers; indoor radio; intersymbol interference; iterative methods; least mean squares methods; radiofrequency interference; time-frequency analysis; training; ultra wideband communication; ISI; MAI; MMSE equalizer; MP algorithm; UWB channel equalization; intersymbol interference; matching pursuit; minimum mean square error; multiple access interference; quadratic constraint; tap selection technique; training symbol; ultrawideband indoor channel; Channel estimation; Equalizers; Intersymbol interference; Management training; Matching pursuit algorithms; Multipath channels; Multiple access interference; Pursuit algorithms; Robustness; Ultra wideband technology;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2005.1506719
