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Direction finding receiver for UWB impulse radio signal in multipath environment
Author(s) -
Lie Joni Polili,
Ng Boon Poh,
See Chong Meng Samson
Publication year - 2010
Publication title -
international journal of communication systems
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.344
H-Index - 49
eISSN - 1099-1131
pISSN - 1074-5351
DOI - 10.1002/dac.1123
Subject(s) - multipath propagation , computer science , impulse (physics) , angle of arrival , ultra wideband , signal (programming language) , antenna array , antenna (radio) , radio receiver design , radio propagation , electronic engineering , algorithm , telecommunications , acoustics , transmitter , physics , engineering , programming language , channel (broadcasting) , quantum mechanics
In this paper, we propose a direction finding (DF) receiver for ultra wideband impulse radio (UWB‐IR) signal in a realistic multipath environment. The receiver uses an array of antenna, where each antenna is connected to a proposed propagation‐delay estimation structure. The advantage of the proposed structure is that it outputs a trapezoidal signal whose amplitude reflects the propagation delay and thus relaxes the sampling rate requirement of the analog‐to‐digital‐converter (ADC). The angle‐of‐arrival (AOA) is estimated from the vector of propagation delays measured with respect to reference antenna. Because these estimated delays contain outliers, we propose a simple AOA estimation algorithm based on minimum fractional‐distance search. Experimental results based on simulation show that the proposed DF receiver achieves better performance compared with the minimum ℓ 1 ‐ and ℓ 2 ‐based (least‐squares based) distance search. Copyright © 2010 John Wiley & Sons, Ltd.