Title :
Transmitted-Reference UWB: A Digital Approach
Author :
Zhang, Wenyi ; Mitra, Urbashi
Author_Institution :
Univ. of Southern California, Los Angeles
Abstract :
Ultra-wideband (UWB) transmission utilizing transmitted-reference (TR) reception suffers from excess noise due to noisy correlation. In this paper, a digital approach is adopted to perform TR reception, circumventing technical difficulties in analog bandpass filtering. A tradeoff between signal integrity and noise suppression is identified, and based upon it, a signal-to-noise ratio (SNR) optimization problem is formulated to characterize the performance of digital TR reception. Numerical simulation results for multipath UWB channels are presented. It is illustrated that with appropriate design of digital TR receivers, acceptable channel output SNR is achievable even without any repetition diversity as typically resorted to in previous results of analog TR receivers.
Keywords :
band-pass filters; multipath channels; radio receivers; radio reception; ultra wideband communication; analog bandpass filtering; digital TR receiver; digital TR reception; multipath UWB channels; noise suppression; signal integrity; signal-to-noise ratio optimization; transmitted-reference UWB; ultrawideband transmission; Bandwidth; Digital filters; Filtering; Gaussian processes; Multipath channels; RAKE receivers; Random variables; Signal processing; Signal to noise ratio; Ultra wideband technology;
Conference_Titel :
Signals, Systems and Computers, 2007. ACSSC 2007. Conference Record of the Forty-First Asilomar Conference on
Conference_Location :
Pacific Grove, CA
Print_ISBN :
978-1-4244-2109-1
Electronic_ISBN :
1058-6393
DOI :
10.1109/ACSSC.2007.4487440
