Sciweavers

ICASSP
2011
IEEE
12 years 8 months ago
Source localization using time difference of arrival within a sparse representation framework
The problem addressed is source localization via time-differenceof-arrival estimation in a multipath channel. Solving this localization problem typically implies cross-correlating...
Ciprian R. Comsa, Alexander M. Haimovich, Stuart C...
TIT
2010
174views Education» more  TIT 2010»
12 years 11 months ago
Toeplitz Compressed Sensing Matrices With Applications to Sparse Channel Estimation
Compressed sensing (CS) has recently emerged as a powerful signal acquisition paradigm. In essence, CS enables the recovery of high-dimensional sparse signals from relatively few ...
Jarvis Haupt, Waheed Uz Zaman Bajwa, Gil M. Raz, R...
CORR
2008
Springer
97views Education» more  CORR 2008»
13 years 4 months ago
Spreading Signals in the Wideband Limit
Abstract-- Wideband communications are asymptotically impossible with signals that are spread over a very wide band and are transmitted over a multipath channel unknown ahead of ti...
Elchanan Zwecher, Dana Porrat
ICC
2007
IEEE
13 years 8 months ago
CS-CDMA/CP with M-ZCZ Codes Over a Multipath Fading Channel with Excess Spreads
Convolutional spreading CDMA with cyclic prefix (CS-CDMA/CP) enables multiuser interference-free (MUI-free) transmission over multipath channels with the use of zero correlation zo...
Nalin S. Weerasinghe, Takeshi Hashimoto
GLOBECOM
2008
IEEE
13 years 11 months ago
Performance of Constrained Blind Adaptive DS-CDMA UWB Multiuser Detector in Multipath Channel with Narrowband Interference
—In this paper we derive and propose constrained blind DS-CDMA UWB multiuser detection algorithm to suppress the multi access interference (MAI) in multipath channels, and studie...
Gangadhar S. Biradar, Shabbir N. Merchant, Uday B....
GLOBECOM
2009
IEEE
13 years 11 months ago
How Much Training Is Needed for Iterative Multiuser Detection and Decoding?
Abstract—This paper studies large randomly spread directsequence code-division multiple-access system operating over a block fading multipath channel. Channel knowledge is obtain...
Mikko Vehkaperä, Keigo Takeuchi, Ralf R. M&uu...