Sciweavers

509 search results - page 19 / 102
» icassp 2008
Sort
View
ICASSP
2008
IEEE
16 years 14 days ago
Robust adaptive beamforming for general-rank signal models using positive semi-definite covariance constraint
In this paper, we develop an improved approach to the worstcase robust adaptive beamforming for general-rank signal models by means of taking into account the positive semi-defin...
Haihua Chen, Alex B. Gershman
ICASSP
2008
IEEE
16 years 14 days ago
Turbo-coded decode-and-forward strategy resilient to relay errors
Cooperation in wireless systems can achieve spatial diversity gains as well as coverage enhancement. In the usual decode-and-forward (DF) strategy, a relay cooperates only when it...
Harold H. Sneessens, Jérôme Louveaux,...
ICASSP
2008
IEEE
16 years 14 days ago
Layered wireless video multicast using omni-directional relays
— Wireless video multicast enables delivery of popular events to many wireless users in a bandwidth efficient manner. However, providing good and stable video quality to a large...
Ozgu Alay, Thanasis Korakis, Yao Wang, Elza Erkip,...
ICASSP
2008
IEEE
16 years 14 days ago
Mode sign estimation to improve source depth estimation
This paper describes source depth estimation in shallow water environments using a Horizontal Line Array of hydrophones on the sea bottom. A method based on modal propagation, usi...
Barbara Nicolas, Grégoire Le Touzé, ...
ICASSP
2008
IEEE
16 years 14 days ago
Low-rank covariance matrix tapering for robust adaptive beamforming
Covariance matrix tapering (CMT) is a popular approach to improve the robustness of adaptive beamformers against moving or wideband interferers. In this paper, we develop a comput...
Michael Rübsamen, Christian Gerlach, Alex B. ...