Sciweavers

TSP
2010
13 years 29 days ago
Cognitive radios with multiple antennas exploiting spatial opportunities
In this paper, the achievable rates of the so called "multiple-input multiple-output interference channel", exploited by a couple of single antenna primary terminals and...
Luca Bixio, Giacomo Oliveri, Marina Ottonello, Mir...
TSP
2010
13 years 29 days ago
Generalized discrete Fourier transform with nonlinear phase
Constant modulus transforms like discrete Fourier transform (DFT), Walsh transform, and Gold codes have been successfully used over several decades in several engineering applicati...
Ali N. Akansu, Handan Agirman-Tosun
TSP
2010
13 years 29 days ago
Transient and steady-state analysis of the affine combination of two adaptive filters
In this paper, we propose an approach to the transient and steady-state analysis of the affine combination of one fast and one slow adaptive filters. The theoretical models are bas...
Renato Candido, Magno T. M. Silva, Vitor H. Nascim...
TSP
2010
13 years 29 days ago
Coherence-based performance guarantees for estimating a sparse vector under random noise
We consider the problem of estimating a deterministic sparse vector x0 from underdetermined measurements Ax0 +w, where w represents white Gaussian noise and A is a given determinis...
Zvika Ben-Haim, Yonina C. Eldar, Michael Elad
TSP
2010
13 years 29 days ago
Fast algorithms for the computation of sliding sequency-ordered complex hadamard transform
Fast algorithms for computing the forward and inverse sequency-ordered complex Hadamard transforms (SCHT) in a sliding window are presented. The first algorithm consists of decompo...
Jiasong Wu, Huazhong Shu, Lu Wang, Lotfi Senhadji
TSP
2010
13 years 29 days ago
Adaptive sampling rate correction for acoustic echo control in voice-over-IP
Abstract--Hands-free terminals for speech communication employ adaptive filters to reduce echoes resulting from the acoustic coupling between loudspeaker and microphone. When using...
Matthias Pawig, Gerald Enzner, Peter Vary
TSP
2010
13 years 29 days ago
Sequential and cooperative sensing for multi-channel cognitive radios
Effective spectrum sensing is a critical prerequisite for multi-channel cognitive radio (CR) networks, where multiple spectrum bands are sensed to identify transmission opportuniti...
Seung-Jun Kim, Georgios B. Giannakis
TSP
2010
13 years 29 days ago
Power allocation for a MIMO relay system with multiple-antenna users
A power allocation or scheduling problem is studied for a multiuser multiple-input multiple-output (MIMO) wireless relay system where there is a non-regenerative relay between one ...
Yuan Yu, Yingbo Hua