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ICASSP
2011
IEEE
14 years 10 months ago
Joint bandwidth and power allocation in cognitive radio networks under fading channels
A problem of joint optimal bandwidth and power allocation in cognitive networks under fading channels is considered. It is assumed that multiple secondary users (SUs) share the sp...
Xiaowen Gong, Sergiy A. Vorobyov, Chintha Tellambu...
ICASSP
2011
IEEE
14 years 10 months ago
Global convergence of independent component analysis based on semidefinite programming relaxation
In the independent component analysis, polynomial functions of higher order statistics are often used as cost functions. However, such cost functions usually have many local minim...
Shotaro Akaho, Jun Fujiki
ASAP
2009
IEEE
120views Hardware» more  ASAP 2009»
16 years 3 months ago
Design and Implementation of a Radix-4 Complex Division Unit with Prescaling
—We present a design and implementation of a radix-4 complex division unit with prescaling of the operands. Specifically, we extend the treatment of the residual bound and error...
Pouya Dormiani, Milos D. Ercegovac, Jean-Michel Mu...
VTC
2008
IEEE
16 years 20 days ago
Reduced-Complexity Adaptive Receiver Algorithms for 4G SU-MIMO Systems
Abstract—In this paper we present reduced-complexity highperformance receivers for single-user MIMO systems that employ coded OFDM transmission with bit-interleaved coded modulat...
Ozgun Y. Bursalioglu, Haralabos C. Papadopoulos, C...
ICC
2007
IEEE
147views Communications» more  ICC 2007»
16 years 18 days ago
MIMO OFDM Frequency Offset Estimator with Low Computational Complexity
— This paper addresses a low complexity frequency offset estimator for multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) systems over freque...
Yanxiang Jiang, Xiaohu You, Xiqi Gao, Hlaing Minn