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ICC
2009
IEEE
161views Communications» more  ICC 2009»
16 years 23 days ago
Downlink OFDMA Resource Allocation Under Partial Channel State Information
Abstract— The problem of resource allocation (RA) in a downlink OFDMA system is examined under the realistic assumption of imperfect channel state information (CSI) at the base s...
Stelios Stefanatos, Nikos Dimitriou
GLOBECOM
2008
IEEE
16 years 15 days ago
Robust Transceiver Design for Multiuser MIMO Downlink
Abstract—In this paper, we consider robust joint linear precoder/receive filter design for multiuser multi-input multi-output (MIMO) downlink that minimizes the sum mean square ...
P. Ubaidulla, Ananthanarayanan Chockalingam
JSAC
2006
85views more  JSAC 2006»
15 years 6 months ago
Transmit selection diversity with maximal-ratio combining for multicarrier DS-CDMA wireless networks over Nakagami-m fading chan
Abstract--We propose the scheme to integrate transmit selection diversity/maximal-ratio combining (TSD/MRC) with multicarrier (MC) direct-sequence code-division multiple access (DS...
Jia Tang, Xi Zhang
VTC
2007
IEEE
16 years 9 days ago
An Upper Bound on SINR Threshold for Call Admission Control in Multiple-Class CDMA Systems with Imperfect Power-Control
–Call admission control (CAC) is essential to guarantee the signal quality in CDMA systems. Signal-tointerference-and-noise ratio (SINR) is used as a criterion for user admission...
Mahmoud El-Sayes, Mohamed H. Ahmed
CORR
2010
Springer
76views Education» more  CORR 2010»
15 years 1 months ago
Power Control with Imperfect Exchanges and Applications to Spectrum Sharing
In various applications, the effect of errors in gradient-based iterations is of particular importance when seeking saddle points of the Lagrangian function associated with constra...
Nikolaos Gatsis, Georgios B. Giannakis