108 search results - page 6 / 22 » Spatial correlation in ultrawideband channels |
VTC
2008
IEEE
15 years 4 months ago
2008
IEEE
— In OFDMA systems, channel quality information (CQI) feedback is used to determine the modulation and coding level of a mobile station (MS). When the MS uses diversity, it trans...
GLOBECOM
2008
IEEE
15 years 4 months ago
2008
IEEE
—In this paper, a tap-wise LMMSE channel estimator for MIMO W-CDMA is derived. Descrambling operations applied to delayed versions of the received signal whiten the input signal....
ICC
2007
IEEE
15 years 4 months ago
2007
IEEE
—The realistic performance of a multi-input multi-output (MIMO) communication system depends strongly on the spatial correlation properties introduced by clustering in the propag...
VTC
2006
IEEE
15 years 4 months ago
2006
IEEE
—In this paper, the exact closed-form capacity expression for a hybrid selection/MIMO (H-S/MIMO) system in the spatial correlated Rayleigh fading channels is investigated. There ...
TCOM
2008
14 years 10 months ago
2008
Abstract--This paper addresses the problem of joint optimization of transmit beamforming and space-frequency (SF) coding for MIMO-OFDM systems with spatial correlation feedback in ...