Title :
WLC36-3: Selective Virtual Antenna Permutation for Layered OFDM-MIMO Transmission
Author :
Kim, Byoung-Hoon ; Kadous, Tamer ; Malladi, Durga ; Sarkar, Sandip ; Zhang, Xiaoxia ; Blanz, Josef
Author_Institution :
QUALCOMM Inc., San Diego, CA
fDate :
Nov. 27 2006-Dec. 1 2006
Abstract :
In this paper we introduce selective virtual antenna permutation (S-VAP) for layered OFDM-MIMO transmission in downlink cellular environments. In the S-VAP scheme, the base station spatially permutes multiple independently encoded layers and then transmits the permuted layers over selected virtual antennas. The mobile station employs a successive interference cancellation (SIC) based receiver to maximize the spectral efficiency. The layer permutation enables a significant reduction of channel quality feedback information necessary to adjust the data rate of each layer. Transmission over selected virtual antennas instead of physical antennas enables efficient power amplifier utilization and thus brings out a quantized spatial water-filling gain.
Keywords :
MIMO communication; OFDM modulation; cellular radio; feedback; interference suppression; telecommunication channels; channel quality feedback information; downlink cellular environments; layered OFDM-MIMO transmission; power amplifier; selective virtual antenna permutation; spatial water-filling gain; successive interference cancellation; Adaptive arrays; Base stations; Broadband antennas; Feedback; Interference cancellation; MIMO; Power amplifiers; Receiving antennas; Silicon carbide; Transmitting antennas;
Conference_Titel :
Global Telecommunications Conference, 2006. GLOBECOM '06. IEEE
Conference_Location :
San Francisco, CA
Print_ISBN :
1-4244-0356-1
Electronic_ISBN :
1930-529X
DOI :
10.1109/GLOCOM.2006.825
