Title :
Downlink Transmission Optimization and Statistical Feedback Strategies in a Multi-User IEEE 802.16m System
Author :
Papathanasiou, C. ; Dimitriou, N. ; Tassiulas, L.
Author_Institution :
Dept. of Comput. & Commun. Eng., Univ. of Thessaly, Volos, Greece
Abstract :
A multi-user MIMO/OFDMA system for the next generation broadband wireless access (BWA) networks is studied, in which the base station (BS) has only knowledge of the statistics of the channel. A combination of MIMO, OFDMA and FDD could be suitable to increase spectral efficiency in a high speed network. We investigate methods with scalable channel feedback and we analyze the trade off between the amount of channel state information (CSI) to the transmitter and the system performance. Simulation results demonstrate that substantial gain is obtained by the proposed schemes which take advantage the statistical information of the highly dynamic channel.
Keywords :
MIMO communication; OFDM modulation; broadband networks; channel estimation; frequency division multiple access; mobile radio; multiuser channels; radio access networks; statistical analysis; FDD; broadband wireless access; channel state information; downlink transmission optimization; frequency division duplex; multiuser IEEE 802.16m system; multiuser MIMO; multiuser OFDMA system; scalable channel feedback; statistical feedback strategy; Base stations; Channel state information; Downlink; High-speed networks; Information analysis; MIMO; Next generation networking; Performance analysis; State feedback; Statistics;
Conference_Titel :
Global Telecommunications Conference, 2009. GLOBECOM 2009. IEEE
Conference_Location :
Honolulu, HI
Print_ISBN :
978-1-4244-4148-8
DOI :
10.1109/GLOCOM.2009.5425533
