Channel assignment in multi-antenna OFDM systems
Conference: European Wireless 2006 - 12th European Wireless Conference 2006 - Enabling Technologies for Wireless Multimedia Communications
04/02/2006 - 04/05/2006 at Athens, Greece
Proceedings: European Wireless 2006
Pages: 5Language: englishTyp: PDF
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Authors:
Hottinen, Ari (Nokia Research Center, P.O. Box 407, 00045 Nokia Group, Finland)
Heikkinen, Tiina (MTT Economic Research, Luutnantintie 13, 00410 Helsinki, Finland)
Abstract:
This paper considers channel (subchannel, subcarrier) assignment problems that arise multi-carrier multi-antenna wireless systems. In particular, we propose channel-aware assignment of subcarriers to different antennas so that we improve performance while reducing the peak-to-average ratio in the antenna-specific power amplifiers. Moreover, simplifications to the proposed optimization models are proposed in order to reduce the computational complexity of the assignment problem. Simulation results demonstrate the applicability of the proposed techniques in frequency-selective channels.