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http://dx.doi.org/10.6109/jkiice.2015.19.2.293

Performance Evaluation of OFDM Systems Using Multiuser Diversity  

Choi, Seung-Kuk (Department of Information and Communications Engineering, Incheon University)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.19, no.2, 2015 , pp. 293-300 More about this Journal
Abstract
Recently, multiuser diversity(MUD) technique is used to improve the performance of OFDM transmission systems. With STBC antenna diversity technique, the performance of OFDM systems can be also improved. Pilot symbol is used for the channel estimation in OFDM systems. However, imperfect channel estimates in this systems degrade the performance. The performance of MUD STBC OFDM systems using pilot symbol, gauged by the bit error rate, is analyzed considering the channel estimation error. Result shows that MUD can improve the required power by a factor of approximately 5 dB for users number 32.
Keywords
OFDM; multiuser diversity; STBC;
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