Referenced Items are not available for this document.
We propose and study a sub-channel selective OFDM spread spectrum system and a distributed algorithm for sub-channel allocation. The proposed system is a combination of OFDMA and OFDM-CDMA systems. For each user the maximal ratio combining weights of the sub-channels are used as channel information. The algorithm implements a simple but sub-optimal version of the water filling power allocation, thus increasing the transmitter power efficiency and decreasing the interference generated for other users. This algorithm also provides the ability to offer different quality of service (QoS) levels for different users. The convergence of the algorithm and its performance have been studied through simulation. The proposed system has significant advantage in BER performance, over the conventional OFDM-SS system
Published in:
Statistical Signal Processing, 2001. Proceedings of the 11th IEEE Signal Processing Workshop on
Date of Conference: 2001
- Page(s):
- 397 - 400
- Meeting Date :
- 06 Aug 2001-08 Aug 2001
- Print ISBN:
- 0-7803-7011-2
- INSPEC Accession Number:
- 7174162
- Digital Object Identifier :
- 10.1109/SSP.2001.955306
- Product Type:
- Conference Publications
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