Performance and analysis of CDM-FH-OFDMA for broadband wireless systems

Authors:
Kan Zheng;Lu Han;Jianfeng Wang;Wenbo Wang
Affiliations:
Wireless Signal Processing Lab, Beijing University of Posts & Telecomms, Beijing, China;Wireless Signal Processing Lab, Beijing University of Posts & Telecomms, Beijing, China;Wireless Signal Processing Lab, Beijing University of Posts & Telecomms, Beijing, China;Wireless Signal Processing Lab, Beijing University of Posts & Telecomms, Beijing, China
Venue:
NETWORKING'06 Proceedings of the 5th international IFIP-TC6 conference on Networking Technologies, Services, and Protocols; Performance of Computer and Communication Networks; Mobile and Wireless Communications Systems
Year:
2006

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Abstract

Frequency-hopping (FH) methods in the Orthogonal frequency division multiplexing access(OFDMA) system,which are to assign user-specific subcarrier to the active users, have been paid much attention to in the broadband wireless communication system. In this paper, we present a novel multiple access scheme, referred to as CDM-FH-OFDMA, which is the extension of FH-OFDMA with code division multiplexing (CDM). This scheme can exploit the frequency diversity gain without the aid of channel coding. And it also can be employed in the multi-cell environment with one frequency reuse factor. Computer simulation demonstrates effectiveness of CDM-FH-OFDMA and the conclusion is followed.