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TDMA-Type Preamble for Low Complexity Multi-User Synchronization in OFDMA Uplink

By Xiaoyu Fu, Student Member and Hlaing Minn

Abstract

Abstract — The existing synchronization and channel estimation methods utilizing the IEEE 802.16a OFDMA uplink preamble structure are associated with very high complexity. This paper proposes a TDMA-type preamble structure and the corresponding synchronization and channel estimation methods for OFDMA uplink. The proposed approach decouples multi-user synchronization and channel estimation tasks into several singleuser synchronization and channel estimation tasks by which it achieves much lower complexity and better performance than the existing approaches. I

Year: 2009
OAI identifier: oai:CiteSeerX.psu:10.1.1.135.5251
Provided by: CiteSeerX
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