User separation and frequency-time synchronization for the uplink of interleaved OFDMA

Zhongren Cao, Ufuk Tureli, Yu Dong Yao

Research output: Contribution to journalConference articlepeer-review

24 Scopus citations

Abstract

This paper exploits the signal algebraic structure on the uplink of OFDMA system adopting interleaved carrier assignment scheme for synchronization and user separation. We first propose a subspace based method to estimate multiple user CFO deterministically using only one OFDMA block. Next, we derive a MMSE filter which can extract the ideal received signal waveform of all users individually to implement user separation and frequency synchronization at the same time. Time synchronization is carried out on single user's signal The performance of the proposed algorithms is evaluated by simulations.

Original languageEnglish
Pages (from-to)1842-1846
Number of pages5
JournalConference Record - Asilomar Conference on Signals, Systems and Computers
Volume2
StatePublished - 2002
EventThe Thirty-Sixth Asilomar Conference on Signals Systems and Computers - Pacific Groove, CA, United States
Duration: 3 Nov 20026 Nov 2002

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