Frequency synchronization for interleaved OFDMA uplink systems

Shih Jen Yang, Yung Yi Wang*

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review

2 Scopus citations

Abstract

This study presents a novel frequency synchronization scheme for orthogonal frequency division multiple access uplink systems. The proposed approach first estimates the carrier frequency offset (CFO) from the zeros of a backward prediction system. Then, based on the CFO estimates, two types of filters, namely zero-forcing and the linearly constrained minimum variance filters, are developed to suppress multiple access interference (MAI). Computer simulation results show that in addition to having a reduced computational complexity, the proposed algorithm has reliable CFO estimates and possesses at least a 3-dB power gain in MAI suppression over conventional minimum mean square error algorithms for frequency synchronization.

Original languageEnglish
Pages (from-to)8855-8869
Number of pages15
JournalJournal of the Franklin Institute
Volume356
Issue number15
DOIs
StatePublished - 10 2019

Bibliographical note

Publisher Copyright:
© 2019 The Franklin Institute

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