Code priority of multiuser OFDM systems in frequency asynchronous environments

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

An approximately MAI-free multiaccess OFDM transceiver, called the precoded multiuser (PMU-OFDM) OFDM system here, was proposed in [5]. In this work, we extend results in [5], and propose a code priority scheme based on the even/odd Hadamard-Walsh code selection to enhance the performance of the PMU-OFDM system in a CFO environment. Based on the observation that different codewords have different contributions to multiaccess interference (MAI) that are correlated with the number of crossings of a particular Hadamard-Walsh codeword, we propose a code priority scheme by ranking codewords according to their contributions to MAI. Simulation results are given to demonstrate the advantages of the proposed priority.

Original languageEnglish
Title of host publicationVTC 2005-Fall
Subtitle of host publicationMid Way Through the Decade - Technology Past, Present and Future
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1103-1107
Number of pages5
ISBN (Electronic)0780391527
DOIs
StatePublished - 28 Sep 2005
Event62nd Vehicular Technology Conference, VTC 2005 - Dallas, United States
Duration: 25 Sep 200528 Sep 2005

Publication series

NameIEEE Vehicular Technology Conference
Volume2
ISSN (Print)1550-2252

Conference

Conference62nd Vehicular Technology Conference, VTC 2005
Country/TerritoryUnited States
CityDallas
Period25/09/0528/09/05

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