Enhanced equalization in OFDM systems using cyclic prefix

A. A. Quadeer

Research output: Chapter in Book/Conference Proceeding/ReportConference Paper published in a bookpeer-review

5 Citations (Scopus)

Abstract

Orthogonal frequency division multiplexing (OFDM) is a modulation technique that provides high achievable data rates in wireless environment by combating multipath effects and has relatively simple implementation. In this paper, it is demonstrated that how the cyclic prefix can be used to enhance the operation of an OFDM equalizer when the channel is perfectly known at the receiver or is obtained through training. This method relies on transforming the OFDM channel into two subchannels (circular and linear) that share the same input and are characterized by the same channel parameters. Conventionally, data is recovered by utilizing only the circular subchannel while in this method, both the circular and linear subchannels are used to recover the data. The improved performance of the proposed method is demonstrated with the help of simulations for constant modulus as well as non-constant modulus data.

Original languageEnglish
Title of host publicationProceedings - 2010 IEEE International Conference on Wireless Communications, Networking and Information Security, WCNIS 2010
Pages40-44
Number of pages5
DOIs
Publication statusPublished - 2010
Externally publishedYes
Event2010 IEEE International Conference on Wireless Communications, Networking and Information Security, WCNIS 2010 - Beijing, China
Duration: 25 Jun 201027 Jun 2010

Publication series

NameProceedings - 2010 IEEE International Conference on Wireless Communications, Networking and Information Security, WCNIS 2010

Conference

Conference2010 IEEE International Conference on Wireless Communications, Networking and Information Security, WCNIS 2010
Country/TerritoryChina
CityBeijing
Period25/06/1027/06/10

Keywords

  • Equalization
  • Least squares
  • OFDM
  • Pilot based channel estimation

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