Optimal training and redundant precoding for block transmissions with application to wireless OFDM

Shuichi Ohno, Georgios B. Giannakis

Research output: Contribution to journalArticlepeer-review

25 Scopus citations

Abstract

The adoption of orthogonal frequency-division multiplexing (OFDM) of wireless local area networks and audio/video broadcasting standards testifies to the importance of recovering block precoded transmissions propagating through frequency-selective FIR channels. Existing block transmission standards invoke bandwidth-consuming error control codes to mitigate channel fades and training sequences to identify the FIR channels. To enable low-complexity block-by-block receiver processing, we design redundant precoders with cyclic prefix (CP) and superimposed training sequences for optimal channel estimation and guaranteed symbol recovery regardless of the underlying FIR frequency-selective channels. Numerical results are presented to access the performance of the designed training and precoding schemes.

Original languageEnglish (US)
Pages (from-to)2389-2392
Number of pages4
JournalICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
Volume4
DOIs
StatePublished - 2001

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