Superimposed training on redundant precoding for low-complexity recovery of block transmissions

Shuichi Ohno, Georgios B. Giannakis

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

The adoption of orthogonal frequency-division multiplexing (OFDM) by 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. For low-complexity block-by-block processing, redundant precoders with cyclic prefix (CP) along with superimposed training sequence are optimally designed to enable least squares estimation of time-varying FIR channels and symbol recovery regardless of the underlying FIR frequency-selective multipath channel. Numerical results are also presented to access the performance of the proposed affine precoders.

Original languageEnglish (US)
Pages (from-to)1501-1505
Number of pages5
JournalIEEE International Conference on Communications
Volume5
DOIs
StatePublished - 2001

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