Training sequence versus cyclic prefix-a new look on single carrier communication

Author

Deneire, Luc ; Gyselinckx, Bert ; Engels, Marc

Author_Institution

IMEC, Leuven, Belgium

Volume

5

Issue

7

fYear

2001

fDate

7/1/2001 12:00:00 AM

Firstpage

292

Lastpage

294

Abstract

Orthogonal frequency-division multiplexing (OFDM), with the help of a cyclic prefix, enables low complexity frequency domain equalization, but suffers from a high crest factor. Single carrier with cyclic prefix (SC-CP) has the same advantage with similar performance, but with a lower crest factor and enhanced robustness to phase noise. The cyclic prefix is overhead, so we put more information in it by implementing this cyclic prefix as a training sequence (TS). This new training aided frequency domain equalized single carrier (TASC) scheme offers us additional known symbols and enables better synchronization and (potentially) channel estimation, with the same performance as SC-CP.

Keywords

AWGN channels; OFDM modulation; equalisers; fading channels; frequency-domain analysis; multipath channels; phase noise; synchronisation; AWGN channel; OFDM; channel estimation; crest factor; cyclic prefix; cyclic prefix is overhead; fast fading channels; low complexity frequency domain equalization; multipath channels; orthogonal frequency-division multiplexing; phase noise robustness; semi-blind channel identification; single carrier communication; single carrier equalization; synchronization; training aided frequency domain equalization; training sequence; Channel estimation; Convolution; Frequency division multiplexing; Frequency domain analysis; Frequency estimation; Frequency synchronization; Maximum likelihood estimation; Noise robustness; OFDM; Phase noise;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/4234.935746

Filename

935746