Optimal training sequences and pilot tones for OFDM systems

1 April 2001

journal article
Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Communications Letters

Vol. 5 (4) , 151-153
https://doi.org/10.1109/4234.917097

Abstract

Orthogonal frequency-division multiplex (OFDM) systems transmit data in blocks. The two simplest ways of identifying the channel in OFDM systems are to insert a training sequence between consecutive blocks or to insert pilot tones inside each block. This article proves that both methods can achieve the same level of performance under certain conditions on the block length.

Keywords

OFDM
FREQUENCY DOMAIN ANALYSIS
CHANNEL ESTIMATION
MAXIMUM LIKELIHOOD ESTIMATION
FREQUENCY DIVISION MULTIPLEXING
SUFFICIENT CONDITIONS
EQUATIONS
FREQUENCY ESTIMATION
ADDITIVE WHITE NOISE
AUSTRALIA COUNCIL

This publication has 3 references indexed in Scilit:

A frequency domain deterministic approach to channel identification
IEEE Signal Processing Letters, 1999
James-Stein state filtering algorithms
IEEE Transactions on Signal Processing, 1998
Coded orthogonal frequency division multiplex [TV broadcasting]
Proceedings of the IEEE, 1995