On channel estimation in OFDM systems

Author

Van de Beek, Jan-Jaap ; Edfors, Ove ; Sandell, Magnus ; Wilson, Sarah Kate ; Borjesson, Per Ola

Author_Institution

Div. of Signal Processing, Lulea Univ. of Technol., Sweden

Volume

2

fYear

1995

fDate

25-28 Jul 1995

Firstpage

815

Abstract

The use of multi-amplitude signaling schemes in wireless OFDM systems requires the tracking of the fading radio channel. The paper addresses channel estimation based on time-domain channel statistics. Using a general model for a slowly fading channel, the authors present the MMSE and LS estimators and a method for modifications compromising between complexity and performance. The symbol error rate for a 18-QAM system is presented by means of simulation results. Depending upon estimator complexity, up to 4 dB in SNR can be gained over the LS estimator

Keywords

computational complexity; error statistics; fading; frequency division multiplexing; land mobile radio; least mean squares methods; quadrature amplitude modulation; telecommunication signalling; time-domain analysis; time-varying channels; tracking; 18-QAM system; 4 dB; LS estimators; MMSE; OFDM systems; channel estimation; complexity; fading radio channel; multi-amplitude signaling schemes; performance; slowly fading channel; symbol error rate; time-domain channel statistics; tracking; Channel estimation; Digital TV; Digital audio broadcasting; Error analysis; Fading; Frequency division multiplexing; OFDM; Signal processing; Statistics; Time domain analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 1995 IEEE 45th

Conference_Location

Chicago, IL

ISSN

1090-3038

Print_ISBN

0-7803-2742-X

Type

conf

DOI

10.1109/VETEC.1995.504981

Filename

504981