A coarse frequency offset estimation in an OFDM system using the concept of the coherence phase bandwidth

Author

Bang, Keukjoon ; Cho, Namshin ; Cho, Jaehee ; Jun, Heeyoung ; Kim, Kwangchul ; Park, Hyuncheol ; Hong, Daesik

Author_Institution

Dept. of Broadcasting & Commun., Induk Inst. of Technol., Seoul, South Korea

Volume

49

Issue

8

fYear

2001

fDate

8/1/2001 12:00:00 AM

Firstpage

1320

Lastpage

1324

Abstract

We propose a new coarse frequency offset estimation algorithm in orthogonal frequency-division multiplexing systems, which performs robust operation in the presence of a symbol timing offset within an allowed range. The effect of a symbol timing offset on estimating a coarse frequency offset is analyzed, and the coherence phase bandwidth according to the allowed symbol timing offset is introduced. The proposed algorithm adapts the concept of the coherence phase bandwidth for the purpose of weakening the effect of the symbol timing offset

Keywords

OFDM modulation; digital audio broadcasting; frequency estimation; synchronisation; OFDM system; coarse frequency offset estimation; coherence phase bandwidth; orthogonal frequency-division multiplexing systems; symbol timing offset; AWGN; Bandwidth; Digital video broadcasting; Frequency division multiplexing; Frequency estimation; Frequency synchronization; OFDM; Phase estimation; Robustness; Timing;

fLanguage

English

Journal_Title

Communications, IEEE Transactions on

Publisher

ieee

ISSN

0090-6778

Type

jour

DOI

10.1109/26.939841

Filename

939841