A Novel Frequency-Domain Channel Parameters Estimation Method by Time-Domain Pilots Inserting for OFDM Systems

Author

Chen, Tao ; Wang, Min ; Fang, Yong

Author_Institution

Sch. of Commun. & Inf. Eng., Shanghai Univ., Shanghai

fYear

2009

fDate

11-13 Feb. 2009

Firstpage

1

Lastpage

5

Abstract

A novel least square (LS) estimation method for frequency-domain channel parameters is proposed for orthogonal frequency division multiplexing (OFDM) systems. It inserts character pilots with constant envelops in time domain to avoid influencing the peak-to-average power ratio (PAPR) of systems caused by the inserted pilots. Moreover, it improves the estimation accuracy significantly with much lower computing complexity by designing the appropriate character pilots and the pilot multiplex format. Simulation results have demonstrated that the proposed algorithm is more effective than the conventional LS method for practical applications.

Keywords

OFDM modulation; channel estimation; least squares approximations; time-frequency analysis; OFDM system; computational complexity; frequency-domain channel parameter estimation; least square estimation method; orthogonal frequency division multiplexing; peak-to-average power ratio; time-domain pilot; Channel estimation; Frequency estimation; Intersymbol interference; OFDM; Optical scattering; Optical transmitters; Parameter estimation; Peak to average power ratio; Signal processing algorithms; Time domain analysis; Channel estimation; LS; OFDM; PAPR;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Pervasive Computing, 2009. ISWPC 2009. 4th International Symposium on

Conference_Location

Melbourne, VIC

Print_ISBN

978-1-4244-2965-3

Electronic_ISBN

978-1-4244-2966-0

Type

conf

DOI

10.1109/ISWPC.2009.4800555

Filename

4800555