Performance Comparison Between Two Pilot Symbol-aided Channel Estimation Schemes for OFDM

Author

Li, Mingqi ; Liu, Yulin ; Peng, Qicong

Author_Institution

Univ. of Electron. Sci. & Technol. of China, Sichuan

fYear

2007

fDate

23-27 Sept. 2007

Firstpage

303

Lastpage

306

Abstract

Based on the least square (LS) criterion, the time-domain channel estimation (CE) algorithms for orthogonal frequency division multiplexing (OFDM) channel estimation are designed. Meanwhile we introduce some results on the generalized rotation matrix, which is used as linear transition to recover the OFDM data. We give the simulation comparisons between two different linear channel estimation methods based on different CE modulation scheme under Rayleigh fading channel, which is assumed flat within one frame. Simulation results show that when in-phase channel and quadrature-phase channel are used to carry the CE data, the BER and PER performance can be improved obviously.

Keywords

OFDM modulation; Rayleigh channels; channel estimation; error statistics; least squares approximations; time-domain analysis; BER; OFDM; Rayleigh fading channel; least square criterion; linear transition; orthogonal frequency division multiplexing; performance comparison; performance generalized rotation matrix; quadrature-phase channel; symbol-aided channel estimation schemes; time-domain channel estimation; Binary phase shift keying; Bit error rate; Channel estimation; Circuits; Delay estimation; Fading; Mathematics; OFDM modulation; Quadrature phase shift keying; Wireless LAN; OFDM; Rayleigh fading channel; channel estimation;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Design and Its Applications in Communications, 2007. IWSDA 2007. 3rd International Workshop on

Conference_Location

Chengdu

Print_ISBN

978-1-4244-1074-3

Electronic_ISBN

978-1-4244-1074-3

Type

conf

DOI

10.1109/IWSDA.2007.4408385

Filename

4408385