Title :
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
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;
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
DOI :
10.1109/IWSDA.2007.4408385
