TY - JOUR
T1 - Blind joint channel and data estimation for OFDM signals in Rayleigh fading
AU - Chang, M. X.
AU - Su, Yu-Ted
PY - 2001/5/6
Y1 - 2001/5/6
N2 - In this paper, we present several blind model-based joint channel and data estimation methods for Orthogonal Frequency Division Multiplexing (OFDM) signals. We model the time-varying channel response as a polynomial in time. Joint channel estimation and data detection are accomplished by finding the data sequence and regression coefficients that results in the minimum metric between the data-dependent polynomial and the received samples. Our method does not require the information of the channel statistics like signal-to-noise ratio (SNR) or correlation function. Performing exhaustive search among candidate sequences, though optimal, is impractical for long sequences. We develop some suboptimal methods and discuss their pro and con. A two-stage hybrid detection algorithm is proposed and used for detecting differential phase shift keying (DPSK) signals in Rayleigh fading.
AB - In this paper, we present several blind model-based joint channel and data estimation methods for Orthogonal Frequency Division Multiplexing (OFDM) signals. We model the time-varying channel response as a polynomial in time. Joint channel estimation and data detection are accomplished by finding the data sequence and regression coefficients that results in the minimum metric between the data-dependent polynomial and the received samples. Our method does not require the information of the channel statistics like signal-to-noise ratio (SNR) or correlation function. Performing exhaustive search among candidate sequences, though optimal, is impractical for long sequences. We develop some suboptimal methods and discuss their pro and con. A two-stage hybrid detection algorithm is proposed and used for detecting differential phase shift keying (DPSK) signals in Rayleigh fading.
UR - http://www.scopus.com/inward/record.url?scp=0035176418&partnerID=8YFLogxK
U2 - 10.1109/VETECS.2001.944487
DO - 10.1109/VETECS.2001.944487
M3 - Conference article
AN - SCOPUS:0035176418
SN - 0740-0551
VL - 2
SP - 791
EP - 795
JO - IEEE Vehicular Technology Conference
JF - IEEE Vehicular Technology Conference
IS - 53ND
M1 - 944487
T2 - IEEE VTS 53rd Vehicular Technology Conference (VTS SPRING 2001)
Y2 - 6 May 2001 through 9 May 2001
ER -