Title :
Blind channel identification and equalization in OFDM system without cyclic prefix
Author :
Xuejun, Huang ; Houjie, Bi
Author_Institution :
Nanjing Univ. of Posts & Telecommun., China
Abstract :
This paper proposes a new OFDM system in which its channel can be blindly identified and equalized. By precoding OFDM blocks with different length in the OFDM system, without cyclic prefix, cyclostationarity is induced in the transmitter, so the channel in the OFDM system is guaranteed to be identifiability. Based on the estimation of the channel, a one-tap decision feedback equalizer (DFE) is developed for channel equalization. The performance of the OFDM system is simulated.
Keywords :
OFDM modulation; blind equalisers; channel estimation; decision feedback equalisers; modulation coding; OFDM blocks; OFDM system; blind channel equalization; blind channel identification; channel estimation; channel identifiability; cyclic prefix; one-tap decision feedback equalizer; orthogonal frequency division multiplexing; precoding; transmitter cyclostationarity; Added delay; Bandwidth; Bismuth; Blind equalizers; Decision feedback equalizers; Frequency-selective fading channels; Interference elimination; OFDM; Telecommunications; Transmitters;
Conference_Titel :
Communication Technology Proceedings, 2003. ICCT 2003. International Conference on
Print_ISBN :
7-5635-0686-1
DOI :
10.1109/ICCT.2003.1209904
