The family of repetition coded (RC) multicarrier system has a few members, such as multicarrier code division multiple access and intercarrier interference self-canceling scheme etc. This paper investigates three modes of the RC-OFDM system in the presence of unknown block fading channel. Relying on the code redundance, blind channel identification and equalization algorithms are developed. In the multitransmitter system, frequency-domain optimum precedes are proposed to solve the channel ambiguity. Simulation results are provided to corroborate the theoretical analysis.
['Yi Ma', 'Yi Huang', 'Fei Liu', 'Na Yi']
Blind channel estimation for repetition coded OFDM in block Rayleigh fading