Iterative Joint Channel Estimation and Decoding in Flat Correlated Rayleigh Fading
نویسندگان
چکیده
Performance evaluation of trellis and turbo-codes in at correlated Rayleigh fading traditionally assumes ideal channel interleaving and availability of perfect Channel State Information (CSI) at the receiver. This paper presents a joint iterative decoding and channel estimation scheme, which performs very well in the at Rayleigh fading channel with moderate to high Doppler rates, without channel interleaving or external CSI. The decoding algorithm models the phase trajectory of the channel as a Markov process, the dynamics of which depend on the Doppler rate. At each iteration it considers all possible phase trajectories to determine the maximum a posteriori probability (MAP) data sequence. This decoding procedure is a natural extension of standard turbo decoding, and permits decoding without pilot symbols, at the expense of introducing a signi cant complexity increase.
منابع مشابه
C. Komninakis and R. D. Wesel: Joint Iterative Channel Estimation and Decoding in Flat Correlated Rayleigh Fading
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