Title :
Iterative decision feedback equalisation of linearly precoded OFDM systems
Author :
Gaffney, B. ; Fagan, A.D.
Author_Institution :
Univ. Coll. Dublin
Abstract :
An iterative extension of the decision feedback equaliser (DFE) receiver for linearly precoded OFDM is proposed, which improves the performance significantly, but requires a Cholesky factorisation for each iteration every time the channel changes. Next, a lower complexity form for Hadamard precoded systems is proposed, which requires just one Cholesky factorisation per OFDM symbol, with no loss in performance
Keywords :
Hadamard codes; OFDM modulation; channel coding; decision feedback equalisers; iterative decoding; linear codes; radio receivers; Cholesky factorisation; DFE receiver; Hadamard precoded systems; decision feedback equaliser receiver; iterative decision feedback equalisation; linearly precoded OFDM systems;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20070220
