Title :
Analysis and design of interleavers for CDMA systems
Author :
Tarable, A. ; Montorsi, G. ; Benedetto, S.
Author_Institution :
Politecnico di Torino, Italy
Abstract :
The turbo-principle has been applied to multiuser receivers in CDMA systems. However, the role of interleavers in these turbo-receivers has not been studied yet. In this paper, we give a notion of optimality and of mutual optimality and a way to test it. Moreover, limiting the discussion to congruential interleavers and convolutional codes, we give sufficient conditions to construct a set of mutually optimal interleavers. Also, we provide some simulations to support our results.
Keywords :
block codes; code division multiple access; convolutional codes; interleaved codes; linear codes; multiuser channels; optimisation; receivers; turbo codes; AWGN channel; CDMA systems; congruential interleavers; convolutional codes; interleaver design; linear block code; multiuser receivers; mutually optimal interleavers; optimality; simulations; sufficient conditions; turbo codes; turbo-receivers; Convolutional codes; Filtering; Interference; Iterative decoding; Matched filters; Modulation coding; Multiaccess communication; Sufficient conditions; Testing; Turbo codes;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/4234.957381
