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Repeat accumulate code division multiple access and its hybrid detection

Record type: Conference or Workshop Item (Other)

In this paper, we propose the novel concept of Repeat Accumulate Code Division Multiple Access (RA-CDMA), which employs unique, user-specific channel code generator matrices (interleavers) for differentiating the users. We also suggest a Multilevel Structured (MLS) interleaver generation technique for the sake of reducing the memory storage requirements of our system and compare its correlation properties to those of the conventional random interleaver. A novel hybrid detector is designed for our system with the aid of EXtrinsic Information Transfer (EXIT) charts. Furthermore, we also design a low-complexity unequal power allocation scheme, assigning a different power to each user of this near-capacity transmission scheme. It is shown that when a sufficiently high interleaver length is employed, the RA-CDMA system is capable of approaching the Gaussian channel’s capacity.

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Zhang, R., Xu, L., Chen, S. and Hanzo, L. (2008) Repeat accumulate code division multiple access and its hybrid detection At IEEE ICC'08, China. 19 - 23 May 2008. , pp. 4790-4794.

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Published date: May 2008
Venue - Dates: IEEE ICC'08, China, 2008-05-19 - 2008-05-23
Organisations: Southampton Wireless Group


Local EPrints ID: 265804
PURE UUID: 0b668d67-bdcd-4041-b199-9299633ef5eb

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Date deposited: 27 May 2008 15:13
Last modified: 18 Jul 2017 07:22

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Author: R. Zhang
Author: L. Xu
Author: S. Chen
Author: L. Hanzo

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