Zhang, R., Xu, L., Chen, S. and Hanzo, L.
Repeat accumulate code division multiple access and its hybrid detection
At IEEE ICC'08, China.
19 - 23 May 2008.
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.
Conference or Workshop Item
|Venue - Dates:
||IEEE ICC'08, China, 2008-05-19 - 2008-05-23
||Southampton Wireless Group
||27 May 2008 15:13
||17 Apr 2017 19:13
|Further Information:||Google Scholar|
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