Polar Codes for the Two-User Multiple-Access Channel

Arikan's polar coding method is extended to two-user multiple-access channels. It is shown that if the two users of the channel use Arikan's construction, the resulting channels will polarize to one of five possible extremals, on each of which uncoded transmission is optimal. The sum rate achieved by this coding technique is the one that corresponds to uniform input distributions. The encoding and decoding complexities and the error performance of these codes are as in the single-user case: O(n log n) for encoding and decoding, and o(2(-n1/2-epsilon)) for the block error probability, where n is the blocklength.


Published in:
Ieee Transactions On Information Theory, 59, 10, 6583-6592
Year:
2013
Publisher:
Piscataway, Institute of Electrical and Electronics Engineers
ISSN:
0018-9448
Keywords:
Laboratories:




 Record created 2013-11-04, last modified 2018-03-17


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