Title :
Direct sum construction of DC-free adder channel codes
Author :
Benachour, Phillip ; Farrell, Patric G. ; Honary, Bahram
Author_Institution :
Deparment of Commun. Syst., Lancaster Univ., UK
fDate :
6/23/1905 12:00:00 AM
Abstract :
The design of uniquely decodable DC-free multi-user coding schemes with good rate sums for the multiple access adder channel is described in this paper. It is shown that by using the direct sum construction on short multi-user codes, it is possible to devise longer DC-free multi-user coding schemes with rate sums which increase quite rapidly at each iteration of the construction. Asymptotically, there is no penalty in requiring the coding schemes to be DC-free. In addition, the schemes can be efficiently soft decision decoded using a relatively low complexity sectionalised trellis
Keywords :
block codes; channel coding; decoding; multi-access systems; multiuser channels; DC-free adder channel codes; DC-free multiuser coding schemes; direct sum construction; iteration; low complexity sectionalised trellis; multiple access adder channel; short multiuser codes; soft decision decoding; Australia; Bandwidth; Baseband; Frequency conversion; Information rates; Iterative decoding; Land mobile radio; Local area networks; Performance loss; Time sharing computer systems;
Conference_Titel :
Information Theory Workshop, 2001. Proceedings. 2001 IEEE
Conference_Location :
Cairns, Qld.
Print_ISBN :
0-7803-7119-4
DOI :
10.1109/ITW.2001.955148
