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Paper detail

Achieving AWGN Channel Capacity with Sparse Graph Modulation and "In the Air" Coupling

Communication over a multiple access channel is considered. Each user modulates his signal as a superposition of redundant data streams where interconnection of data bits can be represented by means of a sparse graph. The receiver observes a signal resulting from the coupling of the sparse modulation graphs. Iterative interference cancellation decoding is analyzed. It is proved that spatial graph coupling allows to achieve the AWGN channel capacity with equal power transmissions.

preprint2011arXivOpen access
Dmitri Truhachev
math.ITInformation Theory
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Dmitri Truhachev

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