Title :
Capacity-Approaching Signal Constellations for the Additive Exponential Noise Channel
Author :
Le Goff, Stéphane Y. ; Ding, Zhiguo
Author_Institution :
Sch. of Electr. & Electron. Eng., Newcastle Univ., Newcastle upon Tyne, UK
fDate :
8/1/2012 12:00:00 AM
Abstract :
We present a new family of signal constellations, called log constellations, that can be used to design near-capacity coded modulation schemes over additive exponential noise (AEN) channels. Log constellations are designed by geometrically approximating the input distribution that maximizes the AEN channel capacity. The mutual information achievable over AEN channels with both coded modulation (CM) and bit-interleaved coded modulation (BICM) approaches is evaluated for various signal sets via computer simulations.
Keywords :
AWGN channels; channel capacity; interference suppression; interleaved codes; modulation coding; AEN channel capacity; BICM; additive exponential noise channel; bit-interleaved coded modulation; capacity-approaching signal constellation; computer simulation; log constellation; near-capacity coded modulation scheme; signal sets; Additives; Channel capacity; Constellation diagram; Mutual information; Signal to noise ratio; AEN channels; BICM; modulation constellation;
Journal_Title :
Wireless Communications Letters, IEEE
DOI :
10.1109/WCL.2012.050112.120058
