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Capacity-Approaching Signal Constellations for the Additive Exponential Noise Channel

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2 Author(s)
Le Goff, S.Y. ; Sch. of Electr. & Electron. Eng., Newcastle Univ., Newcastle upon Tyne, UK ; Zhiguo Ding

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.

Published in:

Wireless Communications Letters, IEEE  (Volume:1 ,  Issue: 4 )