Year: 2021
Type: article
Abstract: We study communication systems over band-limited Additive White Gaussian Noise (AWGN) channels in which the transmitter’s output is constrained to be symmetric binary (bipolar). We improve the available Ozarow-Wyner-Ziv (OWZ) lower bound on capacity which is based on peak-power constrained pulse-amplitude modulation, by introducing new schemes (achievability) with two advantages over the studied OWZ schemes. Our schemes achieve a moderately improved information rate and they do so with much fewer sign transitions of the binary signal. The gap between the known upper bound, which is based on spectral constrains of bipolar signals, and our new achievable lower bound is reduced to 0.93 bits per Nyquist interval at high SNR.
Authors: Michael Peleg, Tomer Michaeli, Shlomo Shamai
Institution: Technion – Israel Institute of Technology
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $1,750
Funder: Horizon 2020 Framework Programme
Award: G7935357925
OpenAlex ID: W3160732344