Power-Bandwidth Efficiency and Capacity of Wireless Feedback Communication Systems

TL;DR

This paper analyzes how adaptive feedback communication systems with analog forward transmission can optimize power-bandwidth efficiency and approach Shannon capacity, highlighting differences from digital systems.

Contribution

It demonstrates that adaptive analog feedback systems can be fully optimized to nearly reach Shannon capacity, unlike digital systems.

Findings

Adaptive FCS with analog transmission achieve near Shannon capacity.

Differences between forward channel capacity and FCS capacity impact efficiency.

Optimization strategies improve power-bandwidth efficiency in feedback systems.

Abstract

The paper is devoted to the analysis of problems appearing in optimisation and improvement of the power-bandwidth efficiency of digital communication feedback systems (FCS). There is shown that unlike digital systems, adaptive FCS with the analogue forward transmission allow full optimisation and derivation of optimal transmission-reception algorithm approaching their efficiency to the Shannon boundary. Differences between the forward channel capacity and capacity of adaptive FCS as communication unit, as well as their influence of the power-bandwidth efficiency of transmission are considered.