Energy Efficiency in Multi-hop CDMA Networks: A Game Theoretic Analysis

TL;DR

This paper uses game theory to analyze how receiver choices impact energy efficiency in multi-hop DS-CDMA networks, highlighting the benefits of advanced receivers like MMSE over traditional matched filters.

Contribution

It introduces a game-theoretic framework for optimizing receiver and power choices to maximize energy efficiency in large-scale multi-hop networks.

Findings

MMSE receivers significantly improve energy efficiency.

Non-cooperative and Pareto optimal solutions are compared.

Large network analysis reveals substantial efficiency gains.

Abstract

A game-theoretic analysis is used to study the effects of receiver choice on the energy efficiency of multi-hop networks in which the nodes communicate using Direct-Sequence Code Division Multiple Access (DS-CDMA). A Nash equilibrium of the game in which the network nodes can choose their receivers as well as their transmit powers to maximize the total number of bits they transmit per unit of energy is derived. The energy efficiencies resulting from the use of different linear multiuser receivers in this context are compared, looking at both the non-cooperative game and the Pareto optimal solution. For analytical ease, particular attention is paid to asymptotically large networks. Significant gains in energy efficiency are observed when multiuser receivers, particularly the linear minimum mean-square error (MMSE) receiver, are used instead of conventional matched filter receivers.