Power-Rate Allocation in DS/CDMA Based on Discretized Verhulst Equilibrium

TL;DR

This paper extends the discrete Verhulst power equilibrium method to optimize power and rate allocation in DS/CDMA systems, ensuring QoS for multirate users with efficient convergence and low complexity.

Contribution

It adapts the Verhulst power allocation algorithm to the joint power-rate control problem in DS/CDMA, considering multiple user classes and QoS constraints.

Findings

Validates the proposed resource allocation method through numerical results.

Demonstrates good convergence time and solution quality compared to analytical methods.

Shows reduced computational complexity in the power-rate allocation process.

Abstract

This paper proposes to extend the discrete Verhulst power equilibrium approach, previously suggested in [1], to the power-rate optimal allocation problem. Multirate users associated to different types of traffic are aggregated to distinct user' classes, with the assurance of minimum rate allocation per user and QoS. Herein, Verhulst power allocation algorithm was adapted to the single-input-single-output DS/CDMA jointly power-rate control problem. The analysis was carried out taking into account the convergence time, quality of solution, in terms of the normalized squared error (NSE), when compared with the analytical solution based on interference matrix inverse, and computational complexity. Numerical results demonstrate the validity of the proposed resource allocation methodology.