Technology Category
Constraint Satisfaction and Optimization: Distributed CSP/OptimizationSearch and Optimization: Distributed SearchPlanning, Routing, and Scheduling: Optimization of Spatio-temporal Systems
On Decentralized Sum-Rate Maximization with Successive Interference Cancellation
🤖 AI Summary
This study addresses the problem of sum-rate maximization in decentralized wireless networks without requiring global channel state information (CSI). Focusing on the two-user symmetric Gaussian interference channel, the work investigates joint power and rate allocation combined with successive interference cancellation (SIC). By leveraging game-theoretic and convex optimization techniques, the authors propose a novel distributed resource allocation algorithm that converges to a solution closely approximating the global optimum using only local CSI. The proposed mechanism substantially outperforms orthogonal access and greedy strategies, achieving significant sum-rate gains without reliance on global CSI. To the best of the authors’ knowledge, this is the first approach to enable efficient and scalable decentralized SIC-based optimization in symmetric interference channels.
Technology Category
Application Category
📝 Abstract
Successive Interference Cancellation (SIC) is a powerful technique for managing interference in wireless networks, yet its optimal deployment in decentralized environments remains a challenge. This study investigates joint power and rate allocation in a two-user Gaussian interference channel incorporating SIC at the receivers. We characterize the global optimal solutions of the problem, and recognizing the limitations of centralized coordination, we introduce a novel decentralized algorithm for a symmetric channel configuration. Numerical results demonstrate that even without global Channel State Information, our proposed algorithm significantly outperforms traditional benchmarks, such as Orthogonal Access which suffers from temporal underutilization or greedy strategies that fail to exploit SIC gains.
Problem
Research questions and friction points this paper is trying to address.
Decentralized
Sum-Rate Maximization
Successive Interference Cancellation
Gaussian Interference Channel
Power and Rate Allocation
Innovation
Methods, ideas, or system contributions that make the work stand out.
Decentralized optimization
Successive Interference Cancellation
Gaussian interference channel
Power and rate allocation
Channel State Information
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