Stable Throughput Region of Cognitive-Relay Networks with Imperfect Sensing and Finite Relaying Buffer

TL;DR

This paper analyzes the stable throughput region of cognitive-relay networks considering imperfect sensing and finite relaying buffers, highlighting how sensing errors and buffer limitations impact network performance.

Contribution

It provides a novel analysis of the stable throughput region accounting for finite buffers and sensing imperfections in cognitive relaying networks.

Findings

Sensing errors significantly affect throughput.

Finite relaying buffers limit network stability.

Outage probabilities influence throughput regions.

Abstract

In this letter, we obtain the stable throughput region for a cognitive relaying scheme with a finite relaying buffer and imperfect sensing. The analysis investigates the effect of the secondary user's finite relaying capabilities under different scenarios of primary, secondary and relaying links outages. Furthermore, we demonstrate the effect of miss detection and false alarm probabilities on the achievable throughput for the primary and secondary users.