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Performance Optimization for Hybrid Two-Way Cognitive Cooperative Radio Networks With Imperfect Spectrum Sensing

In this paper, we consider a two-way cognitive cooperative radio network (TW-CCRN) with hybrid interweave-underlay spectrum access in the presence of imperfect spectrum sensing. Power allocation strategies are proposed that maximize the sum-rate and minimize the outage probability of the hybrid TW-C...

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Published in:IEEE access 2018, Vol.6, p.70582-70596
Main Authors: Chu, Thi My Chinh, Zepernick, Hans-Jurgen
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description In this paper, we consider a two-way cognitive cooperative radio network (TW-CCRN) with hybrid interweave-underlay spectrum access in the presence of imperfect spectrum sensing. Power allocation strategies are proposed that maximize the sum-rate and minimize the outage probability of the hybrid TW-CCRN. Specifically, based on the state of the primary network (PN), fading conditions, and system parameters, suitable power allocation strategies subject to the interference power constraint of the PN are derived for each transmission scenario of the hybrid TW-CCRN. Given the proposed power allocation strategies, we analyze the sum-rate and outage probability of the hybrid TW-CCRN over Rayleigh fading taking imperfect spectrum sensing into account. Numerical results are presented to illustrate the effect of the arrival rate, interference power threshold, transmit power of the PN, imperfect spectrum sensing, and maximum total transmit power on the sum-rate and outage probability of the hybrid TW-CCRN.
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subjects Cognitive cooperative radio network
Cognitive cooperative radio networks
Cognitive radio
Cognitive systems
Cooperative communication
Fading
hybrid interweave-underlay spectrum access
Hybrid power systems
Interference
Optimization
outage probability
Outages
power allocation
Power allocations
Power system reliability
Probability
Rayleigh fading
Relays
Resource management
Sensors
Spectroscopy
Spectrum access
sum-rate
Two way communications
Wave interference
title Performance Optimization for Hybrid Two-Way Cognitive Cooperative Radio Networks With Imperfect Spectrum Sensing
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