Optimal Random Access and Random Spectrum Sensing for an Energy Harvesting Cognitive Radio with and without Primary Feedback Leveraging

Journal Title: EAI Endorsed Transactions on Cognitive Communications - Year 2015, Vol 1, Issue 1

Abstract

We consider a secondary user (SU) with energy harvesting capability. We design access schemes for the SU which incorporate random spectrum sensing and random access, and which make use of the primary automatic repeat request (ARQ) feedback. We study two problem-formulations. In the first problemformulation, we characterize the stability region of the proposed schemes. The sensing and access probabilities are obtained such that the secondary throughput is maximized under the constraints that both the primary and secondary queues are stable. Whereas in the second problem-formulation, the sensing and access probabilities are obtained such that the secondary throughput is maximized under the stability of the primary queue and that the primary queueing delay is kept lower than a specified value needed to guarantee a certain quality of service (QoS) for the primary user (PU). We consider spectrum sensing errors and assume multipacket reception (MPR) capabilities. Numerical results show the enhanced performance of our proposed systems.

Authors and Affiliations

Ahmed El Shafie

Keywords

Related Articles

Coopetitive Business Models in Future Mobile Broadband with Licensed Shared Access (LSA)

Spectrum scarcity forces mobile network operators (MNOs) providing mobile broadband services to develop new business models that address spectrum sharing. It engages MNOs into coopetitive relationship with incumbents. Li...

On the Performance Analysis and Evaluation of Scaled Largest Eigenvalue in Spectrum Sensing: A Simple Form Approach

Scaled Largest Eigenvalue (SLE) detector stands out as the optimal single-primary-user detector in uncertain noisy environments. In this paper, we consider a multi-antenna cognitive radio system in which we aim at detect...

Evolutionary Multiobjective Optimization for Adaptive Dataflow-based Digital Predistortion Architectures

In wireless communication systems, high-power transmitters suffer from nonlinearities due to power ampliļ¬er (PA) characteristics, I/Q imbalance, and local oscillator (LO) leakage. Digital Predistortion (DPD) is an effect...

Predictive channel selection: Practical implementation and a social-aware vision for spectrum use

This paper demonstrates a predictive channel selection method by implementing it in software-defined radio (SDR) platforms and measuring the performance using over-the-air video transmissions. The method uses both long t...

A Hardware Prototype of a Flexible Spectrum Sensing Node for Smart Sensing Networks

In this paper we present a prototype for a spectrum sensing node for a cognitive radio sensing network. Our prototype consists of a custom down-conversion front-end with an RF input frequency range from 300 MHz to 3 GHz...

Download PDF file
  • EP ID EP45614
  • DOI http://dx.doi.org/10.4108/cogcom.1.1.e3
  • Views 409
  • Downloads 0

How To Cite

Ahmed El Shafie (2015). Optimal Random Access and Random Spectrum Sensing for an Energy Harvesting Cognitive Radio with and without Primary Feedback Leveraging. EAI Endorsed Transactions on Cognitive Communications, 1(1), -. https://europub.co.uk/articles/-A-45614