Active Cooperation Between Primary Users and Cognitive Radio Users in Heterogeneous Ad-Hoc Networks


In this paper, we consider a heterogeneous ad-hoc network where primary users may cooperate with cognitive radio (CR) users for the transmission of their data. We propose a new cooperation protocol that allows CR users to relay primary user signals in exchange for some spectrum. The spectrum released by primary users is used by CR users for their own data transmission. The proposed protocol maximizes the primary user power savings and the CR users' own data transmission rate. In addition, it provides more robust (potentially continuous) service for CR users, compared to the conventional practice in cognitive networks where cognitive users transmit in the spectrum holes of primary users (i.e., their service is interrupted when primary users need to transmit and no spectrum holes are available). More specifically, we propose a CR user power allocation scheme that maximizes the rate of transmission of CR user own data, for any given CR user power budget and a given bandwidth released from the primary user. Furthermore, we determine a range of possible transmission power levels that can be used by the primary user during cooperation without sacrificing its target transmission rate, and we derive a necessary condition on the quality of the channel between the primary user and the CR user that enables cooperation. Extensive numerical and simulation studies illustrate our theoretical developments and show that cooperation between a primary and CR user may lead, for example, to up to 80% savings of primary user power when compared to a noncooperation scheme at the same transmission power level.

Did you like this research project?

To get this research project Guidelines, Training and Code... Click Here

PROJECT TITLE :System Architecture and Signal Processing for Frequency-Modulated Continuous-Wave Radar Using Active Backscatter Tags - 2018ABSTRACT:During this Project, we study a frequency-modulated continuous-wave primarily
PROJECT TITLE :A band-selective low-noise amplifier using an improved tunable active inductor for 3–5 GHz UWB receivers - 2017ABSTRACT:We have a tendency to propose a 3 stage 3–five GHz band-selective ultra-wideband low noise
PROJECT TITLE :Analysing Acoustic Model Changes For Active Learning In Automatic Speech Recognition - 2017ABSTRACT:In active learning for Automatic Speech Recognition (ASR), a portion of information is automatically selected for
PROJECT TITLE :Completely decentralized active balancing battery management system - 2017ABSTRACT:The performance of a string of series-connected batteries is usually restricted by the worst cell within the string and a single
PROJECT TITLE :A MMC Topology Based on Unidirectional Current H-Bridge Sub-Module with Active Circulating Current Injection - 2017ABSTRACT:This study proposed a novel modular multilevel converter (MMC) based mostly on unidirectional

Ready to Complete Your Academic MTech Project Work In Affordable Price ?

Project Enquiry