Two-way cooperative AF relaying in spectrum-sharing systems: Enhancing cell-edge performance

Minghua Xia, Sonia Aïssa

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this contribution, two-way cooperative amplify-and-forward (AF) relaying technique is integrated into spectrumsharing wireless systems to improve spectral efficiency of secondary users (SUs). In order to share the available spectrum resources originally dedicated to primary users (PUs), the transmit power of a SU is optimized with respect to the average tolerable interference power at primary receivers. By analyzing outage probability and achievable data rate at the base station and at a cell-edge SU, our results reveal that the uplink performance is dominated by the average tolerable interference power at primary receivers, while the downlink always behaves like conventional one-way AF relaying and its performance is dominated by the average signal-to-noise ratio (SNR). These important findings provide fresh perspectives for system designers to improve spectral efficiency of secondary users in next-generation broadband spectrum-sharing wireless systems. © 2012 IEEE.
Original languageEnglish (US)
Title of host publication2012 IEEE 23rd International Symposium on Personal, Indoor and Mobile Radio Communications - (PIMRC)
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages1571-1576
Number of pages6
ISBN (Print)9781467325691
DOIs
StatePublished - Sep 2012

Fingerprint Dive into the research topics of 'Two-way cooperative AF relaying in spectrum-sharing systems: Enhancing cell-edge performance'. Together they form a unique fingerprint.

Cite this