BER and optimal power allocation for amplify-and-forward relaying using pilot-aided maximum likelihood estimation

dc.contributor.authorWang, Kezhi
dc.contributor.authorChen, Yunfei
dc.contributor.authorAlouini, Mohamed-Slim
dc.contributor.authorXu, Feng
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
dc.contributor.departmentElectrical Engineering Program
dc.contributor.departmentCommunication Theory Lab
dc.contributor.institutionSchool of Engineering, University of WarwickCoventry, United Kingdom
dc.contributor.institutionCollege of Computer and Information, Hohai UniversityNanjing, China
dc.date.accessioned2015-08-03T12:09:49Z
dc.date.available2015-08-03T12:09:49Z
dc.date.issued2014-10
dc.description.abstractBit error rate (BER) and outage probability for amplify-and-forward (AF) relaying systems with two different channel estimation methods, disintegrated channel estimation and cascaded channel estimation, using pilot-aided maximum likelihood method in slowly fading Rayleigh channels are derived. Based on the BERs, the optimal values of pilot power under the total transmitting power constraints at the source and the optimal values of pilot power under the total transmitting power constraints at the relay are obtained, separately. Moreover, the optimal power allocation between the pilot power at the source, the pilot power at the relay, the data power at the source and the data power at the relay are obtained when their total transmitting power is fixed. Numerical results show that the derived BER expressions match with the simulation results. They also show that the proposed systems with optimal power allocation outperform the conventional systems without power allocation under the same other conditions. In some cases, the gain could be as large as several dB's in effective signal-to-noise ratio.
dc.description.sponsorshipThe work of Y. Chen was supported in part by the Open Research Project of the State Key Laboratory of Industrial Control Technology, Zhejiang University, China (Grant IC14T40). Part of this paper has been submitted for publication to the IEEE 80th Vehicular Technology Conference. The associate editor coordinating the review of this paper and approving it for publication was M. Uysal.
dc.identifier.citationWang, K., Chen, Y., Alouini, M.-S., & Xu, F. (2014). BER and Optimal Power Allocation for Amplify-and-Forward Relaying Using Pilot-Aided Maximum Likelihood Estimation. IEEE Transactions on Communications, 62(10), 3462–3475. doi:10.1109/tcomm.2014.2358219
dc.identifier.doi10.1109/TCOMM.2014.2358219
dc.identifier.issn00906778
dc.identifier.journalIEEE Transactions on Communications
dc.identifier.urihttp://hdl.handle.net/10754/563779
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)
dc.subjectAmplify-and-forward (AF)
dc.subjectcascaded channel estimation (CCE)
dc.subjectdisintegrated channel estimation (DCE)
dc.subjectmaximum likelihood (ML)
dc.subjectoptimal power allocation
dc.subjectpilot-symbolaided
dc.titleBER and optimal power allocation for amplify-and-forward relaying using pilot-aided maximum likelihood estimation
dc.typeArticle
display.details.left<span><h5>Type</h5>Article<br><br><h5>Authors</h5><a href="https://repository.kaust.edu.sa/search?spc.sf=dc.date.issued&spc.sd=DESC&f.author=Wang, Kezhi,equals">Wang, Kezhi</a><br><a href="https://repository.kaust.edu.sa/search?spc.sf=dc.date.issued&spc.sd=DESC&f.author=Chen, Yunfei,equals">Chen, Yunfei</a><br><a href="https://repository.kaust.edu.sa/search?query=orcid.id:0000-0003-4827-1793&spc.sf=dc.date.issued&spc.sd=DESC">Alouini, Mohamed-Slim</a> <a href="https://orcid.org/0000-0003-4827-1793" target="_blank"><img src="https://repository.kaust.edu.sa/server/api/core/bitstreams/82a625b4-ed4b-40c8-865a-d6a5225a26a4/content" width="16" height="16"/></a><br><a href="https://repository.kaust.edu.sa/search?spc.sf=dc.date.issued&spc.sd=DESC&f.author=Xu, Feng,equals">Xu, Feng</a><br><br><h5>KAUST Department</h5><a href="https://repository.kaust.edu.sa/search?spc.sf=dc.date.issued&spc.sd=DESC&f.department=Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division,equals">Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division</a><br><a href="https://repository.kaust.edu.sa/search?spc.sf=dc.date.issued&spc.sd=DESC&f.department=Electrical Engineering Program,equals">Electrical Engineering Program</a><br><a href="https://repository.kaust.edu.sa/search?spc.sf=dc.date.issued&spc.sd=DESC&f.department=Communication Theory Lab,equals">Communication Theory Lab</a><br><br><h5>Date</h5>2014-10</span>
display.details.right<span><h5>Abstract</h5>Bit error rate (BER) and outage probability for amplify-and-forward (AF) relaying systems with two different channel estimation methods, disintegrated channel estimation and cascaded channel estimation, using pilot-aided maximum likelihood method in slowly fading Rayleigh channels are derived. Based on the BERs, the optimal values of pilot power under the total transmitting power constraints at the source and the optimal values of pilot power under the total transmitting power constraints at the relay are obtained, separately. Moreover, the optimal power allocation between the pilot power at the source, the pilot power at the relay, the data power at the source and the data power at the relay are obtained when their total transmitting power is fixed. Numerical results show that the derived BER expressions match with the simulation results. They also show that the proposed systems with optimal power allocation outperform the conventional systems without power allocation under the same other conditions. In some cases, the gain could be as large as several dB's in effective signal-to-noise ratio.<br><br><h5>Citation</h5>Wang, K., Chen, Y., Alouini, M.-S., & Xu, F. (2014). BER and Optimal Power Allocation for Amplify-and-Forward Relaying Using Pilot-Aided Maximum Likelihood Estimation. IEEE Transactions on Communications, 62(10), 3462–3475. doi:10.1109/tcomm.2014.2358219<br><br><h5>Acknowledgements</h5>The work of Y. Chen was supported in part by the Open Research Project of the State Key Laboratory of Industrial Control Technology, Zhejiang University, China (Grant IC14T40). Part of this paper has been submitted for publication to the IEEE 80th Vehicular Technology Conference. The associate editor coordinating the review of this paper and approving it for publication was M. Uysal.<br><br><h5>Publisher</h5><a href="https://repository.kaust.edu.sa/search?spc.sf=dc.date.issued&spc.sd=DESC&f.publisher=Institute of Electrical and Electronics Engineers (IEEE),equals">Institute of Electrical and Electronics Engineers (IEEE)</a><br><br><h5>Journal</h5><a href="https://repository.kaust.edu.sa/search?spc.sf=dc.date.issued&spc.sd=DESC&f.journal=IEEE Transactions on Communications,equals">IEEE Transactions on Communications</a><br><br><h5>DOI</h5><a href="https://doi.org/10.1109/TCOMM.2014.2358219">10.1109/TCOMM.2014.2358219</a></span>
kaust.personAlouini, Mohamed-Slim
orcid.authorWang, Kezhi
orcid.authorChen, Yunfei
orcid.authorAlouini, Mohamed-Slim::0000-0003-4827-1793
orcid.authorXu, Feng
orcid.id0000-0003-4827-1793
Files