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BER and optimal power allocation for amplify-and-forward relaying using pilot-aided maximum likelihood estimation
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Wang, Kezhi, Chen, Yunfei, Alouini, Mohamed-Slim and Xu, Feng (2014) BER and optimal power allocation for amplify-and-forward relaying using pilot-aided maximum likelihood estimation. IEEE Transactions on Communications, Volume 62 (Number 10). pp. 3462-3475. doi:10.1109/TCOMM.2014.2358219 ISSN 0090-6778.
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Official URL: http://dx.doi.org/10.1109/TCOMM.2014.2358219
Abstract
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.
Item Type: | Journal Article | ||||||
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Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering | ||||||
Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||||
Library of Congress Subject Headings (LCSH): | Bit error rate | ||||||
Journal or Publication Title: | IEEE Transactions on Communications | ||||||
Publisher: | IEEE | ||||||
ISSN: | 0090-6778 | ||||||
Official Date: | October 2014 | ||||||
Dates: |
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Volume: | Volume 62 | ||||||
Number: | Number 10 | ||||||
Number of Pages: | 14 | ||||||
Page Range: | pp. 3462-3475 | ||||||
DOI: | 10.1109/TCOMM.2014.2358219 | ||||||
Status: | Peer Reviewed | ||||||
Publication Status: | Published | ||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||
Date of first compliant deposit: | 10 February 2016 | ||||||
Date of first compliant Open Access: | 10 February 2016 |
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