NDLI: Pilot Power Optimization for AF Relaying Using Maximum Likelihood Channel Estimation

Content Provider	IEEE Xplore Digital Library
Author	Kezhi Wang Yunfei Chen Alouini, M.-S. Feng Xu
Copyright Year	2014
Description	Author affiliation: Electr. & Math. Sci. & Eng. (CEMSE) Div., King Abdullah Univ. of Sci. & Technol. (KAUST), Thuwal, Saudi Arabia (Alouini, M.-S.) \|\| Sch. of Eng., Univ. of Warwick, Coventry, UK (Kezhi Wang; Yunfei Chen) \|\| Coll. of Comput. & Inf., Hohai Univ., Nanjing, China (Feng Xu)
Abstract	Bit error rates (BERs) for amplify-and-forward (AF) relaying systems with two different pilot-symbol- aided channel estimation methods, disintegrated channel estimation (DCE) and cascaded channel estimation (CCE), are derived in Rayleigh fading channels. Based on these BERs, the pilot powers at the source and at the relay are optimized when their total transmitting powers are fixed. Numerical results show that the optimized system has a better performance than other conventional nonoptimized allocation systems. They also show that the optimal pilot power in variable gain is nearly the same as that in fixed gain for similar system settings.
Starting Page	1
Ending Page	5
File Size	168802
Page Count	5
File Format	PDF
ISBN	9781479944491
DOI	10.1109/VTCFall.2014.6966131
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-09-14
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Relays Bit error rate Resource management Channel estimation Fading Estimation Signal to noise ratio
Content Type	Text
Resource Type	Article

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