NDLI: Adaptive Power Allocation for Multi-hop OFDM System with Non-regenerative Relaying

Content Provider	IEEE Xplore Digital Library
Author	Jie Shi Weiling Wu
Copyright Year	2008
Description	Author affiliation: Key Lab. of Inf. Process. & Intell. Technol., Beijing Univ. of Post & Telecommun., Beijing (Jie Shi; Weiling Wu)
Abstract	This paper aims to improve capacity in multi-hop OFDM system with non-regenerative relaying based on power allocation. The capacity model is presented, power allocation is analyzed based on the subsignal tuned to subcarrier of OFDM. Power allocation is decomposed to two subproblems. The first subproblem is the optimal power allocation to every hop of subsignal, when the power of each subsignal is fixed, an algorithm with low computing complexity is expressed to get optimal solution. The second subproblem is the power allocation to every subsignal, a suboptimal greedy algorithm is proposed based on the solution from the first subproblem. Compared with the usual equal power allocation method, the simulation result shows that proposed power allocation could improve system capacity greatly. With the subcarrier selection expressed in this paper, the system capacity is further improved.
Starting Page	1077
Ending Page	1080
File Size	331584
Page Count	4
File Format	PDF
ISBN	9780769533360
DOI	10.1109/CSSE.2008.796
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-12-12
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	OFDM Laboratories Optimization methods non-regenerative relaying power allocation Relays Power system modeling multi-hop relaying Wireless mesh networks Spread spectrum communication Information processing Power system relaying Resource management
Content Type	Text
Resource Type	Article

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