NDLI: Power and discrete rate adaptation in BER constrained wireless powered communication networks

Content Provider	IET Digital Library
Author	Lei, Ming Zhang, Xingjun Yu, Bocheng Dong, Xiaoshe
Abstract	Optimal system throughput is a crucial design issue in wireless powered communication networks. Unlike related literature, this study considers the problem of maximising throughput (MTP) for a practical scenario, in which each user node (UN) selects its own rate from a discrete rate set and controls its transmission power according to its own channel state. The MTP with a bit-error-rate constraint is investigated based on two general uplink access methods. The formulation size is exponentially large with respect to the problem input. A novel greedy algorithm based on the column generation method (GA-CGM) is proposed to solve the problem efficiently. The GA-CGM decomposes the problem into a master problem and a subproblem. The master problem is solved by the simplex method. The subproblem is solved by a greedy algorithm due to its non-linearity programming model. The max–min throughput problem (MMTP) is also considered, because of the ‘doubly near-far’ phenomenon which leads to the unfair throughput among different UNs. Experimental results demonstrate that the proposed solutions are close to the optimal solutions for MTP and MMTP problems. They also show increasing the transmission power of a base station or decreasing the path-loss exponent improves the throughput performance.
Starting Page	2213
Ending Page	2221
Page Count	9
ISSN	17518628
Volume Number	12
e-ISSN	17518636
Issue Number	Issue 18, Nov (2018)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-com/12/18
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-com.2018.5380
Journal	IET Communications
Publisher Date	2018-07-13
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Bit-error-rate Constraint Cellular Radio Column Generation Method Crucial Design Issue Discrete Rate Error Statistics GA-CGM General Uplink Access Method Greedy Algorithm Integer Programming Linear Programming Master Problem Maximising Throughput Max–min Throughput Problem MMTP Problem Mobile Radio System MTP Optimal System Throughput Optimisation Optimisation Technique Problem Input Radio Frequency Interference Radio Link And Equipment Radio Network Simplex Method Statistics Telecommunication Control Throughput Performance Transmission Power Unfair Throughput Wireless Channel Wireless Powered Communication Network
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Computer Science Applications

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