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| An Optimal Allocation Model of Wireless In-band Full-duplex Channel for Multiple Access |
| WANG Wennai HUANG Yanan WU Wei WANG Bin |
| (School of Communications and Information, Nanjing University. of Posts and Telecommunications, Nanjing 210003, China) |
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Abstract The potential of wireless In-Band Full-Duplex (IBFD) in doubling spectral efficiency raises a special issue in channel allocation for Multi-user applications in capacity improvement. This paper presents an analysis on mutual interferences, contention conflicting and allocation constraints for different modes of full-duplex transmission. The maximization number of transmission links is chosen as the objective of multi-user system optimization, and a mathematic programming problem of IBFD channel allocation for three transmission modes, including Bidirectional Full-Duplex (BFD), Full-Duplex Relay (FDR) and the mixed of two is proposed. The exact optimal solutions are researched for two kinds of typical topology to find the capacity improvement of IBFD to Half-Duplex (HD). The results show that BFD multi-user system has an ideal capacity gain 100% in relative to HD, while FDR reveals a wide range of gain with 25% in the lowest. In addition, the gain of one dimensional chain of stations is found significantly superior to that of two-dimensional distribution.
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Received: 06 June 2017
Published: 12 December 2017
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| Fund:The National Natural Science Foundation of China (61401234) |
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Corresponding Authors:
WANG Wennai
E-mail: wangwn@njupt.edu.cn
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