Dynamic Time Allocation Strategy of Opportunity Cooperative Relay System for Optimizing Transmission Performance

doi:10.13190/j.jbupt.2019-007

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2019, Vol. 42 ›› Issue (5): 36-41,99.doi: 10.13190/j.jbupt.2019-007

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Dynamic Time Allocation Strategy of Opportunity Cooperative Relay System for Optimizing Transmission Performance

LI Tao-shen^1,2, NING Qian-li¹, WANG Zhe¹

1. School of Computer, Electronics and Information, Guangxi University, Nanning 530004, China;
2. School of Information Engineering, Nanning University, Nanning 530200, China

Received:2019-01-16 Online:2019-10-28 Published:2019-11-25

Abstract

Abstract: A dynamic time allocation strategy for opportunistic cooperative relay system was proposed to optimize the transmission and extend the life cycle of energy-constrained nodes in energy harvesting wireless network. The relationship between outage probability and time distribution coefficient was derived under the constraint of satisfying the minimum transmission rate of the system. By reducing the system outage probability, the time allocation coefficient was optimized and the expression of the system throughput and energy efficiency was deduced. A suboptimal iteration time allocation algorithm was designed to solve the problem. The simulation results show that the proposed strategy is of higher system throughput and energy efficiency under the non-ideal channel condition, which will optimize the transmission performance and improve the reliability of the system.

Key words: energy harvesting wireless network, simultaneous wireless information and power transfer, opportunity cooperative relay, dynamic time allocation strategy, outage probability

CLC Number:

TN393

LI Tao-shen, NING Qian-li, WANG Zhe. Dynamic Time Allocation Strategy of Opportunity Cooperative Relay System for Optimizing Transmission Performance[J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2019, 42(5): 36-41,99.

References

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Dynamic Time Allocation Strategy of Opportunity Cooperative Relay System for Optimizing Transmission Performance

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