一种采用复合中继激励的协作下行传输机制

doi:10.11999/JEIT160799

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Abstract

In order to overcome the uncertainty of the reward with long-term relay incentive strategy and the degradation of resource utilization efficiency incurred by the short-term incentive scheme, a Cooperative Compound Relay Incentive (CCRI) mechanism is proposed for cooperative downlink communication system. By exploiting the bottleneck resulted from the imbalance of links’ capability, the rate difference that the first hop exceeds the second is provided as an instant reward for the relay node’s own data transmission. In addition, by taking into account the situations where the short-term reward is insufficient, excessive or the bottleneck exists in the first hop in such a case that the short-term incentive scheme becomes unavailable, a proportional fair based long-term incentive is employed as supplementary, with which the relay node’s scheduling weight is further adjusted. Simulation results show that the proposed scheme can provide rational reward to the relay and achieve improvements of system’s spectral efficiency and lifetime, as well as relay’s energy efficiency.

Key words： Cooperative communication Relay incentive User scheduling Energy efficiency

Received: 26 July 2016 Published: 28 February 2017

PACS:

TN929.5

Fund:

The National Natural Science Foundation of China (61401354, 61501285, 61102057), The 111 Project (B08038)

Corresponding Authors: LI Zhao E-mail: zli@xidian.edu.cn

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Cite this article:

LI Zhao,CAI Shenjin. A Compound Relay Incentive Based Downlink Cooperative Transmission Mechanism[J]. JEIT, 2017, 39(6): 1291-1297.

URL:

http://jeit.ie.ac.cn/EN/10.11999/JEIT160799 OR http://jeit.ie.ac.cn/EN/Y2017/V39/I6/1291

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