Combined resource distribution method based on energy acquisition cooperation communication system
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A technology for energy collection and resource allocation, applied in network traffic/resource management, wireless communication, energy consumption reduction, etc.
Active Publication Date: 2017-01-04
GUANGDONG KUICHUANG TECH DEV CO LTD
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[0011] In view of the problems that the existing cooperative communication system resource allocation methods do not fully consider the performance improvement brought about by energy harvesting factors, the joint relay selection and power allocation under the condition of energy causal constraints, the practical application requirements of engineering, and the practical application of low-complexity algorithms, etc., The present invention proposes a jo
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Embodiment 1
[0132] A joint resource allocation method based on an energy harvesting cooperative communication system, comprising:
[0133] Step 1: System scenario analysis, problem resolution;
[0134] Step 1.1: System scenario analysis;
[0135] The present invention is aimed at a special application scene, comes from practical application, and the scene setting is meticulous and reasonable, and has practical guiding significance. Consider a multi-relay cooperative communication scenario based on energy harvesting. In the scenario, there is a signal source Source (abbreviated as S), and M relay station Relays for energy harvesting (abbreviated as R i ,i=1,2,...,M) and a target communication terminal Destination (abbreviated as D), there is no direct path between the signal source S and the target communication terminal D, it must pass through the energy harvesting relay station R i Cooperative forwarding, relay station R i Select the working mode of amplification and forwarding, a tra...
Embodiment 2
[0173] P1 is non causal CSI / ESI (the current state and future state of the known channel and energy harvesting), which can store the upper bound of energy infinitely. If the constraints in the optimization problem P1 are modified, l=N is retained, that is, the constraints in P1 are modified condition for Then the optimization problem P1 with high complexity can be turned into a generalized assignment problem P2 (generalized assignment problem, GAP).
[0174] P 2 : m a x x i , j , P i , ...
Embodiment 3
[0192] if ignored this restriction. Problem P1 becomes the traditional instantaneous information-based relay selection problem P3, which 1601 uses as a lower bound to compare performance characteristics. We use a greedy strategy here to get a better lower bound.
[0193] P 3 : m a x x i , j , P i , j r R ¯ = ...
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Abstract
The invention discloses a combined resource distribution method based on an energy acquisition cooperation communication system and belongs to the cooperation communication technology field. The method comprises steps of system scene analysis and problem resolution; system mathematics model establishment and optimal solution calculation on the basis of an optimization method. According to the method, for the special application scene from a practical application, compared with a relay selection method in the prior art, problems of high complexity and high network cost existing in relays in the prior art are solved, a single relay node selection algorithm and a corresponding resource distribution algorithm are searched from an easy-practical-application angle, single relay cooperation communication on the basis of energy acquisition is considered, a throughout expression under the scene is derived, optimal relay selection and power distribution are considered in a combined mode, and the method has great guiding meaning.
Description
technical field [0001] The invention belongs to the technical field of cooperative communication, and more specifically relates to a joint resource allocation method based on an energy harvesting cooperative communication system. Background technique [0002] Wireless networking has changed rapidly over the past decade, incorporating many advanced technologies. Among them, the resource allocation problem of the cooperative relay strategy has become a focus of research in the wireless communication academic and industrial circles. At the same time, it is recognized as a major breakthrough in wireless communication because it can improve the performance of wireless communication systems by significantly increasing the robustness of the system and reducing the potential energy loss. Cooperative communication can utilize multi-user systems to achieve distributed space diversity without installing multiple antennas on each node. The information of other users is relayed by mult...
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