MIMO relay selection method for selecting antenna based on network lifetime threshold
A life cycle and antenna technology, applied in diversity/multi-antenna systems, radio transmission systems, location diversity, etc., can solve problems such as unbalanced network load, failure to consider the principle of fairness, unfair energy consumption of nodes, etc.
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[0024] The main steps of the embodiment are as follows:
[0025] Step 1: At the relay selection time j, the received SNR at the destination node is greater than the SNR threshold r th The relay nodes of are selected into the candidate relay node set Ω, and the remaining energy of all relay nodes in the set is obtained. Step 2: For each relay node in the candidate relay node set Ω, taking relay node i as an example:
[0026] (1) Calculate the communication duration when the antenna m of the i-th relay node is selected respectively 1≤m≤N; when When , the antenna m is not selected; when When , the antenna m is selected into a selected antenna set Ψ of the relay node 1i ; Indicates the transmission power of the antenna m of the i-th relay node at the relay selection time j.
[0027] (2) For Ψ 1i Any two antennas in , respectively calculate and choose Ψ 1i Antenna a in 1 and antenna b 1 communication time when , the antenna a 1 and antenna b 1 Composed of antenn...
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