Optimal power distribution method of double-jump full-duplex DF (Decode-and-Forward) relay for total power and single node power combination limitation
A technology of optimal power and node power, applied in the field of mobile communication, can solve problems such as wasting wireless resources
Active Publication Date: 2015-04-29
HARBIN INST OF TECH
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Although the multiple input multiple output (MIMO) technology has greatly improved the performance and capacity of the wireless communication system, and has developed rapidly in recent years, it has become one of the core technologies of the new generation of wireless communication, but the existing In the communication system, regardless of frequency division duplex (Frequency Division Duplex, FDD) mode or time division duplex (Time Division Duplex, TDD) mode, by occupying different resources to achieve uplink and downlink communication to avoid interference between uplink and downlink communications , which obviously wastes half of the wireless resources
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[0029] Specific implementation mode one: as Figures 1 to 5 As shown, this embodiment provides an optimal power allocation method for a double-hop full-duplex DF relay that is jointly limited by the total power and the power of a single node. The method is aimed at the system model of the double-hop full-duplex DF relay system like figure 1 As shown, the detailed optimal power allocation flow chart is as follows Figure 2 to Figure 5 Shown:
[0030] The double-hop full-duplex DF relay system consists of a source node (R 0 ), the relay node (R 1 ) and the destination node (R 2 )composition. The channel through which the signal propagates is a Rayleigh fading channel. assuming p i for node R i (i=0,1) transmit signal power, when the free space propagation loss is not considered, the relay node R j (j=1,2) received from relay node R i (i=0,1) the average signal-to-noise ratio of the signal after the fading channel for:
[0031] γ ...
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The invention discloses an optimal power distribution method of a double-jump full-duplex DF (Decode-and-Forward) relay for total power and single node power combination limitation, and relates to the technical field of mobile communication. The method is proposed for the total power and single node power combination limitation of a double-jump full-duplex DF relay system, so that the end-to-end interruption performance of the system is optimal. The method comprises the steps that when total transmitting power of nodes is limited as PTotal and transmitting power of each node is limited as PMax, an optimal power distribution objective function (as shown in the specification) of the double-jump full-duplex DF relay system is established, and optimization revolving is performed for the optimal power distribution objective function; p0 and p1 for allowing the function to be maximum and meeting a constraint condition of the function are obtained; and optimal power distribution is accomplished. The interruption probability of the system when an optimal power distribution algorithm is used is obviously less than that of the system when an equipower allocation algorithm is used.
Description
technical field [0001] The invention relates to a double-hop full-duplex DF relay optimal power allocation method, and relates to the technical field of mobile communication. Background technique [0002] The fifth generation of mobile communication will provide users with higher data transmission rate and better service quality. However, to achieve higher rates and greater capacity on limited spectrum resources, wireless transmission technologies with extremely high spectrum efficiency must be used. Although the multiple input multiple output (MIMO) technology has greatly improved the performance and capacity of the wireless communication system, and has developed rapidly in recent years, it has become one of the core technologies of the new generation of wireless communication, but the existing In the communication system, regardless of frequency division duplex (Frequency Division Duplex, FDD) mode or time division duplex (Time Division Duplex, TDD) mode, by occupying di...
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IPC IPC(8): H04W72/08H04W72/54
CPCH04W72/0473Y02D30/70
Inventor 孟维晓陈雷韩帅
Owner HARBIN INST OF TECH