Optimal power allocation method for double-hop full-duplex df relay with jointly limited total power and single node power
A technology of optimal power and node power, applied in the field of mobile communication, can solve the problem of wasting wireless resources and so on
Active Publication Date: 2018-03-16
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]
[0032] where Ω i,j is the mean s...
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An optimal power allocation method for dual-hop full-duplex DF relays with joint limitations on total power and single node power, relates to the field of mobile communication technology. The present invention is proposed to address the joint limitation problem of total power and single node power in a double-hop full-duplex decode-and-forward relay (Decode-and-Forward, DF) system, so that the end-to-end interruption performance of the system can be optimized. When the total transmit power of a node is limited to PTotal and the transmit power of a single node is limited to PMax, the optimal power allocation objective function of the two-hop full-duplex DF relay system is established. f ( p 0 , p 1 ) = - ( γ th k 0,1 p 0 + γ th k 1,2 p 1 ) - ln M ( p 0 , p 1 ) , And optimize it to find p0 and p1 that maximize this equation and satisfy its constraints; complete the optimal power allocation. The outage probability of the system when using the optimal power allocation algorithm is significantly lower than when using the equal power allocation algorithm.
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