Power distribution method of two-way multi-hop network based on physical layer network coding

Abstract

The invention discloses a power distribution method of a two-way multi-hop network based on physical layer network coding, which is characterized by comprising the following steps: S1, establishing a two-way multi-hop network with N nodes; S2, utilizing a Frisk formula (the formula is shown in the specification) to calculate propagation loss of each link; S3, calculating a system parameter w according to a formula (the formula is shown in the specification); S4, setting the total transmitting power of a system as PT; and S5, according to formulas (the formulas are shown in the specification),determining the transmitting power PN of each node. The power distribution method has the beneficial effects that due to the adoption of the method, the optimum transmitting power value of each node can be obtained, the nodes in the network carries out power control according to the obtained optimum transmitting power value, and under the condition that the total power of the system is constant, theinterrupt probability of the system can be minimum, so that the stability and the reliability of the system are improved.

Description

technical field The invention belongs to the power control technology in the field of communication and information, in particular, it is a power distribution method of a bidirectional multi-hop network based on physical layer network coding. Background technique The next generation of wireless networks will provide high data rate transmission services. As one of the most promising structures, multi-hop relay networks have attracted much attention. Compared with the traditional network structure, the multi-hop relay network can provide greater system capacity, wider coverage, and use simpler routing algorithms and consume less transmit power. However, due to the relay transmission in the half-duplex mode, the spectrum utilization rate of the system decreases. In order to overcome the defect of the decrease of spectrum utilization rate, a network coding protocol is proposed. Taking a three-node relay system as an example, the scheme using network coding only needs three t...

AI Technical Summary

Problems solved by technology

Although various power allocation schemes based on the minimum bit error rate or the minimum outage probability have been proposed in the prior art, they only consider the case of one-way transmission