Simultaneous wireless information and power transfer method of cooperative relay network based on fountain code packet segmentation

Abstract

The invention discloses a simultaneous wireless information and power transfer method of a cooperative relay network based on fountain code packet segmentation. The method comprises the following five steps: a source node performs fountain coding for information and broadcasts fountain coding packets to a relay node and a destination node; the relay node monitors the own energy state or information decoding state; the relay node adaptively adjusts packet number segmentation parameters that are used for energy collection and data transmission according to the monitored own energy state value or information decoding state value; data that needs to be transmitted is forwarded to the destination node by using the energy collected by the relay node; and the destination node decodes the fountain coding packets separately from the source node and the relay node to restore signals. According to the simultaneous wireless information and power transfer method disclosed by the invention, the relay node can adaptively adjust the packet number segmentation parameters that are used for energy collection and data transmission according to the monitored own energy state value or information decoding state value, the problem of network energy limitation can be solved, and the transmission performance of the system can be improved.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a method for simultaneously transmitting wireless signal energy in a cooperative relay network based on fountain code data packet segmentation. Background technique [0002] Cooperative relay technology uses the mutual cooperation between nodes to form a virtual MIMO system, which can increase the system diversity gain, effectively resist multipath fading and improve the reliability of information transmission. [0003] In a cooperative relay network, the relay nodes often do not have a fixed energy supply, so that the network performance is limited by the limited energy of the relay nodes. Energy harvesting technology (Energy Harvesting, EH) provides a new efficient energy supply method for energy-constrained cooperative relay networks, which mainly use solar energy, wind energy, thermoelectric effect and radio frequency energy as energy sources. Amon...

AI Technical Summary

Problems solved by technology

[0005] Both TS and PS are hardware-based segmentation methods, which have high complexity, inflexible control, and consume extra energy

The TS mechanism requires synchronization in time, which is difficult to implement; the hardware circuit of the PS mechanism is complex to implement and consumes a lot of energy

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