Joint optimization method and device of transceiver in wirelessly powered MIMO relay system

Abstract

The invention provides a joint optimization method and device of a transceiver in a wirelessly powered MIMO relay system. The method comprises the following steps: acquiring a signal characteristic ofa signal to be transmitted, a first channel matrix, a second channel matrix, a third channel matrix, a first energy conversion rate and a second energy conversion rate; respectively decomposing the first channel matrix and the second channel matrix to obtain a first diagonal element and a second diagonal element; calculating according to the signal characteristic, the first diagonal element, thesecond diagonal element, the first energy conversion rate and the second energy conversion rate to obtain energy conversion efficiency corresponding to the system; and optimizing a time switching factor of the system and each precoding matrix according to the energy constraint condition with reference to the first channel matrix, the third channel matrix, the energy conversion rate, the signal characteristic and the nominal power and peak power of a source node. By adoption of the method, the communication process of each node of the system can be optimized, the adjustable degree of freedom ofthe precoding matrix is improved, and the signal transmission rate of the system is enhanced.

Description

technical field [0001] The present invention relates to the technical field of data communication, in particular, to a transceiver joint optimization method and device for a wireless power supply MIMO relay system. Background technique [0002] With the continuous development of data communication technology, MIMO (Multiple-Input Multiple-Output, Multiple-Input Multiple-Output) communication technology is more and more widely used. But for now, the existing MIMO relay communication system realizes communication by restricting the power of signal transmission based on the rated power. When the MIMO relay communication system performs signal communication through this communication method, the communication system The adjustable degree of freedom of the precoding matrix will be very small, resulting in low signal transmission efficiency of the corresponding system. Contents of the invention [0003] In order to overcome the above-mentioned deficiencies in the prior art, the...

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Problems solved by technology

But for now, the existing MIMO relay communication system realizes communication by restricting the power of signal transmission based on the rated power. When the MIMO relay communication system performs signal communication through this communication method, the communication system The adjustable degree of freedom of the precoding matrix will be very small, resulting in low signal transmission efficiency of the corresponding system

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