MIMO relay antenna design method

Abstract

The invention discloses an MIMO relay antenna design method, and relates to a relay antenna design method by considering hardware imperfectness and power constraint and optimizing the SNDR. Two scenes, namely the total power constraint of a relay antenna and the power constraint of a single antenna, are included; information is sent from a source node, and transmitted to a relay node through a channel; then, the relay node transmits the information to a destination node through a channel by antenna amplification and forwarding, wherein when being sent by the source node and the relay node, theinformation can be influenced by the hardware imperfectness factor, so that corresponding damage distortion is caused; in the total power constraint scene, on the basis of the matrix vectorization, the SNDR optimization problem of an MIMO relay system is equivalently converted into the general Rayleigh entropy form; furthermore, an antenna matrix vector type closed-form solution when the SNDR ismaximum is obtained; in the power constraint scene of the single antenna, on the basis of rank decomposition and randomization, an optimization problem numerical value solving algorithm taking the SNDR as a target function is given; and thus, performance improvement of a network system is realized to a certain degree.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a relay antenna design method based on signal-to-noise-distortion ratio optimization in consideration of hardware imperfection and power constraints. Background technique [0002] With the development of wireless communication network technology and the extensive development of wireless services, the performance of network system transmission has always been one of the core issues concerned by the academic circles and the industry. As a double-hop relay transmission technology in cooperative transmission, because it is easy to implement and helps to transmit signal information, it has been deeply applied in practice to improve system performance and effectively reduce costs. [0003] In actual wireless transmission, relevant studies have shown that transceiver hardware is often affected by imperfect factors such as high-power amplifier amplitude nonlinearity, phase noise, an...

AI Technical Summary

Problems solved by technology

The few research models considering relay transmission are all based on the assumption that the relay system is configured with a single antenna, and the existing results show that the imperfect node transceiver hardware will have a negative effect on the performance of the network communication system

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