MIMO relay antenna design method

A design method and multi-output technology, applied in diversity/multi-antenna systems, transmission monitoring, transmission systems, etc., can solve problems such as imperfect node transceiver hardware and negative effects on network communication system performance

Active Publication Date: 2018-06-15
TONGJI UNIV
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  • Description
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  • Application Information

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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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Embodiment Construction

[0046] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is carried out on the premise of the technical solution of the present invention, and detailed implementation and specific operation process are given, but the protection scope of the present invention is not limited to the following embodiments.

[0047] The present invention relates to a multiple-input-multiple-output (MIMO) expand-and-forward (AF) relay system antenna design method based on signal-to-noise-distortion ratio (SNDR) optimization considering hardware imperfections and power constraints, including relay antenna total power constraints and A single antenna power constrains both scenarios. The information is transmitted from the source node to the relay node through the channel, and the relay node is then enlarged and forwarded through the antenna and transmitted to the destination node through the channel. When the...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/026H04B7/0456H04B17/336H04B17/391
CPCH04B7/026H04B7/0456H04B7/0469H04B17/336H04B17/391
Inventor 王睿吴俊程松林
Owner TONGJI UNIV
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