Transmitting terminal antenna selection method based on SM system

A technology for antenna selection and transmitting antenna, which is applied in the field of communication anti-interference, can solve problems such as complex algorithms and unfavorable engineering implementation, and achieve the effect of low complexity, low feedback amount, and BER performance improvement

Inactive Publication Date: 2014-09-03
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Application Information

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Problems solved by technology

Some current antenna selection algorithms are too complex, which is not conducive to engineering implementation

Method used

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  • Transmitting terminal antenna selection method based on SM system
  • Transmitting terminal antenna selection method based on SM system
  • Transmitting terminal antenna selection method based on SM system

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Embodiment Construction

[0014] Specific embodiments of the present invention will be described below in conjunction with the accompanying drawings, so that those skilled in the art can better understand the present invention. It should be noted that in the following description, when detailed descriptions of known functions and designs may dilute the main content of the present invention, these descriptions are omitted here.

[0015] In order to describe the present invention better, the terms used in the technical solution of the present invention and the transmitter structure of the spatial modulation system are introduced first.

[0016] Spatial modulation: eg figure 1 As shown, b is the bit data to be transmitted, which can be regarded as a matrix of L×T, where L=log2(M)+log2(Mary) is the number of bits carried by an SM modulation symbol, and Mary is the quadrature amplitude Modulation (Quadrature Amplitude Modulation, QAM) order. It can be seen that the number of bits that can be carried by on...

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Abstract

The invention relates to a communication anti-interference technology, and particularly relates to an antenna selection technology based on spatial modulation. A method provided by the invention mainly comprises the steps: setting a candidate set P and a selected set S, wherein the set P initially includes serial numbers of all transmitting antennas, and the set S is initially empty; calculating the length of a vector of each column in a channel matrix H, putting a transmitting antenna corresponding to one column with the largest vector length into the selected set S, and removing the transmitting antenna from the candidate set P; calculating decision variables Q of each antenna in the candidate set P and all antennas in the selected set S, putting the antenna in the candidate set P, corresponding to the largest decision variable Q, into the selected set S, and removing the antenna from the candidate set P; and repeating the step until obtaining the selected set S meeting the requirement. The antenna selection technology has the beneficial effect that the BER performance can be greatly improved at lower complexity and feedback quantity. The antenna selection technology is especially suitable for antenna selection of spatial modulation.

Description

technical field [0001] The invention belongs to communication anti-jamming technology, and in particular relates to an antenna selection technology (Antenna Selection) based on spatial modulation (Spatial Modulation, SM). Background technique [0002] MIMO (Multiple Input Multiple Output) modulation technology is a high-speed transmission technology in a wireless environment. It configures more antenna units at the transmitting end and / or receiving end, combined with an advanced space-time coding modulation scheme, through free space The full utilization of degrees can bring additional diversity, multiplexing and beamforming gains. [0003] Recently, SM technology as a new MIMO modulation scheme has been proposed as a new modulation technique. The basic principle of this technology is to transmit information bits by activating different antennas and using the antenna index value for modulation. The essence of this transmission scheme is to exploit the independence of diffe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/06
Inventor 王顺顺肖悦王宇徐斌
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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