Antenna selection method for spatial phase modulation

A space phase and phase rotation technology, which is applied in the field of multiple input multiple output modulation technology, can solve the problems of combining the transmitting end and the receiving end, high complexity of antenna selection, etc., and achieve the effect of BER performance improvement

Inactive Publication Date: 2015-10-21
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

[0006] The present invention provides a joint antenna selection method for transmitting and receiving ends for spatial phase modulation, which is used to solve the shortcomings of high antenna selection complexity and inability to perform joint antenna selection at the transmitting end and receiving end in the prior art

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  • Antenna selection method for spatial phase modulation
  • Antenna selection method for spatial phase modulation
  • Antenna selection method for spatial phase modulation

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Embodiment Construction

[0027] The technical solution of the present invention will be described in detail below in combination with the embodiments and the accompanying drawings.

[0028] Such as figure 2 As shown, there are four transmitting antennas, and the modulation symbol is BPSK.

[0029] Step 1. The receiving end obtains N according to the estimation t ×N r The channel matrix H obtains the precoding phase rotation matrix θ, where, N t is the number of transmitting antennas, N r is the number of receiving antennas, the phase rotation matrix θ is a diagonal matrix, and θ j Indicates the jth diagonal element, that is, the phase value of the symbol sent on the jth transmit antenna that needs to be rotated;

[0030] Step 2, determine the number of transmitting antennas;

[0031] Step 3. Calculate N t Precoding vector θ′ when ≠2 opt ,Specifically:

[0032] Step 31, according to the formula Calculate the minimum distance d between any two points in the constellation diagram min (H,θ 0...

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Abstract

The invention belongs to the technical field of communication anti-jamming, in particular relates to the spatial modulation (SM) technology, a transmit precoding technology, a phase rotation (PR) technology, phase shifting keying (PSK), an antenna selection technology and multiple input multiple output (MIMO) modulation technology. A receiving end selecting a receiving antenna set and a transmitting antenna set according to an algorithm proposed by the invention according to channel information obtained through channel estimation, and feeds back the transmitting antenna set to the transmitting end; the transmitting end performs the spatial modulation mapping on the transmit data according to the transmitting antenna set fed back by the receiving end. Through the adoption of the method disclosed by the invention, the minimum Euclidean distance between constellation points is increased, the BER (Bit Error Rate) performance of the system is obviously improved under the condition of introducing tiny feedback quantity and increasing small complexity.

Description

technical field [0001] The present invention belongs to the technical field of communication anti-jamming, and in particular relates to spatial modulation (Spatial Modulation, SM) technology, transmitting end precoding technology (Transmit Precoding), phase rotation technology (Phase Rotation, PR), phase shift keying (Phase Shifting Keying, PSK), antenna selection technology (Antenna Selection) and multiple input multiple output (Multiple Input Multiple Output, MIMO) modulation technology. Background technique [0002] MIMO modulation technology is a high-speed transmission technology in a wireless environment. This technology configures more wireless units at the transmitting end and / or receiving end, and combines advanced space-time coding modulation schemes to fully utilize the degree of freedom of space. , can bring additional diversity gain and multiplexing gain, thereby improving the communication reliability and efficiency of the communication system. [0003] Recent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/20H04L27/34H04B7/06
CPCH04L27/20H04B7/06H04L27/34
Inventor 杨平王宇肖悦李少谦
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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