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Space-shift keying method based on time-space matrix constellation diagram

A space-shift keying and communication method technology, applied in space transmit diversity, error prevention/detection through diversity reception, transmission system, etc., can solve problems such as inability to obtain transmit diversity, achieve excellent bit error performance, and reduce system complexity The effect of increasing the degree of design flexibility

Active Publication Date: 2015-12-02
RESEARCH INSTITUTE OF TSINGHUA UNIVERSITY IN SHENZHEN
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Problems solved by technology

Studies have shown that space shift keying can only achieve receive diversity, but not transmit diversity

Method used

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  • Space-shift keying method based on time-space matrix constellation diagram
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  • Space-shift keying method based on time-space matrix constellation diagram

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Embodiment Construction

[0032] refer to figure 1 Shown is a schematic structural diagram of a preferred embodiment of the communication system. The communication system 2 may be a wireless communication system. The communication system 2 includes a transmitting device 20 , a receiving device 22 , a transmitting antenna 200 and a receiving antenna 220 .

[0033] Wherein, the transmitting device 20 transmits data to the receiving antenna 220 of the receiving device 22 through the transmitting antenna 200 , so that wireless data transmission can be realized between the transmitting device 20 and the receiving device 22 . It should be noted that the transmitting device 20 may be equipped with two or more transmitting antennas 200 , and the receiving device 22 may be equipped with one or more receiving antennas 220 . In this preferred embodiment, the communication system 2 includes N t root transmitting antenna 200 and N r A wireless communication system with root receiving antennas 220, wherein, N t...

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Abstract

A space-shift keying method based on a time-space matrix constellation diagram includes that an emitter of a communication system establishes a time-space matrix constellation diagram off-line, the emitter of the communication system finds out the position of an emission antenna in the time-space matrix and establishes the time-space matrix constellation diagram by determining the sending value of the position, and the information bits input by the emitter are divided into groups according to the constructed time-space matrix constellation diagram. The information bits in each group are mapped to one time-space matrix in the time-space matrix constellation diagram for signal emission. The reception apparatus of the communication system employs maximum-likelihood demodulation, and receives signals sent by the emitter. The space-shift keying system obtains emission diversity gain, and the performance of the system is improved. The limitation that the number of the emission antennas of a conventional space-shift keying system has to be the power of 2 is overcome, and the design flexibility of the system is improved. The transmission characteristics of a single chain of the conventional space-shift keying system are retained, and the complexity of a multi-antenna system is reduced.

Description

technical field [0001] The invention belongs to the field of wireless communication, in particular to a space-shift keying communication method based on a space-time matrix constellation diagram. Background technique [0002] With the continuous development of communication technology, limited spectrum resources have gradually become the bottleneck restricting wireless communication systems. Using multiple-input multiple-output (Multiple-Input Multiple-Output, MIMO) wireless communication system is an effective way to improve the spectral efficiency of wireless communication. Among many MIMO technologies, space shift keying (SpaceShiftKeying, SSK) is a low-complexity, high-energy-efficiency MIMO technology proposed recently. The core idea is to use the position of the antenna to transmit information, and at any time slot, one of the multiple antennas is excited to transmit information, avoiding synchronization between antennas and interference between the same channels; at ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/34H04L1/06H04B7/06
CPCH04B7/0667H04L1/0612H04L27/34
Inventor 周志强葛宁余晓华
Owner RESEARCH INSTITUTE OF TSINGHUA UNIVERSITY IN SHENZHEN
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