Power allocation method for receiver space modulation system

A space modulation and allocation method technology, applied in the field of multiple input and multiple output technology, can solve problems such as synchronization between antennas, multiple radio frequency links, channel interference, etc., and achieve the effect of large BER performance improvement and excellent performance

Inactive Publication Date: 2018-11-16
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Application Information

AI Technical Summary

Problems solved by technology

Multiple Input Multiple Output (MIMO) technology can achieve broadband wireless communication with higher spectrum efficiency, but in practical applications, there are also problems such as inter-channel interference, inter-antenna synchronization, multiple radio frequency links, and high system power consumption.

Method used

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  • Power allocation method for receiver space modulation system
  • Power allocation method for receiver space modulation system
  • Power allocation method for receiver space modulation system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0042] like figure 1 As shown, this example briefly shows the basic framework of the power allocation-assisted spatial modulation transmission structure at the receiving end. It can be seen that compared with the traditional spatial modulation system model at the receiving end, this model adds a power allocation module at the transmitting end. The limited feedback link is used to adjust the power allocation factor to cope with time-varying channel fading, and this structure can effectively improve the transmission rate of the system.

[0043] This example is a space-modulated MIMO communication system at the receiving end assisted by power allocation of 4 transmissions and 2 receptions. The modulation method is BPSK, and the modulation symbol codebook is S signal ={1-1}, the space symbol codebook is S spatial ={(1,0) T ,(0,1) T}.

[0044] Step 1. Calculate all possible error vectors as:

[0045] w={(2,0) T ,(-2,0) T ,(0,2) T ,(0,-2) T ,(1,1) T ,(1,-1) T ,(-1,-1) T ...

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Abstract

The invention belongs to the technical field of communication jamming resistance, and particularly relates to a power allocation method for a receiver space modulation system. According to the method,a power allocation algorithm is applied to the receiver space modulation system; compared with a traditional receiver space modulation system model, the scheme has the main advantage that a power allocation module is added at a transmitter by means a limited feedback link, the transmitting power is reasonably allocated by means of current channel information, and therefore the performance can beoptimal; and on the condition that the transmitting power is the same, the method can achieve great BER performance improvement compared with the traditional receiver space modulation system.

Description

technical field [0001] The invention belongs to the technical field of communication anti-jamming, and relates to a receiver spatial modulation (Recieve Spatial Modulation, RSM) technology, a power allocation (Power Allocation, PA) technology, and a multiple input multiple output (Multiple Input Multiple Output, MIMO) technology. Background technique [0002] With the rapid growth of mobile users' demand for communication, there is an urgent need for broadband communication technology with higher data rate, higher spectrum efficiency and lower implementation complexity to meet the needs of wireless communication. Multiple Input Multiple Output (MIMO) technology can achieve broadband wireless communication with higher spectrum efficiency, but in practical applications, there are also problems such as inter-channel interference, inter-antenna synchronization, multiple radio frequency links, and high system power consumption. . As a new multi-antenna technology, spatial modula...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W52/42H04W72/04
CPCH04W52/42H04W72/0473
Inventor 朱静杨平肖悦
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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