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Performance analysis method of unmanned aerial vehicle relay system based on spatial modulation

A technology of spatial modulation and relay system, applied in the field of mobile communication, can solve the problems of no analysis method and difficulty in solving the probability density function, so as to achieve the effect of perfecting the channel model, saving time and cost, and avoiding simulation.

Active Publication Date: 2021-04-09
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

Since the effective signal-to-noise ratio of this type of system is a variable related to system parameters, its probability density function is difficult to solve, so the existing research has not given an analysis method, but the present invention solves this problem and verifies the analysis through simulation The correctness and effectiveness of the method

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  • Performance analysis method of unmanned aerial vehicle relay system based on spatial modulation
  • Performance analysis method of unmanned aerial vehicle relay system based on spatial modulation
  • Performance analysis method of unmanned aerial vehicle relay system based on spatial modulation

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with the accompanying drawings.

[0017] 1. System model

[0018] The UAV relay system model based on space modulation of the present invention is as follows: figure 2 As shown, the system consists of a source end, a destination end and a single-antenna UAV relay. The number of antennas at the source end and the destination end is N respectively. s and N d . The source end performs fixed gain amplification and forwarding through the UAV relay, and there is no direct link between the source end and the destination end. The system uses M-order quadrature amplitude modulation (Quadrature Amplitude Modulation, QAM) to spatially modulate the source, and the signal is transmitted under the Ricean channel without a direct link. According to the principle of spatial modulation, the source is spatially modulated, and the signal is transmitted under the Ricean channel without a direct link. In each transmis...

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Abstract

The invention discloses a performance analysis method for an unmanned aerial vehicle relay system based on spatial modulation, and the method comprises the steps: building a system model that the system passes through a Rician channel under the condition of no direct link for the unmanned aerial vehicle relay system based on spatial modulation; according to the definition of a joint boundary, dividing the bit error rate of a system into three different error conditions, giving a calculation method of the joint boundary of the bit error rate of the system according to a probability density function and a cumulative distribution function of channel information, and further giving a calculation method of an approximate bit error rate joint boundary of the system under a high signal-to-noise ratio; according to the approximate bit error rate joint boundary of the system under the high signal-to-noise ratio, giving the diversity degree of the system. Through simulation verification, the performance analysis method provided by the invention can effectively evaluate the bit error rate performance of the system.

Description

Technical field: [0001] The invention relates to a performance analysis method of a mobile communication system, in particular to a performance analysis method of an unmanned aerial vehicle relay system based on space modulation, which belongs to the field of mobile communication. Background technique: [0002] With the continuous growth of communication needs, the fifth generation (Fifth Generation, 5G) and beyond fifth generation (Beyond Fifth Generation, B5G) mobile communication systems strive to provide higher data transmission rates and service quality in congested areas, while improving coverage And reduce blind spots in existing networks. In order to meet the above requirements, research on UAV technology has become a hotspot. Its controllability of movement and flexibility of deployment make it an important part of the Internet of Things. In addition to UAV technology, Multi-Input Multi-Output (MIMO) technology can also meet the requirements of high data rate trans...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/0408H04B7/185H04B17/336H04B17/40
CPCH04B7/0408H04B7/18504H04B17/336H04B17/40
Inventor 谢明峰虞湘宾陈家锆黎宁朱秋明
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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