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Satellite communication link supportable system and optimization method thereof

A satellite communication and supporting technology, which is applied in the field of satellite communication, can solve the problems of difficult coexistence of large and small carriers and low transponder power utilization rate, and achieve the effect of improving power utilization rate, avoiding unevenness, and effectively utilizing

Inactive Publication Date: 2009-12-23
BEIHANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the problems of difficult coexistence of large and small carriers and low transponder power utilization in traditional satellite communications, to propose a link supportability system for satellite communications, and to propose a heuristic optimization method for this system

Method used

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  • Satellite communication link supportable system and optimization method thereof
  • Satellite communication link supportable system and optimization method thereof
  • Satellite communication link supportable system and optimization method thereof

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Embodiment 1

[0137] Embodiment 1: Analyze the link supportability of the satellite communication system with the link supportability system and optimization method proposed by the present invention

[0138] The link supportability of the digital channelized satellite communication system is analyzed by using the digital channelized satellite communication link supportability system and its optimization method of the present invention, and the results are shown in Table 4.

[0139] Table 4 The results obtained by analyzing the link supportability of the satellite communication link supportability system and its optimization method

[0140] link type

[0141] It can be seen from Table 4 that in all three links, the required uplink EIRP of the transmitting terminal is smaller than its maximum EIRP, so all of them can be supported by the system. In this case, the link support rate reaches 16 / 16, that is to say, the link supportability system proposed by the present invention solves t...

Embodiment 2

[0142] Embodiment 2: Using the link supportability system and method proposed by the present invention to analyze the power utilization rate of the transponder in the satellite system.

[0143] For digital channelized satellite communication systems, the existing link supportability system is the p-norm system shown in equation (12)

[0144] minimize Σ i = 1 M y i p , p≥1

[0145] (12)

[0146] subject to y i / b i f i ( Y ) ≥ c i , ...

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Abstract

The invention discloses a satellite communication link supportable system and an optimization method thereof. The system consists of five modules of a maximum value selection module, a logarithmic barrier processing module, an adjustable attenuation module, a penalty function processing module and an adjustable amplifier module. The optimization method firstly carries out initialization, then sequentially selects an initial neighbourhood, obtains a new point in the initial neighbourhood, carries out local research and finally carries out neighborhood change. The application of the link supportable system and the optimization method thereof can effectively solve the difficult problem of co-exist of big and small carriers in a multi-carrier satellite communication system, improves the capacity of the system and the power utilization rate of a transponder and has very important theoretical guiding significance and engineering practical value for the design of the satellite communication system.

Description

technical field [0001] The invention belongs to the technical field of satellite communication, and in particular relates to a satellite communication link supportability system and an optimization method thereof. Background technique [0002] Nowadays, many satellite communication systems adopt a multi-beam frequency-division multiple access (FDMA for short) communication scheme. Under this communication system, the system can be compatible with various types of ground terminals, including airborne, shipborne, vehicle-mounted and even handheld terminal equipment. For satellite communication links where small-caliber terminals such as hand-held terminals are located, satellite power resources are more valuable than bandwidth resources; at the same time, in this multi-carrier satellite system, the power amplifier of the satellite transponder needs to amplify many times at the same time. carrier. Due to the non-linearity of the power amplifier, when multi-carrier signals pas...

Claims

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Application Information

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IPC IPC(8): H04B7/02H04B7/185
Inventor 刘红英阳志明
Owner BEIHANG UNIV
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