Dynamic carrier configuration method and on-board processing system for spray wave beam satellite communication

Abstract

The invention discloses a dynamic carrier configuration method and an on-board processing system for spray wave beam satellite communication. Firstly, based on an MF-TDMA (multiple frequency time division multiple access) system, the number of carriers and carrier rate are dynamically changed according to user requirements, and time and frequency resources are more flexibly distributed. A transmission frame format suitable for spray wave beam access is given according to communication characteristics of spray wave beams, different carrier configuration modes are adopted at different time slots, and the comprehensive efficiency of spray wave beam service access is improved. Secondly, a dynamic shunt circuit suitable for on-board implementation is given according to the dynamic carrier configuration modes of the spray wave beams and a transmission frame structure, and the system particularly comprises a multilevel shunt processing basic unit, a multi-channel selection and data formattingmodule and a multi-channel digital frequency conversion filtering module. The shunt method can effectively adapt to change of the carrier configuration modes at different time slots, implementation processes are simple, fewer resources are consumed, and the method is applicable to space-borne application.

Description

technical field [0001] The invention provides a dynamic carrier configuration method and an on-board processing system for beam-hopping satellite communication, which are used for high-efficiency service access in a beam-hopping environment and belong to the technical field of satellite communication. Background technique [0002] With the development of satellite communication technology, foreign countries have successively launched large-capacity, high-speed communication satellites to meet the growing demand for satellite broadband communication and broadcasting services. The large-capacity broadband communication satellite system is characterized by wide coverage and large capacity. It adopts technologies such as multi-spot beam and frequency multiplexing, and has high system capacity and spectrum utilization. The current multi-spot beam satellite communication system has various The frequency reuse and radio frequency power of beams are all allocated in a fixed way. Ho...

AI Technical Summary

Problems solved by technology

[0006] The problem solved by the technology of the present invention is: facing the beam-hopping satellite communication application of on-board processing, a dynamic carrier configuration method and an on-board processing system are provided. The dynamic carrier configuration method can change the coverage area of ​​each beam according to the terminals and The service characteristics dynamically change the number of carriers and the carrier rate, more flexibly allocate time and frequency resources, and improve the flexibility of service access as well as the performance and capacity of the system; the multi-carrier and multi-rate processing method used by the on-board processing system can quickly It is well adapted to the change of carrier configuration mode under different time slots, the implementation process is simple, the resource consumption is less, and it is suitable for spaceborne applications

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