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Multiservice mixed transmission method and system based on multi-adjusting frequency chirp spread spectrum (CSS)

A hybrid transmission and frequency modulation technology, which is applied in phase modulation carrier systems, baseband system components, shaping networks in transmitters/receivers, etc., can solve the waste of wireless communication resources, flexibility limitations, and service categories that cannot be physically controlled. Identify and classify problems at the upper layer to achieve the effect of simplifying the upper layer scheduling algorithm

Inactive Publication Date: 2011-02-02
HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
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Problems solved by technology

[0012] The technical problem solved by the present invention is to provide a multi-service hybrid transmission method and system based on multi-frequency chirp spread spectrum, which overcomes the inability to identify and classify service categories at the physical layer during multi-service hybrid transmission in the prior art , waste of wireless communication resources, and technical issues that limit flexibility

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  • Multiservice mixed transmission method and system based on multi-adjusting frequency chirp spread spectrum (CSS)
  • Multiservice mixed transmission method and system based on multi-adjusting frequency chirp spread spectrum (CSS)
  • Multiservice mixed transmission method and system based on multi-adjusting frequency chirp spread spectrum (CSS)

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Embodiment Construction

[0037] The technical solutions of the present invention will be further described below in conjunction with specific embodiments.

[0038] Such as figure 1 As shown, the specific embodiment of the present invention is: provide a kind of multi-service hybrid transmission method based on multi-frequency chirp spread spectrum, comprising the following steps:

[0039] Step 100: baseband modulation, that is, perform baseband modulation on the classified data to be transmitted. In this step, for data transmitted in a mixed manner of multiple services, the data is first classified by service. In this method, assuming that the system can indicate M types of services, when a certain terminal transmits N types of service data, it first classifies the N types of service data according to services. Then baseband modulation is performed on the classified data to be transmitted. In a specific embodiment of the present invention, the baseband modulation is performed on the classified data ...

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Abstract

The invention relates to multiservice mixed transmission method and system based on a multi-adjusting frequency chirp spread spectrum (CSS). The multiservice mixed transmission method based on a multi-adjusting frequency CSS comprises the steps of baseband modulation, CSS, fractional Fourier transform, transform domain filter, inverse frequency sweeping and demodulation. The multiservice mixed transmission method and system based on a multi-adjusting frequency CSS carry out multiservice mixed transmission by adopting multi-adjusting frequency CSS and can realize recognition and separation of a multiservice mode at a physical layer and simplify an upper scheduling algorithm; and the difference of different services is embodied at the physical layer, particularly, the transmission quality of different services can be flexibly adjusted by controlling parameters. The complex problem of multiservice mixture is simplified into the interference suppression problem between transform domain transmission multiplexing / multiaddress of a single service and the service, and different service signs are allowed to be asynchronously innitiated without demanding a strict time sequence relation.

Description

technical field [0001] The present invention relates to a multi-service mixed transmission method and system, in particular to a multi-service mixed transmission method and system based on multi-frequency chirp spread spectrum. Background technique [0002] With the development and popularization of wireless communication, the diversity and difference of services are becoming more and more obvious. How to use scarce wireless communication resources to better meet the transmission requirements for diverse services is one of the key issues to be solved in wireless communication. At present, the general method to solve the problem of multi-service transmission mainly relies on upper-layer resource scheduling strategies, such as frequency spectrum and time slot allocation, data frame structure design, and service flow control. These existing technologies generally have the following characteristics: [0003] The service category is reflected in the upper layer: service dat...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L25/03H04L27/20
Inventor 张钦宇肇启明王野吴绍华张霆廷
Owner HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
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