System and method for automatically detecting DVB (digital video broadcasting)-S signals and DVB-S2 signals

A DVB-S2, DVB-S technology, applied in the transmission system, digital transmission system, baseband system components, etc., can solve the problems of multiple resources, power consumption, consumption, etc., and achieve simplified circuit design, simple design, and low design cost. Cost and effect on system operating power consumption

Active Publication Date: 2014-01-22
SHANGHAI HIGH DEFINITION DIGITAL TECH IND
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, the DVB-S demodulation module and DVB-S2 demodulation module must work independently, requiring two sets of independent synchronization, equalization, and FEC modules to work at the same time, which will consume more resources and power consumption

Method used

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  • System and method for automatically detecting DVB (digital video broadcasting)-S signals and DVB-S2 signals
  • System and method for automatically detecting DVB (digital video broadcasting)-S signals and DVB-S2 signals
  • System and method for automatically detecting DVB (digital video broadcasting)-S signals and DVB-S2 signals

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Embodiment Construction

[0034] The implementation of the present invention will be illustrated by specific specific examples below, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0035] see Figure 1 to Figure 3 . It should be noted that the structures, proportions, sizes, etc. shown in the drawings attached to this specification are only used to match the content disclosed in the specification, for those who are familiar with this technology to understand and read, and are not used to limit the implementation of the present invention. Limiting conditions, so there is no technical substantive meaning, any modification of structure, change of proportional relationship or adjustment of size, without affecting the effect and purpose of the present invention, should still fall within the scope of the present invention. The disclosed technical content must be within the scope covered.

[0036] ...

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Abstract

The invention provides a system and a method for automatically detecting DVB-S signals and DVB-S2 signals. According to the system and the method, a mode control module is added in a demodulation module; whether received signals are DVB-S signals or DVB-S2 signals is detected and recognized automatically, and a corresponding signal type indication sign is given; and according to the signal type indication sign, one manner of a DVB-S processing manner and a DVB-S2 processing manner in the demodulation module is selected automatically, and received data are demodulated. Compared with a conventional scheme, the mode control module is added in the demodulation module, the design is simple, a mode of received signals is processed and judged automatically, the circuit design is simplified, resources are reused to the greatest extent, and the design cost and the system operation power consumption are reduced.

Description

technical field [0001] The invention relates to signal detection and recognition in the field of digital TV satellite broadcast reception. In particular, a method for automatically detecting and identifying the types of received DVB-S signals and DVB-S2 signals, which is applied in the demodulation module and relies on DVB-S2 frame detection and DVB-S FEC decoding characteristics. Background technique [0002] In recent years, wireless satellite broadcast communication has received extensive attention. DVB-S, as the mainstream satellite transmission standard of the first generation of digital satellite broadcasting, has been widely used in the world for more than ten years since it came out. Compared with DVB-S, DVBS-2 has attracted widespread attention because of its higher spectral efficiency, more advanced coding methods and system performance close to Shannon's limit. Therefore DVB-S2 is approved by ETSI as the second generation digital satellite broadcasting standard ...

Claims

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Application Information

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IPC IPC(8): H04N17/00H04L5/00H04L25/03
CPCY02D30/50
Inventor 柯仙胜郭焕丽戴永清杨孝思薛亚萍王亮郭继经梁伟强王峰管云峰孙军戴杨
Owner SHANGHAI HIGH DEFINITION DIGITAL TECH IND
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