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Signal bandwidth adaptive recognition method and signal bandwidth adaptive recognition system

A signal bandwidth and signal identification technology, applied in baseband system components, transmission systems, digital transmission systems, etc., can solve the problem that bandwidth standards cannot achieve interoperability, and achieve the effect of simple operation

Active Publication Date: 2013-01-16
HYTERA COMM CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0012] The technical problem to be solved by the present invention is to provide an adaptive identification method and system for communication between different bandwidth standards based on the defect that intercommunication cannot be realized between different bandwidth standards in the prior art

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  • Signal bandwidth adaptive recognition method and signal bandwidth adaptive recognition system
  • Signal bandwidth adaptive recognition method and signal bandwidth adaptive recognition system
  • Signal bandwidth adaptive recognition method and signal bandwidth adaptive recognition system

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Embodiment Construction

[0032] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0033] figure 1 It is a schematic diagram of a processing process of a signal bandwidth adaptive identification method according to an embodiment of the present invention. This method is applied to wireless communication devices, such as but not limited to walkie-talkies, such as figure 1 As shown, method 100 begins at step 102 .

[0034] Subsequently, enter next step 104, carry out intermediate frequency digital processing to the received signal, output I / Q (In-phase / Quadrature, in-phase / quadrature) signal;

[0035] Then, enter the next step 106, identify the signal bandwidth of the I / Q signal ...

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Abstract

The invention relates to a signal bandwidth adaptive recognition method, which comprises the following steps: conducting mid-frequency digital processing to received signals and outputting I / O signals; and recognizing the signal bandwidth of the I / O signals according to at least two signal recognition templates, and outputting synchronized signal flow after successful recognition. The invention additionally relates to a signal bandwidth adaptive recognition system. The invention is compatible with at least two bandwidth modes, the recognition and the switching of the modulation bandwidth are automatically processed by software, no manual intervention is required and the operation is simple.

Description

technical field [0001] The present invention relates to communication technology, more specifically, to a signal bandwidth adaptive identification method and system. Background technique [0002] The radio spectrum is a limited strategic resource. With the development of wireless communication services, it is an inevitable trend to compress the channel bandwidth of wireless communication to meet the increasing number of users. For this reason, it is imperative to transition the channel bandwidth of the wireless walkie-talkie from 25kHz to 12.5kHz and 6.25kHz. Foreign wireless walkie-talkie communication is developing towards narrowband 6.25kHz technology, and 6.25kHz narrowband technology is the development direction of international digital walkie-talkie. [0003] In order to better promote the application of narrowband digital technology in the market, European ETSI (European Telecommunications Standards Institute, European Telecommunications Standards Institute), Europe...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L25/03H04L7/033
Inventor 姜雄彪郑元福尹瑞华郁炳炎
Owner HYTERA COMM CORP