Multiple mode hand held intercom chip frame and multiple mode realizing method

A multi-mode, walkie-talkie technology, applied in the field of communication systems, can solve the problems of limited function and performance, short communication distance, poor confidentiality, etc., and achieve the effect of flexible and convenient use, long communication distance and high speed

Inactive Publication Date: 2007-10-10
ZHEJIANG UNIV
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  • Application Information

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Problems solved by technology

The current solution basically uses traditional analog intercom equipment, which can only talk, has poor confidentiality, high power consumption and short communication distance, and its functions and performance are very limited.

Method used

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  • Multiple mode hand held intercom chip frame and multiple mode realizing method
  • Multiple mode hand held intercom chip frame and multiple mode realizing method
  • Multiple mode hand held intercom chip frame and multiple mode realizing method

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Embodiment Construction

[0028] In the present invention, the chip system utilizes configurable and reconfigurable functional modules and adopts a transmission frame format containing a frame header capable of transmitting a modulation mode and a transmission rate to realize the multi-mode hand-held intercom function.

[0029] As shown in Figure 1, the chip architecture of the multi-mode handheld walkie-talkie includes continuous phase modem, spread spectrum modem, up-down converter, front-end processor, CPU, power management, phase-locked loop and test module. Its internal connection relationship is as follows: CPU is connected with memory interface, continuous phase modulator, up-down converter and front-end processor; CPU is connected with memory interface, spread spectrum modem, up-down converter and front-end processor; The chip system provides clock management, the CPU is connected to the power management, continuous phase modem, and spread spectrum modem, and the test module is connected to the ...

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Abstract

The architecture of the chip includes the continuous phase modem (CPM), the spread spectrum modem (SSM), up/low frequency converter, and CPU. The up/low frequency converters accomplish mutual conversion, and sampling rate switch on sample on baseband. CPM accomplishes modulating and demodulating signal in continuous phase, and SSM accomplishes modulating and demodulating signal in spread spectrum. Other modules in CPU control chip are in use being as platform of running network protocol, and in use for executing function of interaction with external data and control command. Using configurable reconstructed functional modules and using format of transmission frame of head capable of transferring modulation mode and transmission rate, the chip system realizes function of hand held walkie-talkie in multimode.

Description

technical field [0001] The invention relates to a communication system, in particular to a chip framework of a multi-mode hand-held walkie-talkie and a multi-mode realization method. Background technique [0002] Handheld wireless communication is widely used in military and police departments such as national defense, fire protection, public security, and armed police, as well as civilian departments such as railway transportation, catering and entertainment, and exploration. The current solution basically uses traditional analog intercom equipment, which can only talk, has poor confidentiality, high power consumption and short communication distance, and its functions and performance are very limited. There is an urgent demand for special portable digital wireless communication equipment with data, voice, and even image communication functions and longer communication distances. Contents of the invention [0003] The purpose of the present invention is to provide a chip...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/38H04M1/02H04W88/06
Inventor 钟杰赵民建金晓东王志雄田津雷鸣
Owner ZHEJIANG UNIV
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