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Communication system capable of being compatible with digital communication system and analog communication system and communication method

A technology of communication system and communication method, applied in the direction of transmission system, two-party line system station, electrical components, etc., can solve the problems of self-contained and independent, and achieve the effect of low energy consumption, convenient use and low cost

Inactive Publication Date: 2010-09-01
ANHUI YAJI ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, whether it is a digital walkie-talkie or an analog walkie-talkie, its biggest disadvantage is that it is self-contained and independent of other wireless communication systems.
However, it is quite difficult to make a digital communication system compatible with an analog communication system.

Method used

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  • Communication system capable of being compatible with digital communication system and analog communication system and communication method
  • Communication system capable of being compatible with digital communication system and analog communication system and communication method

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Embodiment Construction

[0016] Below in conjunction with accompanying drawing and specific embodiment, the present invention is described in further detail: the present invention is as follows: figure 1 As shown, it includes a radio frequency chip 4 and a baseband chip 5 connected together; the radio frequency chip 4 and the baseband chip 5 include an antenna 1, a switch 2, a matching circuit 10, a power amplifier 9, and a lower matching circuit connected in sequence 8. Pre-power amplifier 49, output frequency amplifier 481, voltage-controlled oscillator 482, fractional controller 483, serial interface 484, modulator 513, radio frequency chip interface 518, the switch 2, upper matching circuit 3, low noise Amplifier 41 is connected successively, and described low-noise amplifier 41 is followed by upper mixer 42, upper filter 44, upper automatic gain amplifier 45, upper digital / analog converter 46, received signal preprocessor 51, central processing unit 52 connected, the low noise amplifier 41 is con...

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PUM

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Abstract

The invention discloses a communication system capable of being compatible with a digital communication system and an analog communication system and a communication method. In the method of the invention, multilevel logic substitutes second logic in a digital circuit, namely a sampling signal is adopted to represent an analog signal for digital processing, and conversely, a digital signal is reduced into the analog signal through the processing of a smoothing filter. The system of the invention comprises a radio frequency chip and a base band chip which are connected together. The communication system of the invention has the advantages of transmitting an acoustical signal, capacity of being compatible with all of the other wireless communication systems including an analog interphone wireless communication system, being a narrow-band communication system, providing an enough signal transmitting distance, providing signal encrypting and encoding functions to guarantee communication safety and providing user identification function and self-setting function, along with high sensitivity, strong practicability, convenient use, high integrity, small volume, multiple expansion functions, low energy consumption and low cost.

Description

technical field [0001] The invention relates to a communication system and method compatible with a digital communication system and an analog communication system, and belongs to the technical field of wireless communication. Background technique [0002] At present, walkie-talkies are the most frequently used in wireless communication systems without base stations. Among them, the walkie-talkie is the most used, because it is not restricted by the network. In places where the network does not cover, the walkie-talkie can allow users to communicate easily; one-click to talk, easy to operate; and it has a timely group call mode, which is used in public security. , Civil aviation, transportation, water conservancy, railway, manufacturing, construction, service and other industries, especially in the emergency dispatch and collective cooperation work, to carry out communication and command dispatch among group members to improve communication efficiency and improve the handlin...

Claims

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Application Information

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IPC IPC(8): H04B1/40H04Q5/24
Inventor 葛海彬潘吴
Owner ANHUI YAJI ELECTRONICS TECH
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