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Multi-mode mobile communication terminal and its signal processing method

A mobile communication terminal, multi-mode technology, applied in the field of multi-function terminals, can solve problems such as communication or upgrade difficulties, interconnection obstacles, etc., and achieve the effect of saving resources and saving hardware resources

Inactive Publication Date: 2006-02-08
SOUTHEAST UNIV
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The coexistence of multiple short-distance wireless interconnection standards has created obstacles to the interconnection and intercommunication of devices using different wireless interconnection technologies
With traditional hardware-based gateways, it is very difficult to communicate or upgrade between different systems and standards

Method used

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  • Multi-mode mobile communication terminal and its signal processing method
  • Multi-mode mobile communication terminal and its signal processing method
  • Multi-mode mobile communication terminal and its signal processing method

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Embodiment Construction

[0013] Below in conjunction with embodiment and accompanying drawing, the present invention will be further described.

[0014] The receiving process is as follows: the signal received by the smart antenna is filtered and amplified by radio frequency, and then converted into an intermediate frequency signal by a down-conversion circuit. After the intermediate frequency signal is converted by A / D, the time-domain feature quantity and frequency-domain feature quantity of the sampling signal are obtained by using the Wigner distribution time-frequency analysis method. The fuzzy neural network is trained according to the different time-frequency characteristic quantities of the pseudo-random sequence codes used in the three kinds of network spread spectrum. After training and learning, the trained fuzzy neural network controller can judge according to the time-frequency characteristics of the received signal Which network (Bluetooth network, Zigbee network, or IEEE 802.11b network...

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Abstract

Disclosed are a multi-mode mobile communication terminal and method for signal processing. The inventive terminal comprises transmitter and receiver, wherein the transmitter comprising terminals that can be re-deployed (1), communication module (2), D / A converter (3), communication mode selector (4), up converter (5), wide band amplifier (6) and intelligent antenna (15); the receiver comprises intelligent antenna (15), RF filter and amplifier (8), down converter (9), A / D converter (10), communication mode recognizer and mode converter (14) and terminals that can be re-deployed (1).

Description

technical field [0001] The present invention designs a multifunctional terminal based on signal time-frequency analysis method, fuzzy neural network technology and software radio technology. Using the same set of hardware, the terminal can be used as a terminal of Bluetooth, Zigbee, IEEE802.11b and other systems by calling different software modules. It has the characteristics of multi-network communication and belongs to the field of wireless communication. Background technique [0002] The coexistence of multiple short-distance wireless interconnection standards has created obstacles to the interconnection and intercommunication of devices using different wireless interconnection technologies. With traditional hardware-based gateways, it is very difficult to communicate or upgrade between different systems and standards. Based on the above reasons, the present invention proposes a multifunctional terminal based on software radio, a radio system that adopts a fixed hardwar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/40H04M1/02
Inventor 叶芝慧朱晓荣宋铁成沈连丰夏玮玮
Owner SOUTHEAST UNIV
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