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A scrambler for generating scrambling sequence and scrambling method thereof

A code mixer and generator technology, applied in the direction of multiplexing code generation, pulse generation with predetermined statistical distribution of parameters, encoding, etc.

Inactive Publication Date: 2005-09-07
VIA TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Therefore the main purpose of the present invention is to provide a kind of code mixer and related method that can still step quickly under a continuous unnecessary intermediate state, to solve the problem of above-mentioned known code mixer

Method used

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  • A scrambler for generating scrambling sequence and scrambling method thereof
  • A scrambler for generating scrambling sequence and scrambling method thereof
  • A scrambler for generating scrambling sequence and scrambling method thereof

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Embodiment Construction

[0026] In the description of the present invention, the scrambler (scrambler) of the present invention is described with an example of a CDMA2000 forward packet data channel (forward packet data channel, F-PDCH), but it is not used to limit the present invention, for example , the present invention can also be applied to a de-scrambler. Furthermore, the present invention can also be applied to other communication systems or data encryption systems that require data mixing, such as computer networks.

[0027] see figure 2 , figure 2 is a block diagram of the code mixer 20 according to the first embodiment of the present invention. The mixer 20 includes a shift register 22, and the shift register 22 includes a plurality of registers D1-DN. The code mixer 20 further includes a plurality of logic circuits 26 and a multiplexer 28, wherein the multiple logic circuits 26 are connected to the output terminals of the registers D1-DN of the shift register 22, and the multiplexer 28...

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Abstract

A scrambler includes a linear shift register having logic suitable for generating a scrambling sequence according to a predetermined generator sequence, a plurality of logic gates that allow for parallel input to the shift register, and a multiplexer for switching inputs of the shift register. The multiplexer switches inputs so that the shift register can be loaded with a predetermined initial value, and shifted a single bit or shifted a predetermined number of bits though the generator sequence.

Description

technical field [0001] The invention relates to a code mixer and a code mixing method thereof, in particular to an electronic code mixer and a code mixing method for generating a scrambling sequence (Scrambling Sequence). Background technique [0002] In today's information age with rapid technological advancement, the communication system has developed rapidly and has become one of the indispensable equipment for modern people. For example, the increasingly popular mobile phone is a typical representative of technology changing human life style. Mobile phones provide an inexpensive and convenient way to keep in touch with family, friends and colleagues at any time. Therefore, along with the increasing popularization of mobile phones, the progress and development of their functions and technologies have also become a major demand. [0003] At present, the industry has developed a code division multiple access (CDMA2000) technology in the third generation (3G) wireless comm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03K3/84H04B1/707H04J13/10
CPCH03K3/84H04J13/10H04B1/707
Inventor 卢克圣
Owner VIA TECH INC