WCDMA system long scrambling code parallel generation method and apparatus

A wideband code division multiple access, long scrambling code technology, applied in code division multiplexing systems, multiplexing code generation, baseband system components and other directions, can solve the problems of low processing capacity and large processing delay, and achieve The effect of improving processing power and reducing processing delay

Active Publication Date: 2008-01-02
SANECHIPS TECH CO LTD
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Problems solved by technology

[0013] The purpose of the present invention is to provide a method and device for parallel generation of long scrambling codewords, to overcome the problems of large processing delay and low processing capacity in the above...

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  • WCDMA system long scrambling code parallel generation method and apparatus
  • WCDMA system long scrambling code parallel generation method and apparatus

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Embodiment Construction

[0033] The technical solutions and beneficial effects of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0034] The method of the present invention designs a method of obtaining n=2m (m=1, 2, ..., 32) long scrambling codewords starting from the current phase in parallel from the long scrambling code sequences X and Y, for a group For the long scrambling code sequences X and Y, the long scrambling code words of the current phase can be obtained by the method shown in Figure 1. For the long scrambling code sequences X and Y of the current phase, the long scrambling code sequence X is rotated by one phase. 1 , Y 1 The generation of the corresponding long scrambling codeword can be obtained by using the sequence values ​​of the long scrambling code sequence X and Y, because the generator polynomial of the long scrambling code sequence can be rotated by X and Y to obtain X 1 , Y 1 , so the long scrambling code seque...

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Abstract

The invention discloses a long interfere code parallel generating method of wideband code-division multiple address system, and a relative device, wherein the method comprises that using long interfere code parallel generated number n to obtain rotated times needed by long interfere code sequence, and long interfere code cut-off bit parameter generated by the long interfere code sequence obtained in last rotation, rotating phase for the long interfere code sequences X, Y while the phase bias is 16, each group of long interfere code sequences parallel generate 16 long interfere codes, cutting off needed long interfere codes from 16 parallel long interfere codes generated by the long interfere code sequence obtained by last rotation, parallel outputting parallel generated n long interfere codes according to phase sequence. The invention can reduce the process time delay of serial long interfere code, to improve system processing ability and expand application.

Description

technical field [0001] The present invention relates to a mobile communication method and device, in particular to a method and device for parallel generation of long scrambling codewords in a wideband code division multiple access system. Background technique [0002] In the wideband code division multiple access communication system of the prior art, for anti-jamming, anti-multipath, anti-interception, secrecy, multiple access communication, synchronization, etc., a pseudo-random code sequence can be used to encrypt the signal, that is, to The spread spectrum signal is scrambled. [0003] When the base station obtains the baseband signal sent by the user through radio frequency reception, it needs to perform an inverse operation of scrambling on the received baseband signal, that is, descrambling. In wideband code division multiple access communication systems, the uplink usually adopts the long scrambling code of the Gold code to realize signal scrambling, so the base st...

Claims

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Application Information

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IPC IPC(8): H04L25/08H04L29/06H04B1/707H04J13/00H04J13/10
Inventor 冯立国陈月峰梁戈超
Owner SANECHIPS TECH CO LTD
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