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Generation method and generation apparatus of scrambling code, and processing apparatus of scrambling code

A technology for generating device and scrambling code sequence, applied in the field of mobile communication, can solve the problems of inflexible multiplication matrix, large matrix storage resource consumption, low single-bit rotation performance, etc., to achieve the effect of improving performance, flexibility, and low cost

Active Publication Date: 2013-10-30
SANECHIPS TECH CO LTD
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Problems solved by technology

[0013] Embodiments of the present invention provide a method and device for generating scrambling codes and a processing device for scrambling codes, so as to overcome the low performance of single-bit rotation in the current technology, the consumption of matrix storage resources is too large, and the multiplication matrix is ​​inflexible The problem

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  • Generation method and generation apparatus of scrambling code, and processing apparatus of scrambling code
  • Generation method and generation apparatus of scrambling code, and processing apparatus of scrambling code
  • Generation method and generation apparatus of scrambling code, and processing apparatus of scrambling code

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Embodiment Construction

[0042] In order to make the purpose, technical solution and advantages of the present invention more clear, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.

[0043] Such as figure 2 As shown, it is a schematic structural diagram of an embodiment of a device for generating a scrambling code according to the present invention, and the device includes:

[0044] Address generator 21, rotation coefficient processing module 22, initial scrambling code buffer 23, mapping operator 24, scrambling code buffer 25, rotation end judging device 26 and selector 27, wherein:

[0045]The address generator is used to generate the access address of the rotation coefficient according to the position of the effective bit with the highest current wei...

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Abstract

Provided are a scrambling code generation method, apparatus and a scrambling code processing apparatus, the method comprising the steps of converting the inputted phase shift into a binary number, according to the position of the effective bit with the highest weight in the binary number to generate an access address of a rotation factor, according to the access address to select a corresponding rotation factor from a rotation factor table; mapping a K bits original scrambling code sequence to a 2K bits scrambling code sequence, and calculating the mapped scrambling code sequence with the rotation factor to obtain the rotated scrambling code sequence; updating the effective bit with the highest weight to zero; if the updated phase shift is zero, outputting the rotated scrambling code sequence, and if the updated phase shift is not zero, regarding the updated phase shift as the present inputted phase shift and the rotated scrambling code sequence as the original scrambling code sequence, and repeating the above processes. The solution improves the performance and the flexibility, furthermore has a lower cost.

Description

technical field [0001] The invention relates to the field of mobile communication, in particular to a method and device for generating scrambling codes and a processing device for scrambling codes. Background technique [0002] In a wireless communication system, such as Wideband Code Division Multiple Access (WCDMA), in order to prevent interference, a pseudo-random code is used to encrypt the signal, that is, to scramble the spread spectrum signal. When the transmitter transmits the signal, it mixes the scrambling code with the effective signal through the scrambling code generator, and then transmits it. When the receiver receives the signal, it uses the scrambling code generator to correlate the scrambling code with the received signal to decode the effective signal. The function of signal protection is achieved by scrambling and descrambling. [0003] The 3rd Generation Partnership Project (3GPP) TS25.213 protocol introduces the method of scrambling code generation an...

Claims

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Application Information

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IPC IPC(8): H04J13/10H04B1/7107H04B1/712
CPCH04J13/10H04B1/70756
Inventor 洪思华冯立国徐洪波陈续
Owner SANECHIPS TECH CO LTD
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