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Pseudo random sequence generation method and apparatus

A pseudo-random sequence and generation device technology, applied in the field of pseudo-random sequence generation, can solve the problems of high cost, scrambling code sequence cannot support parallel processing, time-consuming, etc., and achieve the effect of reducing processing delay and benefiting parallel computing

Active Publication Date: 2014-05-21
LEADCORE TECH
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Problems solved by technology

[0011] Therefore, if the above-mentioned device is used to generate pseudo-random sequences, it will be time-consuming. At the same time, if it is for hardware or distributed systems, in order to reduce processing delays, it may be necessary to consider parallel computing. Sequences can only be generated by serial generation, which limits parallel computing where other scrambling codes are required. For example, the terminal considers dividing the PDSCH into blocks for parallel processing, but the scrambling code sequence cannot support parallel processing. One consideration The method is to pre-generate the scrambling code and store it for use in parallel computing. However, as the scrambling code introduced above is not fixed, the initial state itself has a certain randomness, and the storage will require a large storage space, which is too expensive.

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  • Pseudo random sequence generation method and apparatus

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[0049] In order to make the object, technical solution and advantages of the present invention clearer, various embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. However, those of ordinary skill in the art can understand that, in each implementation manner of the present invention, many technical details are provided for readers to better understand the present application. However, even without these technical details and various changes and modifications based on the following implementation modes, the technical solution claimed in each claim of the present application can be realized.

[0050] The first embodiment of the present invention relates to a method for generating a pseudo-random sequence, the specific process is as follows figure 2 shown, including the following steps:

[0051] Step 201, using the generation relation of the first m sequence, for the first pseudo-random sequence x 1 (n+D) is rec...

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Abstract

The invention relates to the technical field f wireless communications, and discloses a pseudo random sequence generation method and apparatus. In the invention, the method comprises: by use of the generation relation of a first m sequence, performing recursion on a first pseudo random sequence x1(n+D), obtaining a simplification form of the x1(n+D), which is expressed by using the mode 2 sum of x1(n), x1(n+1),..., x1(n+T1), and generating a first pseudo random sequence such that original data after multiple times of recycling can be directly obtained, there is no need to generate useless data firstly, the generation of a pseudo random sequence is more rapid, the processing time delay is reduced, and the parallel calculating is facilitated.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a method and device for generating a pseudo-random sequence. Background technique [0002] Pseudo-random sequence is a sequence with statistical characteristics similar to random noise, and can be repeatedly generated and processed, avoiding the disadvantage that random noise is difficult to generate repeatedly, so it has been widely used in various communication systems, usually used as a scrambler for cells Code, terminal scrambling code, pilot frequency, etc., to randomize interference or as a training sequence. The 3rd Generation Partnership Project Long Term Evolution ("3GPP LTE") is a quasi-4G mobile communication technology. The project's goal is to achieve higher data rates, shorter delays, and lower cost, higher system capacity, and improved coverage. Using pseudo-random sequences to generate reference signals, scrambling codes, frequency hopping pattern...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J13/10
Inventor 徐兵
Owner LEADCORE TECH
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