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Method for forming signal inter weave image

A pattern and signal technology, which is applied in the field of signal interleaving pattern generation, can solve problems such as insufficient flexibility, lack of flexibility, and inability to meet interleaving multiple access technology, and achieve the effect of low algorithm complexity

Inactive Publication Date: 2009-11-04
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, once the interleaving length L is fixed, the order n of the corresponding maximum length shift register code and its primitive polynomial are also fixed, so the interleaving pattern is also fixed, lacks flexibility, and cannot meet the needs of interleaving multiple access
[0037] The above-mentioned interleaving methods are all designed for channel interleaving or coded inner interleaving, and the flexibility is not high enough to meet the requirements of interleaving multiple access technology.

Method used

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  • Method for forming signal inter weave image
  • Method for forming signal inter weave image
  • Method for forming signal inter weave image

Examples

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Effect test

Embodiment 1

[0068] Embodiment 1: present embodiment is for the generation of interleaving pattern to the signal address sequence of interleaving length L=27, the signal address sequence before interleaving is set to be arranged in the order of 1-27, and the generation of its interleaving pattern comprises the following steps:

[0069] Step (1): According to the interleaving length L, determine the order n of the maximum length shift register code, because n is to satisfy 2 n ≥L minimum positive integer, then n=5;

[0070] Step (2): take positive integer α=6, and assign its value to variable s, namely s=6;

[0071] Step (3): select address j=0 before interleaving;

[0072] Step (4): Assign the value 5 of s-1 to the variable t, that is, t=5;

[0073] Step (5): because the value 5 of t is smaller than 27, then 5 is used as the address after the interleaving of j=0 as the address before interleaving, and the address j before the interleaving that updates to ask for its address after interle...

Embodiment 2

[0095] Embodiment 2: present embodiment is also for the generation of interleaving pattern to the signal address sequence of interleaving length L=27, the signal address sequence before interleaving is set to be arranged in the order of 1-27, then the generation of interleaving pattern comprises the following steps :

[0096] Step (1): according to the interleaving length L=27, determine the order number n of the maximum length shift register code, because n is to satisfy 2 n ≥L minimum positive integer, then n=5;

[0097] Step (2): get positive integer α=18, and assign its value to variable s, namely s=18;

[0098] Step (3): select address j=0 before interleaving;

[0099] Step (4): Assign the value 17 of s-1 to variable t, namely t=17;

[0100] Step (5): because the value 17 of t is smaller than 27, then 17 is used as the address after the interleaving of j=0 as the address before interleaving, and the address j before the interleaving that updates to ask for its address ...

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Abstract

The invention relates to a method for generating a signal interleaving pattern, belonging to the technical field of communication signal processing. It includes: according to the length L of the address sequence composed of the addresses of all symbols in the signal sequence, determine the order n of the maximum length shift register code, and limit the value range of the positive integer α by n, and then according to these two parameters An interleaving pattern is obtained, that is, all symbols in the output signal sequence after interleaving correspond to addresses in the input signal sequence before interleaving. The feature of the present invention is that: for a fixed interleaving length L, the positive integer α has multiple values, and for different α, different interleaving patterns can be obtained by using the same method.

Description

technical field [0001] The invention belongs to the technical field of communication signal processing, and in particular relates to a method for generating a signal interleaving pattern. Background technique [0002] With the increasing demand for communication, limited spectrum resources have become a bottleneck restricting the development of communication. How to make full use of limited spectrum resources to maintain optimal system capacity has become an important issue in communication systems. The interweaving multiple access technology is a technology produced to solve this problem, further improve the spectrum utilization rate, and improve the system capacity. The interleaving multiple access technology is a technology for distinguishing users according to address codes of different users (that is, interleaving patterns of different users). [0003] If the central station communicates with multiple users in the system at the same time, the signal transmitted by the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H03M13/27H04J99/00
Inventor 周世东李云洲王红梅许希斌肖立民王京
Owner TSINGHUA UNIV
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