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Method and device for generating ternary zero cross-correlation zone sequence

A zero-correlation zone and sequence technology, applied in the field of generation of ternary zero-cross-correlation zone sequence sets

Inactive Publication Date: 2016-07-06
CHONGQING TELECOMMUNICATION INSTITUTE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this type of sequence only has a two-valued zero cross-correlation region, so it will be limited in the design of sequence parameters and the practical application of the sequence

Method used

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  • Method and device for generating ternary zero cross-correlation zone sequence
  • Method and device for generating ternary zero cross-correlation zone sequence
  • Method and device for generating ternary zero cross-correlation zone sequence

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example 1

[0037] In this embodiment, according to system requirements, a ternary zero cross-correlation zone sequence set C with both the number of users and the processing gain equal to 8 is designed. Then it can be determined that the order of the DFT sequence matrix F is N=2, the number of sequences of the set C is 8, the number of subsequences is 2, and the length of the subsequences is 4.

[0038] device according to the invention figure 1 The process shown in , first select the 2nd order DFT sequence matrix F = F 0 F 1 = F 0,0 F 0,1 ...

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Abstract

The invention discloses a generation method and a generation device or a three-valued zero cross-correlation zone sequence, and belongs to the technical field of design of communication system signals. According to the generation method and the generation device, a sequence set with three zero cross-correlation zones of different width is obtained by virtue of the shifting Kronecker product based on a DFT (Discrete Fourier Transform) sequence matrix and the block interleaving operation. The generated three-valued zero cross-correlation zone sequence set is divided into a plurality of sequence groups; each sequence group is divided into a plurality of sequence subgroups; and the sequences in the sequence subgroups, the sequences among the sequence subgroups and the sequences among the sequence groups are given the zero cross-correlation zones of different width. The sequence set and each sequence group both reach the theoretical boundary of the sequence design, thus address code sequences for inhibiting the interference among the codes can be provided for a code division multiple access communication system, and training sequences and reference signals also can be provided for an OFDM (orthogonal frequency division multiplexing) communication system to carry out time / frequency synchronization and channel estimating.

Description

technical field [0001] The invention belongs to the technical field of communication system signal design, and in particular relates to a method for generating a ternary zero cross-correlation zone sequence set suitable for interference suppression in a wireless communication system. Background technique [0002] As the two most important factors in sequence design and application, correlation performance and sequence number restrict and contradict each other. How to balance them optimally has always been a problem that people care about and devote themselves to research. By sacrificing a certain number of sequences and having zero-correlation zone sequences with local ideal correlation performance, inter-symbol interference can be effectively suppressed for nearly synchronous code division multiple access systems. However, as a single type of sequence (such as gold sequence and Walsh-Hadamard orthogonal sequence, etc.), the Welch circle has clarified that this type of sequ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L25/03H04L25/02H04J13/18
Inventor 葛利嘉张振宇钱林杰朱林双涛卢明伦
Owner CHONGQING TELECOMMUNICATION INSTITUTE