Construction method of mutual orthogonal zero correlation zone multiphase sequence set

A zero-correlation zone and polyphase sequence technology is applied in the field of constructing sets of polyphase sequences in mutually orthogonal zero-correlation zones, which can solve problems such as reducing system capacity.

Inactive Publication Date: 2013-03-27
CHONGQING TELECOMMUNICATION INSTITUTE
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Problems solved by technology

[0008] It can be seen that there is a contradiction between the length of the zero-correlation zone and the number of sequences in the traditional set of zero-correlation zone sequences. In order to obtain a larger zero-correlation zone length, the number of sequences must be sacrificed, that is, the capacity of the system must be reduced

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  • Construction method of mutual orthogonal zero correlation zone multiphase sequence set
  • Construction method of mutual orthogonal zero correlation zone multiphase sequence set
  • Construction method of mutual orthogonal zero correlation zone multiphase sequence set

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example 1

[0033] In this embodiment, a mutually orthogonal zero-correlation zone polyphase sequence set A with a number of sequence subsets of 27 and a sequence length of 243 is constructed. Selected literature (H.Torii, M.Nakamura, N.Suehiro "A New Class of Polyphase Sequence Sets with Optimal Zero-Correlation Zones," IEICE Trans.on Fundamentals, vol.E88-A, no.7, pp.1987- 1994, July 2005), the three-phase zero-correlation zone sequence set ZCZ-(27, 9, 2) is used as the core set, here we know that the sequence length is L 0 =27, the number of sequences is P=9, and the length of the one-sided zero-correlation zone is Z 0 =2. The core set X={x i =(x i，0 , x i，1 ,...,x i，26 ), the sequence element x in 0≤i≤8} i，l Expressed as 0≤l≤26. then the sequence x i can be determined by φ i said, among them,

[0034] φ 0 =(012012012021021021000000000), φ 1 =(000000000012012012021021021),

[0035] φ 2 =(021021021000000000012012012), φ 3 =(012201120021210102000222111),

[0036] φ 4 =...

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Abstract

The invention discloses a construction method of a mutual orthogonal zero correlation zone multiphase sequence set and belongs to the technical field of communication system signal design. Based on a traditional zero correlation zone sequence set as a core set, a perfect sequence of cyclic shift is used, and a zero correlation zone sequence set can be expanded into a new sequence set including a plurality of mutual orthogonal zero correlation zone sequence sub-sets. The sequence set can reach a theoretical boundary of sequence design, can provide a sequence with a good interference restraining characteristic for a high-capacity code division multiple access communication system, and simultaneously can be used as a synchronous training sequence and signal channel estimation reference signals and the like of a communication system of orthogonal frequency division multiplexing and the like.

Description

technical field [0001] The invention belongs to the technical field of wireless communication system signal processing, and in particular relates to a method for constructing a mutually orthogonal zero-correlation zone multi-phase sequence set suitable for anti-interference in a large-capacity mobile communication system. Background technique [0002] ZCZ sequences can have ideal periodic correlation performance in a specific interval, so they have always been favored by near-synchronous code division multiple access communication systems. However, the excellent correlation performance of this type of sequence is at the expense of the number of sequences, especially when the length of the zero-correlation zone is large, the number of zero-correlation zone sequences is much smaller than the number of orthogonal sequences of the same length. In order to solve the problem of limited number of sequences, people consider combining multiple sets of zero correlation zone sequences ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J13/14
Inventor 葛利嘉张振宇钱林杰朱林双涛赵波
Owner CHONGQING TELECOMMUNICATION INSTITUTE
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