Method for generating OFDM synchronization training sequence and OFDM synchronization method

A training sequence and sequence technology, applied in the field of OFDM, can solve problems such as low timing synchronization accuracy, complex estimation of the integer part of frequency offset, and poor anti-multipath interference ability

Inactive Publication Date: 2015-01-07
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

[0006] However, the existing methods for generating OFDM synchronization training sequences and the corresponding OFDM synchronization methods have problems such as low timing synchronization accuracy, poor anti-multipath interference ability, and complex estimation of the integer part of the frequency offset.

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  • Method for generating OFDM synchronization training sequence and OFDM synchronization method
  • Method for generating OFDM synchronization training sequence and OFDM synchronization method
  • Method for generating OFDM synchronization training sequence and OFDM synchronization method

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Embodiment Construction

[0018] Specific implementations of the present invention will be described below. It should be noted that in the process of specific descriptions of these implementations, for the sake of concise description, it is impossible for this specification to describe all the features of the actual implementations in detail. It should be understood that, in the actual implementation process of any embodiment, just like in the process of any engineering project or design project, in order to achieve the developer's specific goals and to meet system-related or business-related constraints, Often a variety of specific decisions are made, and this can vary from one implementation to another. Furthermore, it will be appreciated that, while such development efforts may have been complex and lengthy, for those of ordinary skill in the art to which the present disclosure pertains, the disclosures disclosed in this disclosure Some design, manufacturing or production changes based on the techni...

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Abstract

The invention relates to a method for generating an OFDM synchronization training sequence and an OFDM synchronization method. The method for generating the OFDM synchronization training sequence includes the steps that a first subsequence of the synchronization training sequence is generated according to the number of OFDM subcarriers; conjugate symmetry is carried out on the first subsequence to obtain a second subsequence of the synchronization training sequence; conjugation is carried out on the first subsequence to obtain a third subsequence of the synchronization training sequence; conjugation is carried out on the second subsequence to obtain a fourth subsequence of the synchronization training sequence; the first subsequence, the second subsequence, the third subsequence and the fourth subsequence are sequentially connected to obtain the synchronization training sequence.

Description

technical field [0001] The invention relates to the technical field of OFDM, in particular to a method for generating an OFDM synchronization training sequence and an OFDM synchronization method. [0002] Background technique [0003] Orthogonal Frequency Division Multiplexing (OFDM) is a special multi-carrier transmission technology, which is widely used in wireless communication systems such as digital audio broadcasting and wireless local area network. [0004] OFDM communication technology is very sensitive to synchronization errors. When carrier frequency deviation and timing errors occur, it will cause Inter-Carrier-Interference (ICI) and Inter-Symbol-Interference (ISI), seriously affecting the overall performance. [0005] In order to eliminate carrier frequency offset and timing error, the prior art usually adds a synchronization training sequence in front of each frame of OFDM transmission data. Since the synchronous training sequence is specially designed in ter...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/26
CPCH04L27/2657
Inventor 邵怀宗李洋杨帆陈超群潘晔
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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