A method and device for processing OFDM synchronous training sequence

A training sequence and sequence technology, applied in the OFDM field, can solve the problems of not ensuring the timing synchronization accuracy of the synchronous training sequence and anti-multipath interference.
CN104333526BInactive Publication Date: 2017-07-28UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
UNIV OF ELECTRONICS SCI & TECH OF CHINA
Publication Date
2017-07-28
Estimated Expiration
Not applicable ยท inactive patent

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Abstract

The invention relates to a method and device for processing OFDM synchronous training sequences. The method comprises: performing multiple cyclic shifts on the OFDM synchronous training sequence to obtain a plurality of cyclic shift sequences; adding a cyclic prefix before each cyclic shift sequence to obtain a candidate sequence; calculating the average slope of a timing metric function of the candidate sequence; and The candidate sequence with the largest average slope is used as the processed OFDM synchronization training sequence.
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Description

technical field

[0001] The present invention relates to the technical field of OFDM, in particular to a method and device for processing OFDM synchronous training sequences. Background technique

[0002] 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.

[0003] 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.

[0004] 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 terms of structure and content, it ...

Claims

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