Carrier-wave frequency deviation estimation method in communication system, apparatus and system therefor

A carrier frequency offset, communication system technology, applied in the field of communication, can solve the problems of inability to meet the communication system, low bit error rate index, etc., and achieve the effect of overcoming the impact, high SNR, and improving the range
CN1980208AInactive Publication Date: 2007-06-13HUAWEI TECH CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
HUAWEI TECH CO LTD
Publication Date
2007-06-13
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The method includes following procedures: receiving synchronizing pilot sequence, and obtaining oversampling in frequency domain for synchronizing pilot sequence; on discrete frequency spectrum of oversampling in frequency domain in synchronizing pilot sequence, calculating square of amplitudes of discrete frequency spectrum lines, and summarizing them in order to obtain measure sequence; based on measure sequence to carry out estimation for carrier frequency shift. The invention increases precision of estimating carrier frequency shift, and range of estimation remarkably without increasing complexity.
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Description

technical field

[0001] The present invention relates to the technical field of communication, more specifically, a method, a device and a system for estimating carrier frequency offset in a communication system. Background technique

[0002] At present, Global System for Mobile Communications (GSM) and Code Division Multiple Access Mobile Communication System (CDMA) have been widely used all over the world, while Wideband Code Division Multiple Access Mobile Communication System (WCDMA) and Wideband Code Division Multiple Mobile communication systems such as Multiple Access Mobile Communication System 2000 (CDMA2000) have also been applied to a certain extent within a certain range. Orthogonal frequency division multiplexing (OFDM) technology has the ability to resist inter-symbol interference (ISI) and can provide high spectral efficiency, so it is regarded as one of the most likely transmission technologies for the next generation of wireless mobile communication systems. ...

Claims

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