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A Detection Method of Transmission Signals in Statistical Spectral Domain Based on Cyclic Autocorrelation Function

A technology of autocorrelation function and detection method, which is applied in the field of detection of transmission signals in the statistical spectrum domain, can solve the problems of high hardware requirements, high complexity of receiver processing algorithms, and room for improvement of detection performance, so as to improve detection performance and reduce System hardware requirements and effects of processing algorithmic complexity

Inactive Publication Date: 2019-01-22
SHANGHAI RES CENT FOR WIRELESS COMM +1
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Problems solved by technology

[0005] However, the existing statistical spectral domain multiplexing transmission signal detection methods have high requirements for hardware, the processing algorithm complexity of the receiver is high, and there is still room for improvement in detection performance

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  • A Detection Method of Transmission Signals in Statistical Spectral Domain Based on Cyclic Autocorrelation Function
  • A Detection Method of Transmission Signals in Statistical Spectral Domain Based on Cyclic Autocorrelation Function
  • A Detection Method of Transmission Signals in Statistical Spectral Domain Based on Cyclic Autocorrelation Function

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Embodiment Construction

[0039] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention.

[0040] It should be noted that the diagrams provided in this embodiment are only schematically illustrating the basic idea of ​​the present invention, and only the components related to the present invention are shown in the diagrams rather than the number, shape and shape of the components in actual implementation. Dimensional drawing, the type, quantity and proportion of each component can be changed arbitrarily during actual impleme...

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Abstract

The present application provides a method for detecting a statistical spectral domain transmission signal based on a cyclic autocorrelation function. The detecting method includes the following steps: step S1: selecting several points having the most concentrated energy on a theory CAF plane as a specific target range of the cyclic autocorrelation function; step S2: estimating a cyclic autocorrelation function of a corresponding target range according to the obtained specific target range and based on an observation value of L observation periods of a received signal; step S3: performing feature detection on the obtained estimated value of the cyclic autocorrelation function; and step S4: making a decision on the feature detection result. Compared with the current detection methods, the method for detecting a statistical spectral domain transmission signal based on a cyclic autocorrelation function of the present application greatly reduces requirements of hardware of the system and processing algorithm complexity, increases detection performances, and meanwhile, it can be achieved without changing a hardware structure of the original system receiving terminal.

Description

technical field [0001] The invention belongs to the technical field of communication, and in particular relates to a detection method of a transmission signal in a statistical spectral domain based on a circular autocorrelation function. Background technique [0002] In the 1970s, Weistein and Ebert developed a complete multi-carrier transmission system using discrete Fourier transform (DFT) and fast Fourier method (FFT), that is, Orthogonal Frequency Division Multiplexing (Orthogonal Frequency Division Multiplexing, OFDM) system. OFDM is a kind of multi-carrier modulation. Its main idea is to divide the channel into several orthogonal sub-channels, convert high-speed data signals into parallel low-speed sub-data streams, and modulate them for transmission on each sub-channel. Orthogonal signals can be separated by correlation technology at the receiving end, so that the mutual interference (Inter Carrier Interference, ICI) between sub-channels can be reduced. The signal b...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/26H04B17/30
CPCH04L27/2647
Inventor 徐天衡陈华夏胡宏林
Owner SHANGHAI RES CENT FOR WIRELESS COMM
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