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Signal detection circuit and method based on Gini Correlation

A signal detection and signal technology, applied in the field of communication, can solve the problem of impulsive noise not working, and achieve the effect of high performance advantage

Active Publication Date: 2015-02-04
中山易美杰智能科技有限公司
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Problems solved by technology

The relevant literature has proved that PPMCC is extremely sensitive to the impulse noise in the signal and cannot work well in the impulse noise environment

Method used

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  • Signal detection circuit and method based on Gini Correlation
  • Signal detection circuit and method based on Gini Correlation
  • Signal detection circuit and method based on Gini Correlation

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Embodiment Construction

[0024] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, so as to understand the essence of the present invention more clearly and intuitively.

[0025] Signal detection is a basic content of signal processing, and echo signal delay detection and communication signal synchronous capture are indispensable links for radar, sonar and modern communication technology. The present invention is aimed at the judgment that the existing commonly used signal delay detection technology cannot well overcome the interference of the signal due to the interference brought by the pulse noise added in the propagation and affects the signal detection. The matched filter can make the passed signal get the maximum signal-to-noise ratio output SNR=2E s / N 0 (where E s is the input useful signal energy, N 0 / 2 is the bilateral power spectral density of additive Gaussian white noise), and is the...

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Abstract

The invention relates to a signal detection circuit and method based on Gini Correlation. The circuit comprises two comparator arrays, a subtracter array, two multiplier arrays, two adder trees, a divider and a register, wherein the comparator arrays and the subtracter array are n*n matrixes (n is a signal length); each element on the matrixes is applied to comparison computation and subtraction computation respectively; the multiplier arrays are n2 2-input multipliers; the adder trees are n2-input adders; the divider is used for finishing 2-input division computation; and the register is used for registering results of relevant computations. When environmental noise comprises a pulse noise component, matching of a filter with a Pearson's Product Moment Correlation Coefficient basically fails. The Gini Correlation shows excellent robustness, comprising mathematical expectation which is very close to a true value and a small standard different, in a noise environment comprising pulse components.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a Gini correlation-based signal detection circuit and method for radar and sonar ranging and synchronous capture of radio communication. Background technique [0002] Capturing the echo signals of radar and sonar for delay detection, and signal synchronization in radio communication requires signal detection of received signals to determine whether a specific signal has been received by the receiver. Therefore, the signal detection of the received signal is a very important issue. At present, the means of signal delay detection are mainly matched filters and improved filters based on them. A matched filter is an optimal linear filter in the sense of maximizing the signal-to-noise ratio of the output signal. Because of its simple form, easy implementation, and complete theoretical proof, it has been widely used. However, the matched filter is demonstrated and designed und...

Claims

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Application Information

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IPC IPC(8): H04B17/20
Inventor 马如豹徐维超林宝洪章云
Owner 中山易美杰智能科技有限公司
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