Single node dynamic receiving sensor noise analysis system and analysis method
A technology for receiving sensors and analysis methods, applied in transmission systems, digital transmission systems, baseband systems, etc., and can solve problems such as poor analysis effect and lack of continuous analysis.
Active Publication Date: 2020-02-28
北京中兴协力科技有限公司
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[0006] When analyzing the noise measurement and analysis of the single-node receiving sensor in the existing linear array or planar array, the noise measurement of the receiving sensor is performed, and after the measurement, the noise is analyzed to determine the influencing factors. This method can only analyze the noise in one position. noise, does not have continuity analysis, so the analysis effect is poor
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[0058] In this embodiment, noise analysis is performed based on a mathematical model of positive definite blind source separation. Assuming that the source signal is n independent signals, after mixing, they are sent out by n transmitting sensor antennas at the transmitting end, transmitted through the channel, and the system model in which n signals are received by n receiving sensors at the receiving end is called is a positive definite hybrid system model. The mathematical model of blind source separation for positive definite hybrid systems is as follows: figure 2 shown.
[0059] Given source signal vector S=[s 1 (t),s 2 (t),...,s N (t)] T , represents N unknown source signal vectors. In order to achieve the purpose of signal concealment and secure transmission, one of the vectors is selected as a chaotic signal, and then the image information is effectively hidden in the chaotic signal, so that it can achieve the role of secure transmission. A is an unknown channel...
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The invention provides a single-node dynamic receiving sensor noise analysis model and analysis method capable of analyzing multiple positions, and relates to a noise analysis method in wireless communication. The model includes: at the sending end, three sending sensors are used to send the image signal of the target image information covered by the chaotic signal; at the receiving end, the positions of No. 1 fixed receiving sensor and No. 2 fixed receiving sensor are fixed, and the distance is λ / 2 , the dynamic receiving sensor is located between point a and point b; point a is the middle position between No. 1 fixed receiving sensor and No. 2 fixed receiving sensor, and point b forms an equilateral triangle with No. 1 fixed receiving sensor and No. 2 fixed receiving sensor. During the analysis, according to the position of the dynamic receiving sensor, determine the noise correlation between the dynamic receiving sensor and the No. 1 fixed receiving sensor and No. 2 fixed receiving sensor; according to the noise correlation, cut out the corresponding noise and add it to the corresponding image sent by the sending end signal for noise analysis.
Description
technical field [0001] The invention relates to a noise analysis method in wireless communication. Background technique [0002] In a wireless communication system, it is necessary to convert the guided wave energy from the transmitter into radio wave transmission, or convert the radio wave into guided wave energy for reception. The device used to radiate and receive radio waves is called an antenna or a sensor. [0003] The antenna system is composed of many identical single antennas or sensors arranged according to certain rules, also known as antenna array. If the antennas are arranged in a straight line or on a plane, it becomes a linear array or a planar array. Antenna arrays composed of multiple units separated from each other and whose centers are arranged on a straight line are called linear antenna arrays; planar arrays are antenna arrays in which all the units that make up the array are located on the same plane, generally rectangular, circular, and triangular. W...
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IPC IPC(8): H04L25/03H04L27/00G06K9/62G06F30/20G06F119/10
CPCH04L25/03993H04L27/001G06F2119/10G06F30/20G06F18/2134
Inventor 王尔馥陈新武解雅钦
Owner 北京中兴协力科技有限公司