Single-node dynamic receiving sensor noise analysis model and analysis method
A technology for receiving sensors and noise analysis, applied in the direction of shaping networks, instruments, transmission systems, etc. in the transmitter/receiver, which can solve the problems of lack of continuity analysis and poor analysis effect.
Active Publication Date: 2017-10-13
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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[0057] 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.
[0058] Given source signal vector S=[s 1 (t),s 2 (t),...,s N (])] 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 capable of analyzing multiple positions and an analysis method, and relates to a noise analysis method in wireless communication. The single-node dynamic receiving sensor noise analysis model is characterized in that three transmitting sensors are used for transmitting image signals, which are masked by chaotic signals, of target image information at a transmitting terminal; at a receiving terminal, a fixed receiving sensor 1 and a fixed receiving sensor 2 are fixed in position, the distance is lambda / 2, and a dynamic receiving sensor is located between a point a and a point b, wherein the point 1 is a middle position of the fixed receiving sensor 1 and the fixed receiving sensor 2, and the point b forms a regular triangle with the fixed receiving sensor 1 and the fixed receiving sensor 2. When analysis is performed, the noise correlation between the dynamic receiving sensor and the fixed receiving sensor 1 and the fixed receiving sensor 2 is determined according to the position of the dynamic receiving sensor; and corresponding noise is cut out according to the noise correlation and added to corresponding image signals transmitted by the transmitting terminal so as to be used 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): H04L25/03H04L27/00G06K9/62G06F17/50
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