Method for Improving the Reliability of Transmission Signals in Internet of Vehicles Based on Multilevel Optimization
A technology for transmitting signals and Internet of Vehicles, which is applied in the field of improving the reliability of transmission signals of Internet of Vehicles based on multi-level optimization, which can solve the problems of increasing and reducing computational complexity, and achieve reduced computational complexity, reduced computational complexity, The effect of reducing the energy consumption of transmission signals
Active Publication Date: 2022-04-29
CHANGAN UNIV
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These U different sequences are obtained by multiplying the input data sequence by the phase rotation vector of length N, but as U increases, the computational complexity of finding the optimal phase rotation sequence will increase sharply, so how to effectively reduce the calculation Complexity is a difficult point in choosing a map-sequence technique
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[0034] The present invention is further elaborated below in conjunction with accompanying drawing and emulation simulation:
[0035] The technical principle of selecting a mapping sequence is as follows: set the length of the input sequence to be N, X={X 0 ,X 1 ,...,X N-1}, define pop phase rotation sequences of length N:
[0036] in is a random variable uniformly distributed in the interval [0,2π), then the sending candidate sequence is
[0037] Select the sequence with the smallest overall amplitude from the pop sequences to send; through the method of the present invention, the optimal sequence c in the pop phase rotation sequences can be found, and then the optimal sequence c is multiplied by the input sequence to obtain the overall amplitude Minimal send sequence.
[0038] The technical solution of the present invention is: first initialize the number of iterations t=0, set the number of iterations to be M, generate a random matrix, and compare the initial Q bit...
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The invention discloses a method for improving the reliability of vehicle network transmission signals based on multi-level optimization. First, the number of iterations is initialized to t=0, and the number of iterations is set to T=N, and the original Q bit sequence Q(t) is compared with a random matrix to generate a feasible solution. c(t), evaluate c(t) through the initial fitness function f(t) and store the optimal solution in c best (t), then iterate t=t+1, update Q(t) and compare with the regenerated random matrix to generate c(t), use the updated f(t) to evaluate c(t) to select the optimal solution , find c best (t‑1) and the optimal solution c in c(t) are stored in c best (t), iterate again, output c until the iteration end condition is met, then multiply c and the input sequence to obtain the final transmission sequence; the present invention uses the selection mapping sequence technology to process the original input signal of the Internet of Vehicles. Quantum theory and multi-objective optimization mechanism, with U statistically independent vectors X u , (u=1, 2, .
Description
technical field [0001] The invention belongs to the technical field of traffic information engineering and control, and in particular relates to a method for improving the reliability of vehicle network transmission signals based on multi-level optimization. Background technique [0002] With the development and growth of China's automobile industry, the emerging concept of Internet of Vehicles is quietly emerging and moving forward at an alarming speed. Internet of Vehicles is an important branch of Internet of Things technology. And other identification technologies, realize the extraction and effective utilization of static and dynamic information of all vehicle attribute information on the information network platform, and effectively supervise the operating status of all vehicles and provide comprehensive services according to different functional requirements. [0003] There is a problem of excessive signal amplitude in signal transmission in the Internet of Vehicles s...
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IPC IPC(8): H04W4/40H04W4/70H04W52/02
CPCH04W4/40H04W4/70H04W52/02H04W52/0261Y02D30/70
Inventor 侯俊王威刘鑫一张阳谢莹李岩栗振阳赵嘉成
Owner CHANGAN UNIV