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Cognition anti-interference communication method based on reinforcement learning algorithm

A communication method and reinforcement learning technology, applied in wireless communication, transmission monitoring, network traffic/resource management, etc., can solve problems such as difficulty in learning effective anti-interference strategies, and achieve the effect of maximizing throughput

Active Publication Date: 2019-04-16
BEIJING UNIV OF TECH
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AI Technical Summary

Problems solved by technology

However, in the proposed Q-learning anti-jamming technology, it is difficult to learn an effective anti-jamming strategy in a large-scale frequency domain-power domain candidate set

Method used

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  • Cognition anti-interference communication method based on reinforcement learning algorithm
  • Cognition anti-interference communication method based on reinforcement learning algorithm
  • Cognition anti-interference communication method based on reinforcement learning algorithm

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Embodiment Construction

[0030] Step (1): Set iteration time t = 0, time range T = 20000, according to perceived interference-free channels {1, 2} and power {4, 8, 12, 16}, form different frequency channels and transmit power combined subset {f u ,p v}, where f u ∈{1,2},f v ∈{4,8,12,16}, the index of each subset is marked as k∈{1,...,8}, all subsets constitute the set {{1,4},...,{2,16 }};

[0031] Step (2): At the initial time t=0, for any node j, traverse all subsets, calculate the metric value of node j for each subset, and obtain the set of metric values ​​of all subsets corresponding to wireless network node j

[0032] As an example, computing the metric for the k=1th subset of nodes j=1 The specific steps are as follows:

[0033] Step (2.1), first calculate the signal-to-interference-noise ratio of the k=1 subset selected by the wireless network node j=1 according to the selected channel and power Among them, node j=1 selects the received power of the k=1th subset as P j,k -249.4150dBm...

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Abstract

The invention discloses a cognition anti-interference communication method based on a reinforcement learning algorithm. Firstly, spectrum sensing is utilized for obtaining an interference-free channeland power, subsets in which different frequency channels and transmitting power are combined are formed, an index value of each subset is marked, and all the subsets form a candidate resource set; then at an initial moment, each node traverses all the subsets, and a metric of the node for each subset is calculated, so that a set of the metrics of all the subsets corresponding to the node is obtained; then the node selects a subset corresponding to a maximum metric from a set of corresponding metrics, and the metric corresponding to the subset is updated; and finally performing iterative computation on the metric in a time range T, wherein the subset corresponding to the maximum metric can enable throughput of the node to be maximized. The cognition anti-interference communication method disclosed by the invention learns an optimal strategy by utilizing the reinforcement learning algorithm, and each node performs independent adjustment, channel selection and power distribution, so thatthroughput of an anti-interference communication system is maximized and the anti-interference aim is achieved.

Description

technical field [0001] The invention relates to the field of wireless communication, and relates to a communication anti-interference method for improving the capacity of a cognitive wireless network. Background technique [0002] At present, high-density, multi-band deployed wireless communication systems have brought serious electromagnetic interference. Therefore, while pursuing higher speed, longer distance and better service quality, the wireless communication system needs to greatly improve its anti-interference ability. [0003] Generally, spread spectrum anti-jamming and adaptive antenna technology are widely used in communication systems. Spread spectrum anti-interference is usually divided into direct sequence spread spectrum and frequency hopping. The anti-interference principle is to expand the signal spectrum in the frequency domain, thereby reducing the power density of the spectrum, so that useful signals are submerged in interference and environmental noise....

Claims

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Application Information

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IPC IPC(8): H04B17/309H04B17/336H04B17/382H04W28/02H04W28/20
CPCH04W28/0236H04W28/20H04B17/309H04B17/336H04B17/382
Inventor 黎海涛罗佳伟
Owner BEIJING UNIV OF TECH
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