Cooperative receiving method and system based on air interface information fusion

Abstract

The invention relates to a cooperative receiving method and a system based on air interface information fusion, and the method comprises the steps: obtaining a second channel coding signal through eliminating the phase rotation of a channel for a first channel coding signal; selecting a cooperative receiver within a set signal-to-noise ratio range of the second channel coded signal, controlling the cooperative receiver to calculate a log-likelihood ratio, and transmitting log-likelihood ratio information of (Q-1) cooperative receivers to the remaining cooperative receivers in an air interfaceinformation fusion mode; and controlling the remaining cooperative receivers to integrate the log-likelihood ratio information of the Q cooperative receivers, and decoding the first channel coded signal according to the integrated log-likelihood ratio information to obtain a decoding result. According to the invention, the cooperative decoding time delay can be greatly reduced, the bit error rateis reduced, more receivers are supported for cooperation, and the expandability of the system is improved.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a cooperative reception method and system based on air interface information fusion. Background technique [0002] In recent years, cooperative communication technology has become one of the hot research areas of wireless communication. Cooperative reception technology combines the received signals of multiple receivers in the wireless network to form a virtual antenna array to increase diversity and power gain, thereby increasing the possibility of successfully decoding noisy transmissions, and improving wireless network capacity and bit error rate performance potential. Cooperative reception may also result in increased communication range, increased data rate and / or reduced transmit power. [0003] Existing cooperative receiving technologies can be roughly divided into the following categories: [0004] a. Each receiver broadcasts its received signal ...

AI Technical Summary

Problems solved by technology

In this method, when the number of receivers is large, the calculation waiting delay will be greatly increased, which will cause the problem of poor network scalability.

[0007] It can be seen that the current cooperative reception technology has defects such as high bit error rate, prolonged interaction time, and poor network scalability.

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