Precoding method and device and electronic device

Abstract

The embodiment of the invention provides a precoding method and device and an electronic device. The method comprises the following steps: selecting an optimal code word of a current channel accordingto a Type I codebook scheme, calculating the chord distance between the optimal code word and the current channel, the chord distance being used as target chord distance, wherein the target chord distance represents the similarity of the optimal code word and the current channel on the vector; and if the target chord distance is not greater than the preset chord distance, updating the optimal code word according to a Type II codebook scheme; and sending precoding information carrying the index of the updated optimal code word to the base station end, and the base station end carrying out precoding according to the updated index of the optimal code word. After the optimal codeword is determined according to the Type I type codebook scheme, the optimal codeword can be updated according to the Type II type codebook scheme under the condition that the similarity between the optimal codeword and the current channel on the vector and the preset chord distance are not greater than the presetchord distance, so that the dynamic adjustment of the codebook scheme is realized.

Description

technical field [0001] The present invention relates to the field of communication technologies, in particular to a precoding method, device and electronic equipment. Background technique [0002] In the past two years, the research on 5G technology in the industry and academia has entered a stage of full swing, among which Massive MIMO (Massive Multiple-In Multiple-Out, large-scale multiple-input multiple-output technology) is still one of the key technologies of the physical layer. It plays an important role in improving system capacity and spectrum efficiency. [0003] The Massive MIMO system uses array antennas for data transmission, which can increase system capacity, improve spectrum efficiency, and enhance stability without increasing signal bandwidth and power. However, due to the large number of transmitting antennas at the base station and the limited processing capability of user equipment, precoding technology has become the main interference suppression technol...

AI Technical Summary

Problems solved by technology

[0007] Although the codebook-based precoding scheme released by 3GPP specifies two types of codebooks for different scenarios, it cannot dynamically adjust the selected scheme category under changing channel conditions.

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