A Wavelet Resolution Processing Method Based on Angle Entropy

Abstract

The invention discloses a wavelet discrimination processing method based on angle entropy, comprising: receiving multiple groups of signals sent by a base station; , if it is less than , use the angle entropy to divide the first signal and the second signal into a group; judge whether the power ratio of the grouped first signal and the second signal is 5:5 or 6:4, if No, the serial interference cancellation detection algorithm is used to distinguish the first signal and the second signal; the present invention groups according to the angle entropy, reduces the number of users in each group, and overcomes the traditional wavelet beamforming algorithm in the case of close angles , the shortcomings of indistinguishable, the existing wavelet beamforming algorithm has been improved to improve the resolution of the angle of arrival.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a wavelet resolution processing method based on angle entropy. Background technique [0002] With the increase in the number of end users and the rapid development of mobile services such as the Internet of Things, the demand for various application fields of wireless networks has shown explosive growth, so wireless communication systems have put forward higher requirements for capacity and spectrum utilization. The traditional orthogonal multiple access method is difficult to provide enough access users, so the non-orthogonal multiple access (NOMA) technology is more and more adopted, such as 5G mobile communication system. However, the non-orthogonal characteristics lead to serious multiple access interference in signal detection compared with the orthogonal signal system. Therefore, the non-orthogonal multiple access technology in the power domain is generally used, and t...

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Problems solved by technology

However, the non-orthogonal characteristics lead to serious multiple access interference in signal detection compared with the orthogonal signal system, so non-orthogonal multiple access technology is generally used in the power domain, through SI serial interference cancellation detection (SIC) Or Parallel Interference Cancellation (PIC) algorithm for signal detection. Both algorithms have their own advantages and disadvantages. At present, the SIC algorithm is favored because of its simplicity and easy implementation, and has become the preferred solution for non-orthogonal multiple access detection technology. When the number of users is large, due to the cumulative effect of detection errors, the error will become larger and larger, so it is not suitable for occasions with a large number of users

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