Receiver design method for spatial pattern segmentation multiple access technology

Abstract

The invention discloses a receiver design method for a spatial pattern segmentation multiple access technology.The method comprises the following steps that 1, pattern detection is conducted on a received signal, and when it is determined that the received signal is a pattern jointly multiplexing a beam domain and a power domain, the received signal is transmitted to a composite receiver; 2, the received signal is quantified, interference among wave beams is restrained through a spacial filter, and a scalar signal is obtained; 3, the scalar signal is subjected to normalization processing, and a multiple-input-multiple-output channel is subjected to dimension reduction to be a single-input-single-output channel; 4, for the scalar signal subjected to normalization processing, interference in wave beams is removed through a sequence interference eliminator, and a target signal is obtained; 5, the signal to interference plus noise ratio of the target signal is calculated.According to the composite receiver design method, the spatial multiplexing characteristic of the spatial pattern segmentation multiple access technology is fully utilized, the received signal can be correctly detected, and the complexity is low.

Description

technical field [0001] The invention relates to a design method for a receiver of an airspace pattern division multiple access technology, which belongs to the multiple access technology in a mobile communication system. Background technique [0002] With the explosive growth of mobile data traffic and the rapid growth of the total number of devices connected to mobile communication networks, future mobile communication systems will face enormous challenges in terms of system speed and device access capacity. As one of the key technologies of the future mobile communication system, the new orthogonal multiple access technology has become the focus of the industry. [0003] The airspace pattern segmentation multiple access technology realizes the multi-domain multiplexing of resources based on the beam domain, and combines the non-orthogonal multiple access technology with the large-scale antenna array technology, which brings great advantages in terms of system rate and equi...

AI Technical Summary

Problems solved by technology

[0004] However, the multi-domain superposition signal of the spatial domain pattern division multiple access technology has brought great challenges to the detection technology at the receiving end

On the one hand, the received signal is not only superimposed on the beam domain to form inter-beam interference, but also superimposed on the power domain to form intra-beam interference. Therefore, it is difficult for a single multi-user detection technology to effectively deal with these interferences

On the other hand, at present, nonlinear detection methods are often used in receiver design of non-orthogonal multiple access technology, and nonlinear detection methods have relatively high complexity. Therefore, it is necessary to fully consider the spatial domain pattern division multiple access Features of the technique, method for designing low-complexity receivers

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