Method and system for inhibiting overlapping interference between wave beams in multiple address system

Abstract

The invention discloses a method and system for inhibiting overlapping interference between wave beams in a multiple address system and relates to mobile communication technology. Space division and code division are effectively combined, spatial information of wireless channel is fully utilized, correlation detection is carried out on accessed user in real time, strong correlation users are dynamically grouped, and beam forming is carried out for dynamic tracking and covering on user grouping; and correlation detection is carried out on the formed wave beams in real time, orthogonal code is distributed for adaptation of relevant wave beams, so as to effectively inhibit mutual interference between wave beams. The formed wave beams are identified by spatial and orthogonal code characteristic, thus realizing improvement of system capacity, communication quality and frequency spectrum utilization.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to the multiple access technology in the mobile communication technology. Background technique [0002] The design concept of space division multiple access (SDMA) technology is to realize user access by dynamically identifying, locating and tracking through multiple high-gain narrow beams respectively corresponding to multiple desired users. However, in practical applications, if one beam is used to access one user, as the number of users increases, the number of beams will increase accordingly, which will increase the system load and put forward higher requirements for system processing capabilities. When the number of users increases to a certain number, if the above-mentioned multiple access scheme technology is still used, the application of the smart antenna technology in the cellular mobile communication system will become impractical. In order to make full use ...

AI Technical Summary

Problems solved by technology

[0004] The present invention designs a multiple access system and method using space division and code division for the above-mentioned packet coverage defects and beam overlap interference problems of the existing space division multiple access (SDMA) technology

On the other hand, the code division feature is introduced. When overlapping interference occurs between beams, orthogonal codes are adaptively assigned to beams, and beams are identified with orthogonal codes to solve the problem of overlapping interference between beams.

Images