Apparatus and method for low complexity spatial division multiple access in a millimeter wave mobile communication system

摘要

A system is configured to perform Spatial Division Multiple Access. The system includes at least one transmitter or receiver capable of polarization alignment. The transmitter includes a baseband precoder configured to precode a signal, an array of sub-array antennas and a plurality of radio frequency (RF) chains. Each RF chain is coupled to a respective antenna sub-array of the array of antennas. The transmitter is configured to perform a method that includes precoding, by a baseband precoder, a signal for spatial division multiple access (SDMA). The method also includes applying, by each of the plurality of radio frequency (RF) chains, a phase shift and beamforming weight to the signal and transmitting the phase shifted and weighted signal by an array of sub-array antennas.

主权项

1. For use in a wireless communication network, a transmitter comprising:
a baseband precoder configured to precode a plurality of input signals; a plurality of Radio frequency (RF) chains; an array of sub-array antennas, wherein each of the plurality of RF chains configured to apply a phase shift and beamforming weight to one of the plurality of input signals, wherein each of the plurality of RF chains is coupled to a respective sub-array antenna of the array of sub-array antennas, wherein the baseband precoder and the plurality of RF chains are configured to apply a gain based on a direction of transmission of each of the plurality of input signals, and wherein the transmitter is configured to apply a plurality of RF beamforming weights and a plurality of digital beamforming weights to provide a plurality of signals to a plurality of users.