Method for efficient mu-mimo transmission by joint assignments of transmission architecture, and interference alignmnet schemes using optimized user-code assignments and power-allocation

A method for communicating in a wireless communication system having a plurality of receivers and a plurality of base stations, wherein each receiver in the plurality having a multi-mode antenna with a single radio frequency (RF) chain that is operable in a plurality of antenna modes, and further wherein each base station in the plurality of base stations has one or more transmitters having a transmit antenna and being operable to communicate with one or more of receivers in the plurality of receivers using a blind interference alignment (BIA) scheme, the method comprising:

• performing downlink transmission with the plurality of base stations to transmit wireless signals to the plurality of receivers using a blind interference alignment (BIA) scheme while the plurality of receivers shift between the plurality of antenna modes in a predetermined manner, including
• operating each active base station in the plurality of base stations with an identical BIA code structure in a given transmission resource.

A wireless communication system comprising:

• a plurality of receivers, wherein each receiver in the plurality having a multi-mode antenna with a single radio frequency (RF) chain that is operable in a plurality of antenna modes, and further wherein each receiver shifts between the plurality of antenna modes in a predetermined manner;
• and
• a plurality of base stations in a cell topology to perform downlink transmissions to the plurality of receivers, each base station in the plurality of base stations having one or more transmitters having a transmit antenna and being operable to communicate with one or more of receivers in the plurality of receivers using a multi-user MIMO (MU-MIMO)-based blind interference alignment (BIA) scheme, wherein each active cluster of base stations in a plurality of clusters of base stations operates an identical BIA code structure in a given transmission resource.