Systems and methods to enhance spatial diversity in distributed input distributed output wireless systems
AssigneeRearden, LLC
InventorsAntonio Forenza, Timothy Anders Pitman, Benyavut Jirasutavasuntorn, Robert J. Andrzejewski, Stephen G. Perlman
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Abstract
Systems and methods are described for enhancing the channel spatial diversity in a multiple antenna system (MAS) with multi-user (MU) transmissions (“MU-MAS”), by exploiting channel selectivity indicators. The proposed methods are: i) antenna selection; ii) user selection; iii) transmit power balancing. All three methods, or any combination of those, are shown to provide significant performance gains in DIDO systems in practical propagation scenarios.
Claims33
A method implemented within a wireless power transmission system comprised of a plurality of wireless client devices, a base station, and a plurality of distributed antennas communicatively coupled to the base station comprising:
- simultaneously transmitting pre-coded radio signals from the plurality of distributed antennas, the pre-coding creating deliberate radio frequency interference comprising a controlled constructive and destructive interference of radio frequency (RF) waveforms so as to enable wireless power reception upon each receiving antenna and resulting in a simultaneous plurality of non-interfering channels within a common frequency between the plurality of distributed antennas and the plurality of wireless client devices.
A wireless power transmission system comprising:
- a plurality of wireless client devices;
- one or more base transceiver stations (BTSs);
- a plurality of distributed antennas communicatively coupled to the BTSs over a base station network (BSN), wherein the BTSs precode RF waveforms for simultaneous transmission from each of the distributed antennas to the plurality of wireless client devices, the precoding creating deliberate radio frequency interference comprising a controlled constructive and destructive interference of RF waveforms so as to enable wireless power reception upon each receiving antenna and resulting in a simultaneous plurality of non-interfering channels within a common frequency between the plurality of distributed antennas and the plurality of wireless client devices.
Dependencies are inferred from the claim text.