Abstract: An apparatus, system, method and computer program product for digital beamforming in the IF domain. The beamforming technique of the present invention can be implemented in general point-to-multipoint wireless networks to significantly increase bandwidth in both the downlink and uplink directions. This beamforming technique allows for a modular design of a smart antenna system which typically includes an antenna array, a multiple number of transceivers, IF beamformers, and a set of modems.

Abstract: A variable bandwidth broadband wireless access system and method employs flexible headend and CPE configurations that use standard bandwidth allocation devices to split bandwidth between a plurality of modems. Compact PCI cards or ATCA cards at the headend interface with a plurality of PTMC standard-based mezzanine card modems to allocate the headend bandwidth between headend and CPE radio transceivers. PCI cards allocate CPE bandwidth from a plurality of CPE modem cards. The headend can optionally include a digital beamformer between the headend modems and a plurality of headend radio transceivers attached to an antenna array. Bandwidth allocation can be software controlled and new capabilities can be added through the addition of any required modem cards or radios at the headend and CPE locations.

Abstract: An apparatus, system, method and computer program product for digital beamforming in the IF domain. The beamforming technique of the present invention can be implemented in general point-to-multipoint wireless networks to significantly increase bandwidth in both the downlink and uplink directions. This beamforming technique allows for a modular design of a smart antenna system which typically includes an antenna array, a multiple number of transceivers, IF beamformers, and a set of modems.