Treble Investments Limited Liability Company

Airnet Communications Corporation

Other

John R Noll

Jeffrey Wilson Smith

Michael A Komara

Christopher J Peters

Brady Gaughan

Shannon Tomarchio

Thomas R Schmutz

Terry L Williams

John F Schwaller

Mark Nelson

A base transceiver station including a transceiver unit is provided. A method of calibration uses a transceiver unit to receive an RF signal, measure a calibration value, and transmit the measured value. The calibration value is used to determine weighting parameters to compensate for relative RF path phase delay and amplitude variation.

Method to calibrate RF paths of an FHOP adaptive base station

A spectrally efficient wireless communication system that includes a plurality of base stations communicating indirectly with a plurality of wireless communications devices through a plurality of repeaters. The method can generally comprise communicating indirectly between a first base station and a wireless communication device using a first repeater and a first RF backhaul link. A control processor associated with the first base station can control a first smart antenna system. The system selectively configures the first smart antenna system to spatially isolate communications on the first RF backhaul from communications on a second RF backhaul of a second repeater.

Method for improving RF spectrum efficiency with repeater backhauls

A method () for amplitude equalization in transmit and receive levels in a base station wideband transceiver () includes the step of assigning () a plurality of transmit and receive carrier frequencies to the base station wideband transceiver and the step of flattening () the power in the plurality of transmit and receive carrier frequencies in the plurality of base wideband transceivers using software amplitude pre-distortion.

Method and apparatus for equalization in transmit and receive levels in a broadband transceiver system

A method for calibration of RF paths of a frequency hopping adaptive base transceiver station is provided. The method of calibration calibrates a wireless cellular telecommunication system with a frequency hopping adaptive base transceiver station including an adaptive antenna array with two or more RF traffic transceiver apparatus chains. The wireless cellular telecommunication system communicates with mobile units on a frequencies defined by a hop list. The method of calibration includes the step of periodically interrupting a frequency hopping process of the frequency hopping adaptive base transceiver station while calls are in progress. The method of calibration further includes the step of calibrating an antenna transmit path for a RF traffic transceiver apparatus chain at a frequency selected to include one or more frequencies in the hop list to determine a set of weighting parameters for the antenna transmit path at the one or more frequencies. A self-calibrating frequency hopping adaptive base transceiver station is also provided.

Method for transferring service for a mobile station call signal from a first base transceiver station to a second base transceiver station in a wireless mobile telecommunication system, while a call is in progress. The method can include receiving at a base transceiver station an access burst from a mobile station with a call already in progress and requiring service from the base transceiver station. Based on the received access burst, the base transceiver station can electronically steer a beam of an adaptive antenna array of the base transceiver station toward a location of the mobile station.

Mobile station handover for base stations with adaptive antenna system

Apparatus and method to perform the real-time correction of differential non-linearities in a broadband wireless transceiver system using a digital look-up table. Initially, the values for the digital look-up table are determined prior to full operational use of the broadband transceiver system. The one set of values represents inverse response of the transfer function of the D/A converter. The other sets of values represents the inverse response of the transfer function for each A/D converter. The inverse response values for the D/A and A/D converters are stored in a non-volatile memory. During initialization of the broadband transceiver system, the values of the inverse response of the transfer function for the D/A converter are transferred from the non-volatile memory to a high speed memory. The values of the inverse response of the transfer function for each A/D converter is also transferred to another set of high speed memory. For a transmitting signal, the signal is used as an address into the high speed memory to output a corrected value for the D/A converter. For a received signal, each output from the A/D converters is used as an address into each high speed memory. The output from each high speed memory is a corrected value for the respective A/D converter.

METHOD AND APPARATUS TO REDUCE SPURIOUS AND INTERMODULATION PRODUCTS IN WIRELESS BROADBAND MULTI-CARRIER DIGITAL TRANSCEIVER EQUIPMENT THROUGH STATIC NON-LINEARITY CORRECTION OF DIGITAL CONVERSION COMPONENTS

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Satellite Beach, FL, United States of America

John R Noll