Texas Instruments Corporation

Raytheon Company

William P Golemon

Henry Stephen Eilts

Ronald L Meyer

Ramaiah Velidi

The present invention relates to a transmit diversity antenna system employing active antenna electronics (with both receive and transmit amplifiers distributed among the elements of the antenna), polarization diversity on receive, and polarity diversity along with time delay diversity on transmit. The combination of these three techniques, in wireless communications applications, improves the efficiency and performance of both the transmitted and received signals at a base station, as well as the received signal at the mobile. In practice the present invention enables a substantially &ldquo;balanced link&rdquo; to exist between the base station and a mobile.

Wireless communications system

A system for wireless communication between a base station,and one or more remote stations,and,wherein a desired signal has associated therewith an identifier tone (a SAT in the vernacular of the AMPS system) and wherein interfering signals may have associated therewith identifier tones at different frequencies. A superresolution technique is used in the system to process the received data and to determine the relative magnitudes of any identifier tones which may be present in the received data. In the disclosed embodiment, the superresolution technique utilized is a least square error process. The resulting estimates are used by the system to facilitate the communication function.

System for superresolution based estimation of control signals in a communications system

A system for wireless communication between a base station 30 and one or more remote stations 32 and 34 wherein the beam pattern of the receiving antenna 50-52 can be adaptively formed to track a desired signal. A series of weights is applied, one to each output of the elements of the receiving antenna and the weighted output summed to form the antenna output. The weights are adaptively modified so as to focus the beam in the direction of one of many signals which may be present in the data received by the antenna. A least-square-error process is used to identify if the signal beamed on is the desired signal. If such is not the case, the weights are modified to null out the earlier signal and to focus the pattern on another signal.

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Plano, TX, United States of America

William P Golemon