Texas Instruments Corporation

Autotalks Ltd.

Nir Sasson

Alon Elhanati

Uri Garbi

Naftali Sommer

Yigal Bitran

Naor Goldman

Adam Lapid

Raanan Yechezkel

Oded Melamed

Apparatus and methods for efficient external control of the transmit power of a remote fixed gain antenna unit in RF communications. Apparatus embodiments include a separate feeding unit coupled to a remote fixed gain antenna unit through a single coaxial line. The feeding unit is operative to provide transmit control signals to the remote antenna unit based on power feedback created in the remote antenna unit and sent to the feeding unit over the single coaxial line. Feedback and transmit/receive control inputs are transmitted through the single coax line together with RF signals. The coax line may be long. The apparatus and methods may be used in a vehicular environment.

Remote antenna unit with external power control using a single control line

A system and method of removing discrete spurious signals in cable broadband environments as well as in other RF environments employs either non-decision directed or decision directed techniques in order to remove the discrete spurious signals. The non-decision directed technique converts the signal of interest such that the spurious signal's frequency is approximately zero, filters out the converted spurious signal, and then reconverts the signal of interest back to its original location. The decision directed technique employs a decision mechanism such as a slicer to regenerate a spurious signal that is subtracted from the signal of interest containing the actual spurious signal such that the actual spurious signal is removed from the signal of interest.

System and method of removing discrete spurious signals in cable broadband and other RF environments

A technique associated with transceiver systems solves transmitter impairments when the system has both receiver and transmitter operating with the same local oscillator frequency but with independent phase and gain impairments.

Method of fixing frequency complex up-conversion phase and gain impairments

A method is provided for equalization of nonlinear distortion in a distorted signal comprising the steps of: digitizing the distorted signal and passing the digitized distorted signal through an inverse non-linear transfer function to equalize the nonlinear distortion. Other systems and methods are disclosed.

Method and system for digital equalization of non-linear distortion

A sampling method implements direct RF sampling of the down-stream DOCSIS and Euro-DOCSIS cable plant signals present at the customer premises equipment (CPE).

Direct RF sampling for cable applications and other broadband signals

An improved receiver is provided having a voltage controlled amplifier for adjusting the gain of a first input signal, a comparator and integrator for controlling the voltage controlled amplifier and connected to the output of the voltage controlled amplifier and connected to a second input signal, a cross-correlator connected to the output of the voltage controlled amplifier and the second input signal, first auto correlator connected to the output of the voltage controlled amplifier, a second auto correlator connected to the second input signal, a first mixer connected to the cross-correlator and the output of the voltage controlled amplifier for providing a correction signal to the signal output by the second auto correlator, and a second mixer connected to the cross-correlator and the second input signal for providing a correction signal to the signal output by the first auto correlator.

Growing community of inventors

Ein-Sarid, Israel

Nir Sasson