Advanced Digital Broadcast S.a.

Piotr Grzelka

Adam Macugowski

Robert Gizycki

Krzysztof Goraczkowski

A method for accessing a wireless channel by a device () that intends to transmit data, wherein access to channel is controlled by a wireless channel controller (), the method comprising: registering the device () at the wireless channel controller () as an authorized device; synchronizing () a timer of the device () indicating time windows; determining () a designated time window during which the device () can transmit data; performing () a clear channel assessment procedure during the preceding time window such that the clear channel assessment ends at the end of the time window preceding the designated time window; and beginning transmission () of data at the beginning of the designated time window.

Method and a system for accessing a wireless channel in a dense environment

A method and system for determining parameters of a satellite signal present in a coaxial cable, the method including the steps of aligning two capacitive coupling sensors in proximity to a length of the coaxial cable, wherein the distance between the capacitive coupling sensors is below 10 centimeters; receiving from two capacitive coupling sensors a signal being a differential voltage in the coaxial cable between the locations of the capacitive coupling sensors wherein the voltage is relative to a voltage level in a coaxial cable; amplifying the differential voltage by a bandpass amplifier; detecting a valid DiSEqC command sequence being indicative of signal quality.

Method and system for determining parameters of a satellite signal

A device for monitoring a signal, comprising: a combiner () configured to combine the received signal to be monitored with an impairment signal; a signal spectrum analyzer () configured to analyze spectrum of a signal output from the combiner () upon receiving a trigger signal; a signal quality analyzer () configured to analyze the signal output from the combiner and output a signal quality factor; a trigger generator () configured to monitor the signal quality factor and output the trigger signal upon detecting the signal quality factor below a trigger threshold level; and an impairment simulator () configured to generate the impairment signal and an impairment scaler () configured to scale the impairment signal and input the scaled impairment signal to the combiner ().

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Zielona Gora, Poland

Piotr Grzelka