SIMULTANEOUS CALL TRANSMISSION DETECTION

• Main Authors: NOBLE, Paul Andrew, PHILLIPS, Desmond Keith
• Format: Patent
• Language: English; French; German
• Published: 05.05.2021
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; MULTIPLEX COMMUNICATION; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

A method of determining the presence of a secondary carrier signal in a time-domain sum-signal including a primary carrier signal is disclosed, the method comprising: transforming the sum-signal into the frequency domain; extracting at least one peak corresponding to a heterodyne tone from the trans...