The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 03, 1996
Filed:
Dec. 20, 1994
Carel J Van Driel, Eindhoven, NL;
Atul N Sinha, Eindhoven, NL;
U.S. Philips Corporation, New York, NY (US);
Abstract
In a multiple access network, signals transmitted by a plurality of secondary stations to a primary station are to be distinguished by the primary station. One method for realizing this is by the use of Sub-Carrier Multiple Access (SCMA). According to the method of SCMA, a transmit signal is modulated on a subcarrier having its own frequency and then amplitude modulated on a main carrier in each secondary station. To reduce a mutual disturbance by the secondary stations in SCMA, according to the present invention, a transmit signal is converted into high-speed bursts of a transmit signal. As a result, fewer secondary stations on average are active, so that the mutual disturbance by the secondary stations will diminish.