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. 14, 2021
Filed:
Aug. 11, 2014
Interdigital Ce Patent Holdings, Paris, FR;
John Sidney Stewart, Indianapolis, IN (US);
Max Ward Muterspaugh, Westfield, IN (US);
INTERDIGITAL CE PATENT HOLDINGS, Paris, FR;
Abstract
Methods and apparatuses are provided with a solution to adjacent channel interference when a multi-carrier modulation system (e.g., OFDM) replaces a legacy modulation system and co-exists with it for a period of time. The adjacent channel interference can be reduced by blocking (setting to 0) and not using some of the carriers at the edge of the spectrum during the transition period. This effectively reduces the bandwidth of the channel and consequently, the adjacent channel interference caused by the multi-carrier signal. However, at some point in time, the legacy system will be turned off and the adjacent channel interference into the original channels will no longer be important. The present principles propose a mechanism to allow for the unblocking of the removed carriers once the interference problem becomes less strict.