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:
Sep. 19, 2006
Filed:
Mar. 05, 2004
Vlad Mitlin, San Diego, CA (US);
Vlad Mitlin, San Diego, CA (US);
Other;
Abstract
In accordance with the present invention, there are provided methods for estimating the level of interferers and the level of a useful signal in a spectral window of a given bandwidth in a communications channel in a complex multipath propagation environment. The first method of estimating the level of interferers comprises generating and transmitting several sets of sine waves on the Nyquist frequency. Each set is characterized by a certain phase so that the sequence of phase values evenly spans the interval (0, 2π) radians. The second method comprises generating and transmitting several sets of sine waves of the same phase, with frequencies evenly spanning a vicinity of the Nyquist frequency. The method of estimating the level of a useful signal comprises transmitting several repetitions of the signal used for actual data transmission and processing it by the receiving station.