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. 08, 2009
Filed:
Feb. 05, 2004
Jong Heon Kim, Seoul, KR;
Jong Heon Kim, Seoul, KR;
LG Electronics Inc., Seoul, KR;
Abstract
Disclosed is an apparatus for coherent combining type demodulation and method thereof, in which a multi-path reception signal is demodulated by a coherent combining method in case that a transmitted signal, which was spread and modulated by such an orthogonal code as Walsh code, is received via multi-paths in the course of transmission and by which loss is more reduced than that of modulation of a non-coherent combining method. The modulation according to the coherent combining method needs a pilot signal. Yet, there exists no pilot signal on a reverse link of IS-95A. Hence, the present invention basically generates a phase reference signal or a decision directed pilot signal instead of the pilot signal to perform coherent combining using the phase reference signal or the decision directed phase signal.