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:
Feb. 18, 1997
Filed:
Dec. 27, 1994
Je-Woo Kim, Suwon, KR;
Jong-Hyeon Park, Seoul, KR;
SamSung Electronics Co., Ltd., Suwon, KR;
Abstract
Disclosed is a link access apparatus of a CDMA system using a DS/SS communication method, and more particularly an up-link access apparatus which overcomes a near/far problem occurring when mobile stations and a base station perform multiple access communication using code division. An up-link access apparatus in a DS/SS-CDMA system has a transmitter for mixing data to be transmitted to a base station with a PN code unique to that mobile station to thereby PN code modulate the data. The transmitter then mixes the PN code modulated data with a carrier having a frequency that is shifted by an identification frequency to thereby output a spread spectrum signal. The apparatus further includes a receiver for mixing a demodulation carrier made up of the PN code and the identification frequency with the spread spectrum signal from the transmitter to thereby output a mixed signal. The mixed signal is then integrated according to a period having a reciprocal corresponding to the identification frequency, demodulated and output as a digital signal.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile