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:
Jun. 14, 2011
Filed:
Apr. 11, 2008
IN Gi Lim, Daejeon, KR;
Hyung Ii Park, Daejeon, KR;
Sung Weon Kang, Daejeon, KR;
Tae Wook Kang, Daejeon, KR;
Chang Hee Hyoung, Daejeon, KR;
Jung Hwan Hwang, Daejeon, KR;
Kyung Soo Kim, Daejeon, KR;
Jung Bum Kim, Daejeon, KR;
Duck Gun Park, Daejeon, KR;
Jin Kyung Kim, Daejeon, KR;
Sung Eun Kim, Seoul, KR;
Ki Hyuk Park, Daejeon, KR;
Jae Hoon Shim, Daejeon, KR;
In Gi Lim, Daejeon, KR;
Hyung II Park, Daejeon, KR;
Sung Weon Kang, Daejeon, KR;
Tae Wook Kang, Daejeon, KR;
Chang Hee Hyoung, Daejeon, KR;
Jung Hwan Hwang, Daejeon, KR;
Kyung Soo Kim, Daejeon, KR;
Jung Bum Kim, Daejeon, KR;
Duck Gun Park, Daejeon, KR;
Jin Kyung Kim, Daejeon, KR;
Sung Eun Kim, Seoul, KR;
Ki Hyuk Park, Daejeon, KR;
Jae Hoon Shim, Daejeon, KR;
Electronics and Telecommunications Research Institute, Daejeon, KR;
Abstract
Provided are modulation and demodulation methods and apparatuses using a frequency selective baseband. The frequency modulation method includes: generating a plurality of subgroups by dividing 2N (N is a real number) spread codes used for frequency spreading into 2M (M<N, M is a real number) spread codes; selecting P(P is a real number) subgroups among the generated subgroups; acquiring P spread codes by inputting M data bits to each of the p subgroups so as for 1 spread code to be selected among the 2M spread codes of each subgroup; and selecting dominant value among the acquired P spread codes to generate transmitting data including the dominant value. Accordingly, it is possible to increase a processing gain of the entire system, to increase a transmission data rate, and to reduce power consumption of the system.