Modulators – Frequency modulator
Reexamination Certificate
2011-06-14
2011-06-14
Mis, David (Department: 2817)
Modulators
Frequency modulator
C329S315000, C375S146000, C375S147000
Reexamination Certificate
active
07961061
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.
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Hwang Jung Hwan
Hyoung Chang Hee
Kang Sung Weon
Kang Tae Wook
Kim Jin Kyung
Electronics and Telecommunications Research Institute
Mis David
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