Apparatus and method for symbol error correctable modulation and demodulation using frequency selective baseband
Provided are a method and apparatus using a frequency selective baseband. Symbol-error correction modulation and demodulation is performed by generating a plurality of subgroups by dividing 2N spread codes or orthogonal codes used for frequency spreading into 2M (M<N) spread codes or orthogonal codes; selecting (P+L) subgroups; acquiring P spread codes by inputting M data bits to each of the selected P subgroups to select one spread code among the 2M spread codes of each subgroup; generating L*M parity bits for symbol error correction using P*M data bits inputted to the selected P subgroups; selecting one spread code among the 2M spread codes of the L subgroups by inputting the L*M parity bits to the L subgroups; and selecting the dominant values among the (P+L) spread codes acquired from the (P+L) subgroups to generate transmitting data including the dominant values, where N, M, P, and L are real numbers.
Electronics and Telecommunications Research Institute
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inventional inventional inventional
Sung Weon Jin Kyung Kyung Soo Duck Gun Hyuk Sung Eun Jung Bum In Gi Hyung Il Tae Wook Jung Hwan Ki Hyuk Chang Hee
Kang Kim Kim Park Kim Kim Kim Lim Park Kang Hwang Park Hyoung