Frequency modulating apparatus and transmitting apparatus including the same, and frequency demodulating apparatus and receiving apparatus including the same
Provided are a frequency modulation/demodulation apparatus using a frequency selective baseband and a transmitting/receiving apparatus using the same. In a frequency selective baseband transmission technique or an FS-CDMA technique, a transmission rate is controlled according to communication channel environment, spread code groups are repeatedly selected in a receiving side so as to obtain a frequency diversity gain. Accordingly, it is possible to reduce interference between users. In addition, even in a case where strong interference induced from electronic exists, it is possible to implement low-power, stable human-body communication and to ensure a communication quality.
Electronics and Telecommunications Research Institute
H H
H04L H04B
inventional inventional
Sung Eun Chang Hee Duck Gun Tae Wook Jae Hoon In Gi Sung Weon Ki Hyuk Jung Bum Jung Hwan Jin Kyung Kyung Soo Hyung Il
Kim Hyoung Park Kang Shim Lim Kang Park Kim Hwang Kim Kim Park