Frequency selective modulating apparatus and method using re-spreading code

• Main Authors: KIM KYUNG SOO, PARK KYUNG HWAN, CHOI BYOUNG GUN, HWANG JUNG HWAN, KIM JUNG BUM, PARK HYUNG II, HYUN SEOK BONG, KANG TAE YOUNG, KIM SUNG EUN, KANG SUNG WEON, KANG TAE WOOK, HYOUNG CHANG HEE, LIM IN GI, KIM JIN KYUNG
• Format: Patent
• Language: English
• Published: 03.12.2013
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION

A frequency selective modulation apparatus and method using re-spreading codes are disclosed. The frequency selective modulation apparatus includes: a serial-to-parallel converter receiving transmission data and performing serial-to-parallel conversion on the transmission data at a pre-set ratio; one or more sub-frequency selective spreaders selecting one spreading code by using data bits received from the serial-to-parallel converter; a majority value selection unit selecting a majority value from one or more spreading codes which have been selected by each of the one or more of the sub-frequency selective spreaders; and a first XOR logic circuit XORing an output of the majority value selection unit and a re-spreading code Wn to re-spread a frequency selective baseband to a frequency selective passband.