MULTI-CARRIER CDMA RADIO TRANSMITTING METHOD AND APPARATUS, AND CHANNEL ESTIMATION METHOD AND APPARATUS FOR MULTI-CARRIER CDMA RADIO TRANSMITTING SYSTEM

摘要

PURPOSE: A multi-carrier CDMA radio transmitting apparatus is provided to enable radio information transmission at variable transmission rates for respective users. CONSTITUTION: The multi-carrier CDMA radio transmitting apparatus has signal generating circuits(100(1) through 100(n)) for respective users. The signal generating circuits(100(1) through 100(n)) generate signals for the respective users, each of which includes a transmitting data generating part(11) generating transmitting data in a predetermined form from information to be distributed to a respective user, a channel encoder(12) encoding the transmitting data from the transmitting data generating part(11) in accordance with a predetermined algorithm, a serial-to-parallel converting circuit(13) converting information symbols output from the channel encoder(12) in serial into parallel information symbols, and a plurality of spreading modulation parts(14(1) through 14(m)) rendering spreading modulation along the frequency axis on the information symbols output in parallel from the serial-to-parallel converting circuit(13).