摘要 |
Disclosed is a demodulation apparatus for receiving signals by an adaptive modulation and coding method, and demodulating the signals, in an OFDMA based packet communication system, comprising: a QAM demapper for performing QAM demapping to the received signals by a modulation method using a maximum modulation ratio, until modulation methods for each of sub-channels are analyzed; a slot buffer for storing the data outputted from the QAM demapper; a channel decoder for decoding the data stored in the slot buffer and analyzing modulation methods for each sub-channels and transferring the analyzed modulation methods to the QAM demapper; and in at the same time, reading valid data from the data stored in the slot buffer, based on the analyzed modulation methods for each sub-channels, and demodulating the valid data. |
申请人 |
UTE ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTIT;SAMSUNG ELECTRONICS CO., LTD.;KT CORPORATION;SK TELECOM CO., LTD.;KTFREETEL CO., LTD.;HANARO TELECOM, INC.;KIM, JUN-WOO;KIM, YOUNG-HOON;CHAE, SU-CHANG;PARK, YOUN-OK |
发明人 |
KIM, JUN-WOO;KIM, YOUNG-HOON;CHAE, SU-CHANG;PARK, YOUN-OK |