상세정보
등록 부채널수 변화에 따른 이득값 조절이 가능한 직교주파수분할다중접속 시스템의 송신장치 및 그 장치에서의 데이터 송신방법
- 출원번호
- 11667938 (2005.09.07)
- 공개번호
- 20070291633 (2007.12.20)
- 등록번호
- 7953165 (2011.05.31)
- 출원국
- 미국
- 초록
- The present invention relates to a transmitter of an OFDMA system capable of controlling a gain for variation of subchannel allocation, and a method thereof. The transmitter includes a subchannel number determining unit, a modulator, a digital/analogue converter, and a gain controller controlling the gain. The subchannel number determining unit determines the number of subchannels in use according to communication environments, and the modulator modulates transmission data with reference to the number of subchannels determined by the subchannel number determining unit and outputs the modulated transmission data. The digital/analogue converter converts the transmission data into analogue data and transmits the converted analogue data through a transmit antenna. The gain controller controls gains of the transmission data according to gain values corresponding to the number of subchannels.
- KSP 제안 키워드
- Channel Allocation, Frequency division, Frequency division multiplexing, Orthogonal Frequency Division Multiple Access(OFDMA), Orthogonal frequency division Multiplexing(OFDM), Sub-channel allocation, Sub-channels, division multiplexing, transmit antennas