주파수 분할 다중화를 사용하는 무선통신 시스템에서의 적응 송수신 장치 및 그 방법
김광순, 김윤희, 안재영
- 7627050 (2009.12.01)
- Disclosed is an adaptive transmitting and receiving device and method using frequency division duplexing. A transmitter transmits a preamble or a pilot to a receiver. The receiver estimates a received SNR from the preamble or pilot, determines parameters (received log likelihood ratio parameters) of determining the distribution of the received log likelihood ratio, and feeds them back to the transmitter. The transmitter adaptively determines an antenna method, a modulation method, and a transmit power according to the parameters, and adaptively transmits traffic data to the receiver according to the determined antenna method, the modulation method, and the transmit power.
- KSP 제안 키워드
- Communication system, Frequency division, Likelihood Ratio, Log-likelihood, Modulation method, Transmit power, Wireless communication system, frequency division duplexing(FDD), log likelihood ratio(LLR), traffic data, wireless communication