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특허 검색
구분 출원국
출원년도 ~ 키워드


등록 빔 형성 방법 및 장치

빔 형성 방법 및 장치
이미지 확대
권동승, 최인경, 예충일, 李忠容, 姜智源
12517753 (2007.10.10)
20100322223 (2010.12.23)
8243707 (2012.08.14)
The present invention relates to a method of forming a random beam, and a beam forming apparatus. A quantization preprocessor and a random unitary matrix having a predetermined pattern are used to form a beam on a mobile terminal. A base station forms a beam using a codeword index of a quantization codebook received from a mobile terminal and channel quality information corresponding to the codeword index, and the mobile terminal generates the codeword index and the channel quality information using pilot signals generated by the base station. The number of pilot signals is equal to the number of transmitting antennas. Therefore, a codebook that has been known to both the mobile terminal and the base station is used, and the mobile terminal can select the codeword index for quantization, which makes it possible to selectively give diversity and thus improve the system efficiency.
KSP 제안 키워드
Channel Quality Information, Quantization codebook, System Efficiency, base station(BS), beam-forming, channel quality, mobile terminal, number of transmitting antennas, transmitting antennas, unitary matrix