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특허 검색
구분 출원국
출원년도 ~ 키워드


등록 4개의 송신 안테나가 있는 이동통신 시스템에서 공간 시간 부호의 검출 방법

4개의 송신 안테나가 있는 이동통신 시스템에서 공간 시간 부호의 검출 방법
이미지 확대
방영조, 김일민, 김대호, 유창완, 방승재, 박윤옥, 안지환
11930013 (2007.10.30)
20080137781 (2008.06.12)
7899138 (2011.03.01)
The present invention relates to a method of detecting a space-time code in a mobile communication system. When detecting a space-time code B for a plurality of transmitting antennas, an ML (maximum likelihood) metric, which is generally calculated by using a specific structure of a matrix B, is defined as a new ML metric by reducing a variable of the ML metric. Two dependent sphere decoding processes are performed and an intersection of the decoding results is calculated, and a signal is detected from the ML metric. Therefore, since detection of the space-time code B for the plurality of transmitting antennas is performed by using the newly defined ML metric, an amount of matrix calculated can be reduced, and a calculation amount can be reduced by performing the two dependent sphere decoding processes. Further, since a detection order of symbols is changed according to a channel situation, it is possible to improve the performance of the system.