4개의 송신 안테나가 있는 이동통신 시스템에서 공간 시간 부호의 검출 방법
방영조, 김일민, 김대호, 방승재, 박윤옥, 안지환, 유창완
- 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.
- KSP 제안 키워드
- Communication system, Space time(ST), Space-time codes, maximum likelihood, mobile communication, mobile communication system, specific structure, sphere decoding, transmitting antennas