상세정보
등록 ＭＩＭＯ－ＯＦＤＭ 시스템에서 타이밍 에러와 주파수 오프셋을 추정하는 방법 및 그 장치
- 출원번호
- 11636799 (2006.12.11)
- 공개번호
- 20070183518 (2007.08.09)
- 등록번호
- 7778338 (2010.08.17)
- 출원국
- 미국
- 초록
- The present invention relates to a method and device for estimating a timing error and a frequency offset in the MIMO mobile communication system. In a system including a plurality of transmit antennas and a plurality of receive antennas, a predetermined preamble symbol is inserted into a frame to be transmitted by a transmitting device, and pseudo noise is multiplied to the preamble symbol, and result signal is transmitted through each transmit antenna. A receiving device receives the signal through each receive antenna, extracts a preamble symbol from the OFDM symbol, and multiplies local pseudo noise that corresponds to the pseudo noise used by the transmitting device and is shifted by the extracted preamble symbol. A timing error is estimated and compensated according to the correlation of the pseudo noise of the transmitting device and the local pseudo noise of the receiving device. A frequency offset is estimated and compensated according to the phase difference between the preamble symbols. Therefore, the system is realized in a simpler manner and timing error and frequency offset estimation and compensation performance is further improved.
- 패밀리
| 구분 | 특허 | 출원국 | KIPRIS |
|---|---|---|---|
| 등록 | ＭＩＭＯ 이동 통신 시스템에서 타이밍 에러와 주파수 오프셋을 추정하는 방법 및 그 장치 | 대한민국 | KIPRIS |