상세정보
등록 직교 주파수 분할 다중화 방식의 통신 시스템의 타이밍 획득 및 반송파 주파수 오차 추정 장치 및 방법
- 출원번호
- 11521171 (2006.09.14)
- 공개번호
- 20070140104 (2007.06.21)
- 등록번호
- 8300621 (2012.10.30)
- 출원국
- 미국
- 초록
- The present invention relates to a method for timing acquisition and carrier frequency offset estimation of an OFDM communication system and an apparatus using the same.For this purpose the present invention provides a method for calculating at least one auto-correlation and calculating an observation value by performing a sliding sum on the at least one auto-correlation, and calculating a peak point of an absolute value of the observation as frame timing.In addition, the present invention provides a method for generating a third OFDM symbol that is generated by delaying a second OFDM symbol, calculating an observation value through the second and third OFDM symbols, and calculating a phase difference from a result of multiplication of the observation value and a conjugate complex value of the observation value such that a carrier frequency offset can be estimated.According to the present invention, the number of OFDM symbols is sufficient for obtaining timing acquisition with high reliability, and the offset estimation algorithm having a lower implementation complexity is provided such that superior performance is expected and carrier frequency offset with high reliability can be achieved.
- 패밀리
| 구분 | 특허 | 출원국 | KIPRIS |
|---|---|---|---|
| 등록 | 직교 주파수 분할 다중화 방식의 통신 시스템의 타이밍 획득 및 반송파 주파수 오차 추정 장치 및 방법 | 대한민국 | KIPRIS |