직교 주파수 분할 다중 접속 시스템의 주파수 오프셋 보상 장치 및 그 방법
박형숙, 김준우, 손경열, 박윤옥
- 8005182 (2011.08.23)
- The present invention relates to an apparatus and method of compensating for a frequency offset in an orthogonal frequency division multiple access system that is capable of efficiently estimating and compensating for the frequency offset. A receiver of the orthogonal frequency division multiple access system can individually estimate a fractional frequency offset and an integer frequency offset by using a downlink preamble signal. Further, the receiver can compensate for the frequency offset by adding the integer frequency offset once after completely compensating for the fractional frequency offset. Therefore, it is possible to efficiently compensate for the frequency offset.
- KSP 제안 키워드
- Fractional frequency, Frequency division, Frequency division multiple access(FDMA), Integer Frequency Offset, Orthogonal Frequency Division Multiple Access(OFDMA), fractional frequency offset, frequency offset, multiple access, preamble signal