직교주파수 분할 다중접속과 단일 반송파 주파수분할 다중접속을 혼용하기 위한 파일럿 송신장치 및 그 방법
노태균, 정병장, 임민중, 정현규, 이효진
- 9071391 (2015.06.30)
- Provided are a pilot transmitting apparatus and method capable of selectively using an OFDMA scheme and an SC-FDMA scheme. The pilot transmitting apparatus includes a pilot inserter for inserting a pilot signal in a modulated symbol and inserting a cyclic prefix code for the inserted pilot signal, an FFT processor for receiving symbols with a pilot inserted thereto from the pilot inserter and performing an FFT process on the received symbols, an IFFT processor for receiving the transformed data from the FFT processor and performing an IFFT process on the transformed data, a mapping processor for mapping the output of the FFT processor to input positions of the IFFT processor to load the frequency domain transformed data on predetermined sub-carriers, and a cyclic prefix inserter for inserting a cyclic prefix code for the output of the IFFT processor.
- KSP 제안 키워드
- Cyclic prefix(CP), FFT processor, OFDMA scheme, Pilot signal, Prefix code, Single carrier Frequency Division Multiple Access(SCFDMA), Sub-carrier, frequency domain(FD)