DFT spread OFDM 시스템을 위한 유연한 레퍼런스 신호 구조
정병장, 서방원, 안재영
- 8891662 (2014.11.18)
- Provided is a data transmission apparatus to transmit a reference orthogonal frequency division multiplexing (OFDM) symbol generated by frequency division multiplexing a reference symbol and a data symbol, and a data reception apparatus to estimate a channel using the reference OFDM symbol. Since the reference symbol and the data symbol are frequency division multiplexed, a Peak to Average Power Ratio (PAPR) may not increase greatly, and the transmission apparatus may transmit the reference OFDM symbol to the data reception apparatus more frequently. Accordingly, the data reception apparatus may estimate a channel accurately.
- KSP 제안 키워드
- Average Power, Data transmission, Frequency division, Frequency division multiplexing, OFDM systems, Orthogonal frequency division Multiplexing(OFDM), Peak-to-Average-Power-Ratio(PAPR), Reference symbol, Spread OFDM, division multiplexing, power ratio