| 摘要: |
| 为分析离散傅里叶变换(DFT)与离散正弦变换(DST)对单载波频分多址(SC-FDMA)系统某些性
能的影响，提出了一种基于离散正弦变换的单载波频分多址系统。给出了基于DST的SC
-FDMA系统的结构框图，接着重点推导和分析了DST IFDMA和DST LFDMA信号的时域表达式，
最后讨论了系统的峰值平均功率比(PAPR)和不同脉冲成形滤波器的冲激响应。仿真结果表明
，基于DST的SC-FDMA系统比传统的基于DFT 的SC-FDMA系统和正交频分多址接入(OFDMA)系
统有更好的比特误码率。此外，DST SC-FDMA信号的PAPR性能接近于DFT SC-FDMA且优于OF
DMA。 |
| 关键词: 离散正弦变换 单载波频分多址 正交频分多址 峰值平均功率比 |
| DOI： |
|
| 基金项目:国家自然科学基金资助项目(61071195)；中芬国际合作项目(1028) |
|
| A single carrier frequency division multiplex access system based on discret sine transform and its performance analysis |
| ZHOU Yu,ZHUANG Ling,SHAO Kai,WANG Guang-yu |
| () |
| Abstract: |
| To analyze the influence of Discrete Fourier Transform(DFT) and Discrete Sine Tr
ansform(DST) on the performance of a Single Carrier Frequency Division Multiple
Access(SC-FDMA) system,a DST-based SC-FDMA system is introduced. The structur
e of SC-FDMA system based on DST is described. Then, the time domain expression
s of the DST IFDMA signal and DST LFDMA signal are derived and analyzed. Finally
, the Peak-to-Average Power Ratio(PAPR) and impulse res
ponse of different pulse shaping filter are discussed. The simulation results s
how that the proposed DST SC-FDMA system has a better bit performance than the
conventional DFT SC-FDMA and Orthogonal Frequency Division Multiple Access(OFD
MA) system. Furthermore, the PAPR of DST SC-FDMA signals is closed to that of
DFT SC-FDMA signals and lower than that of OFDMA. |
| Key words: discrete sine transform(DST) single carrier frequency division multiple access(
SC-FDMA) orthogonal frequency division multiple access(OFDMA) peak-to-avera
ge power ratio(PAPR) |
