摘要
介绍了下行链路中基于循环前缀的单载波直接序列扩频技术(CP/CDMA)。这种技术结合了多载波系统中的循环前缀和频域均衡,具有较低的复杂度。同时保留了单载波系统发射端复杂度低的优点。在时变信道中,利用基于辅助数据的信道估计方法,即每隔一定帧数的数据帧发送一帧训练序列来估计信道。在仿真中使用了信道编码。
This paper introduces the down link single carrier DS/CDMA based on cyclic prefix. This technology combines the cyclic prefix and frequency domain equalization in multicarrier system, it has low system complexity. Meanwhile, this system maintains low complexity of the transmitter of single carrier system. In time - variant channel, we send the training sequence at several intervals to estimate the channel response and adopt the channel coding.
出处
《现代电子技术》
2006年第11期24-26,31,共4页
Modern Electronics Technique
