1 IntroductionTime-division synchronous code-division multiple access （TD-SCI）MA） is a 3G wireless communica- tion standard developed in China and adopted by ITU. It has high spectrum efficiency; it providesgood sy...1 IntroductionTime-division synchronous code-division multiple access （TD-SCI）MA） is a 3G wireless communica- tion standard developed in China and adopted by ITU. It has high spectrum efficiency; it providesgood system slability; and it lowers network construction costs. After many years of development, it is now at the stage of large-scale application.展开更多
针对5G通信无线多媒体传输时域同步—正交频分复用(TDS-OFDM)系统中的符号定时恢复处理慢、性能距离理论界较大等问题,提出了一种并行MAP定时恢复算法。它通过拉格朗日插值,能较好地提取最佳采样点幅度与极性变化信息,检测定时误差。而...针对5G通信无线多媒体传输时域同步—正交频分复用(TDS-OFDM)系统中的符号定时恢复处理慢、性能距离理论界较大等问题,提出了一种并行MAP定时恢复算法。它通过拉格朗日插值,能较好地提取最佳采样点幅度与极性变化信息,检测定时误差。而且该算法采用了高效并行的最大后验概率(MAP)准则,高速完成定时误差估计。仿真表明,与现有MM算法、Gardner算法等相比,该算法估计精度较高,结果逼近MAP定时恢复算法,差距约2 d B。展开更多
文摘1 IntroductionTime-division synchronous code-division multiple access （TD-SCI）MA） is a 3G wireless communica- tion standard developed in China and adopted by ITU. It has high spectrum efficiency; it providesgood system slability; and it lowers network construction costs. After many years of development, it is now at the stage of large-scale application.
文摘针对5G通信无线多媒体传输时域同步—正交频分复用(TDS-OFDM)系统中的符号定时恢复处理慢、性能距离理论界较大等问题,提出了一种并行MAP定时恢复算法。它通过拉格朗日插值,能较好地提取最佳采样点幅度与极性变化信息,检测定时误差。而且该算法采用了高效并行的最大后验概率(MAP)准则,高速完成定时误差估计。仿真表明,与现有MM算法、Gardner算法等相比,该算法估计精度较高,结果逼近MAP定时恢复算法,差距约2 d B。
