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摘要:基于通信技术的列车运行控制系统(CBTC)是铁路信号的发展方向，交频分复用
OFDM)是一种无线环境下的高速传输技术，它对高速列车控制信息传输中卞要受到的由于多
径传播引起的快衰落所产生的影响有很强的抵抗能力.本文首先介绍了OFDM技术的发展和
基本原理，然后在计算机上用M atlal〕对其性能进行了仿真，仿真中将OFDM与传统的单载波
调制方式—i1，交振幅调制( 1frQAM)对抗多径十扰的性能进行了比较，最后分析了一者的仿真结果.
-Abstract: Based
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Cycle Slip Detection, A new method for correcting carrier phase cycle slips
in single-frequency GPS signal is presented. Peking University
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关于单载波频域均衡的研究，将LMS算法引入SC_FDE系统当中-Equilibrium studies on single-carrier frequency domain, the LMS algorithm is introduced which SC_FDE system
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Phase Locked Loops (PLL)
Introduction to PLL
The concept of Phase Locked Loops (PLL) first emerged in the early 1930’s.But the technology was not developed as it now, the cost factor for developing this technology was very high. Since the adva
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runSim -Single Carrier Frequency
Division Multiple Access
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