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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.
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收录了通信系统单载波各种调制如调频调相等的matlab源代码-Communication system includes a variety of single-carrier modulation such as FM equivalent transfer matlab source code
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A signal is transmitted using a carrier frequency of 900 MHz. It is
transmitted through a multipath channel which can be modelled as Rayleigh
fading. Assumingthe Dopper spread as 10Hz and the number of multipaths as
10, generate the Rayleigh
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通信系统的信道模型，通过此单载波QPSK系统是采用一个正弦形振荡作为载波-Communication system channel model, adopted by the single-carrier QPSK system is used as a carrier and a sinusoidal oscillation
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传统均衡器无法有效地同时对抗这两种信道衰落，而Turbo均衡技术作为一种联合信道均衡和信道译码的方法，能有效地对抗符号间干扰（ISI），提供迭代增益，提高接收机的整体性能。因此，本文根据下一代无线通信系统的设计要求，分别对单载波和OFDM系统的Turbo均衡算法进行了研究。
-Conventional equalizer can not effectively fight both at the same time fading, while the Turbo equalization a
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Simulink是MATLAB最重要的组件之一，它提供一个动态系统建模、仿真和综合分析的集成环境。在该环境中，无需大量书写程序，而只需要通过简单直观的鼠标操作，就可构造出复杂的系统。Simulink具有适应面广、结构和流程清晰及仿真精细、贴近实际、效率高、灵活等优点，并基于以上优点Simulink已被广泛应用于控制理论和数字信号处理的复杂仿真和设计。同时有大量的第三方软件和硬件可应用于或被要求应用于Simulink。-Abstract: In the development of communi
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In a single carrier communication system, the symbol period must be much greater than the delay time in order to avoid inter-symbol interference (ISI) [1].-In a single carrier communication system, the symbol period must be much greater than the dela
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该文件给出了单载波频域均衡中MMSE均衡方法的MATLAB实现，其中包含调制解调，交织，解交织以及编译码，包含了整个通信系统的各部分，希望对大家有帮助。-The document gives the MATLAB single-carrier frequency domain equalization MMSE equalization method, which contains modulation and demodulation, interleaving, de-interleavin
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到达过程是的泊松过程，光纤无线通信系统中传输性能的研究，包括单边带、双边带、载波抑制及四倍频。- Arrival process is a Poisson process, Fiber Transmission wireless communication system performance, Including single sideband, double sideband, suppressed carrier and quadruple.
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包括单边带、双边带、载波抑制及四倍频,保证准确无误，是学习通信的好帮手，光纤无线通信系统中传输性能的研究。- Including single sideband, double sideband, suppressed carrier and quadruple, Ensure accurate communication is learning a good helper, Fiber Transmission wireless communication system performance
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保证准确无误，是学习通信的好帮手，对HARQ系统的吞吐量分析，包括单边带、双边带、载波抑制及四倍频。- Ensure accurate communication is learning a good helper, HARQ throughput analysis of the system, Including single sideband, double sideband, suppressed carrier and quadruple.
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In a single carrier communication system, the symbol period must be much
greater than the delay time in order to avoid inter-symbol interference (ISI) [1].
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