单载波频域均衡技术用于增强地铁无线通信质量的研究

由于地铁隧道环境的特殊性，存在密集的反射和散射路径，而且列车的运动带来了信号的频移：通过实测数据，分析了地铁信道中的无线电波损耗，小尺度多径传播以及地铁隧道宽带信道统计模型，提出将频域均衡技术应用于地铁信道中，通过循环前缀的运用，频域均衡技术能够有效地抵抗多径带来的码间干扰，而且单载波技术对于多普勒频移敏感程度低于正交频分复用系统，仿真结果表明单载波频域均衡技术能够显著地提升地铁无线通信系统的性能。

Single-Carrier Frequency Domain Equalization Technology to Enhance Quality of Metro Wireless Communication

Metro space has intensive reflection and scattering paths, furthermore due to the high-speed movement of trains it brings signal frequency shift. Through the measured data~ loss of radio waves in metro wireless channel, small scale multipath propagation as well as the statistical model of the metro tunnel broadband channel is analyzed. The paper proposes frequency domain equalization techniques applied to metro wireless channels, with frequency domain equalization technology through the use of cyclic prefix code it can effectively have resistance to multipath which brings intersymbol interference, and single carrier technology for the Doppler frequency shift of the degree of sensitivity is less than the OFDM system. The simulation results show that a single carrier frequency domain equalization technology can significantly enhance metro wireless commtlnication performance of the system.