铁路电视单频网系统测试和性能分析

摘要

介绍了中国铁路电视单频网系统的测试结果和性能分析,描述了系统测试环境和基础网络设备组成.由于这个系统设计基于简化信道模型的思想,因此之后先从理论上分析了信道简化模型所带来的优势.然后,现场测试结果验证了基于定向天线覆盖和分集接收机的网络设计的有效性.测试结果与理论分析相一致,证明了该系统很适合于中国铁路电视这一特殊应用.%In this paper, the trial test results and performance analysis of Chinese railway television single frequency network system are presented. The trial test environment and equipment which constitute the network infrastructre are described. The design is based on the idea of simplifying the channel model. Therefore, the benefits brought by the simplified channel model are theoretically analyzed. Finally, the trial test results are presented to verify the validity of the network design which based on the directional coverage and diversity receiver. The test results accord with the theoretical analysis and prove that the system is well suited for the special application of Chinese railway television.