Single Frequency Network System Coverage and Trial Testing of High Speed Railway Television System

The design of High Speed Railway Television (HSRT) system is presented in this paper. The system mainly includes two aspects, the coverage network and the modulation/demodulation technique. We suggest the deployment of HSRT single frequency network (SFN) taking GSM-R as reference and Advanced Digital Television Broadcasting-Terrestrial (ADTB-T) as demodulation technique (it is why HSRT is also called ADTB-R). Moreover, to ensure the reliable work of ADTB-T under the special environment of HSRT-SFN, directional coverage diversity receiving technique are proposed to simplify the equivalent channel model. The validity of this scheme is verified by theoretical analysis and also laboratory tests. The experimental network including the trial testing environment and equipment which constitute the network infrastructure of HSRT-SFN are described. 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 HSRT-SFN is well suited for the special application of high speed railway television.