Results and analysis for a novel 2×2 channel measurement applied in LTE-R at 2.6 GHz

Abstract

To obtain more accurate features of the time-varying wireless channel in the viaduct districts along Harbin-Dalian passenger dedicated railway line, a newly proposed 2 × 2 measurement, in which m-sequence optimum pairs are modulated and transmitted, is performed at 2.6 GHz with a bandwidth of 20 MHz. In this paper, the counted statistical correlation coefficients provide sufficient proof that the lower the relevance between subchannels is, the larger users the channel can accommodate. In addition, the derived path loss model is presented and the shadow fading is fitted to lognormal distribution. Small-scale parameters such as the delay spread, the number of the resolvable multipath and K-factor are also calculated. Fading properties are speculated under viaduct scenarios in high speed railway with the extensive analytical results. This paper promotes evaluation, simulation and design of the wireless communication system based on LTE-R applicable to viaduct scenes in high speed railway.