LTE for Railway (LTE-R) is a promising railway mobile communication system to provide new communication-based applications for smart railways, but it is plagued by inter-cell co-channel interference. In order to quantity the impact of inter-cell interference, it is necessary to obtain the downlink Signal to Interference plus Noise Ratio (SINR) distribution for system performance evaluation. The single-carrier SINR is analyzed based on LogNormal (LN) and Log SKew Normal (LSKN) approximations. Further, using Exponentially Effective SINR Mapping (EESM) method, the single-carrier SINR analysis results are extended to the multicarrier LTE-R system. A closed-form expression for the effective SINR is derived by approximating it as a LN distribution. Based on the above analysis results, the impacts of overlapping depth between neighboring cells on the outage probability and capacity are investigated. Our theoretical analysis is verified with high accuracy by Monte Carlo simulation. The simulation results show that the overlapping depth has a weak effect on the performance of center users, but deeply overlapped coverage leads to a serious deterioration in outage performance of edge users.


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    Title :

    Downlink Interference Analysis of LTE-R System with Overlapped Linear Coverage


    Contributors:
    Zhang, Xu (author) / Zhu, Gang (author) / Lin, Siyu (author) / Song, Jiaying (author)


    Publication date :

    2020-09-20


    Size :

    820520 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English




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