Research of propagation characteristics of break point: near zone and far zone under operational subway condition

Authors:
Ke Guan;Zhangdui Zhong;Bo Ai;Cesar Briso-Rodríguez
Affiliations:
Beijing Jiaotong University, Beijing, P.R. China;Beijing Jiaotong University, Beijing, P.R. China;Beijing Jiaotong University, Beijing, P.R. China;Universidad Politécnica de Madrid, Madrid, Spain
Venue:
Proceedings of the 6th International Wireless Communications and Mobile Computing Conference
Year:
2010

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Abstract

This paper focuses on three vital aspects in propagation characteristics inside tunnels: break point; near zone and far zone in a practical environment. Firstly, all the distinguishing features of radio channel in the areas before and after break point at different angles such as modal theory, ray-tracing theory, statistics and propagation model have been summarized. By collectively analyzing the research perspectives above, a panoramic view on the propagation characteristics of break point; far zone and near zone has been proposed. Based on a measurement carried out in Madrid operational subway environment at 2.4 GHz, some new radio channel characters of the break point; the regions before and after break point at higher frequency have been discussed and analyzed.