An Improved CDL Model for 5G Millimeter Wave Communication in a Substation Scenario

Clustered delay line (CDL) model is a link-level evaluation model with the characteristics of low complexity and relatively low accuracy. In this paper, a modeling method is proposed to improve the accuracy and applicability of existing CDL models in Third Generation Partnership Project (3GPP). To validate the proposed model, 28 GHz millimeter wave channel measurement was conducted in an outdoor substation scenarios, and the improved CDL model is established by identifying different clusters. The accuracy and applicability of the improved CDL model are validated by validating large scale channel parameters and power delay profile. The provided results show that the improved CDL model can match the actual scenario well. This work offers an accurate and relatively simple channel modeling method for specific scenario, which can be used in link-level simulation and subsequent construction of the power Internet of things.