Scenario-Specific Millimeter-Wave Cluster Modeling for Intra-Vehicle Access Links

This paper investigates millimeter-wave cluster characteristics for intra-vehicle access links in a passenger vehicle cabin. Double-directional measurements at 61.5 GHz were conducted for two selected receiver locations near the door switches. High-resolution multipath components were extracted from the measured channel transfer functions and subsequently grouped into clusters. Based on the identified clusters, the intra-cluster delay and angular characteristics were characterized and parameterized for the measured scenarios. The results indicate that the dominant clusters are primarily formed by single reflections with relatively small excess delays, while higher-order reflections contribute only weak power. The resulting scenario-specific cluster parameters provide a physically interpretable basis for evaluating future high-data-rate intra-vehicle wireless links.