Design of Antenna Configuration for Interference Control in MmWave V2V Communication Systems

摘要

Millimeter wave (mmWave) has great potential to be used for Vehicle-to-Vehicle (V2V) communications due to the characteristics of ultra-high throughput and ultra-low latency. Besides, one mmWave channel can be reused in all V2V links since it is easily blocked by surrounding obstacles, which highly improves the spectrum efficiency. However, links with reflected interference still exist that degrade the throughput of mmWave V2V communications, even though the direct interference link can not penetrate vehicle bodies. To mitigate this negative effect, in this paper, we firstly analyze the channel model of mmWave V2V under interference from ground and surrounding reflections. In order to maintain a higher practical throughput than the required data rate (1 Gbps), a new method of ZigZag antenna configuration is proposed. Secondly, via simulation, the antenna height is optimized under ZigZag antenna configuration. At the optimal antenna height, throughputs of mmWave V2V communications with/without ZigZag antenna configuration are fully compared with non-equal inter-vehicle distance at 60 GHz, where the ZigZag antenna configuration significantly suppresses the destructive interference. Finally, the effectiveness of ZigZag antenna configuration is proved by outdoor experiments.