Due to the growing demand of the autonomous and connected vehicles, the number of embedded systems and the connectivity increase. Therefore, the data traffic of recent in-vehicle networks is dramatically increasing. In order to improve the data rate and provide reliable and inexpensive quality of service (QoS) of the in-vehicle networks, enormous researches have focused on developing the in-vehicle communication systems recently. However, the data rate of commercial in-vehicle networks such as controller are network (CAN), local interconnect network (LIN), FlexRay and media oriented systems transport (MOST) is insufficient to support the increasing data traffic. In this regard, in order to support the high speed data processing while maintaining backward compatibility with controller area network (CAN) for in-vehicle communication system, the controller area network for high data rate (CAN-HD) was proposed by combining the standard baseband CAN signal with a passband modulated signal. In this paper, we demonstrate both the improvement in performance and the validity of the backward compatibility of CAN-HD system. To be specific, we provide the noise characteristic measured in the real vehicle environment and proper criteria for determining the power constraint of the passband signal to achieve highly compatible system by analyzing the channel capacity of CAN-HD as well as the bit error rate (BER) of standard CAN receiver. ⓒ 2017 DGIST
Table Of Contents
I. Introduction 1-- II. In-vehicle Networks 4-- 2.1 Controller Area Network (CAN) 4-- 2.2 Local Interconnect Network (LIN) 8-- 2.3 FlexRay 9-- 2.4 Media Oriented Systems Transport (MOST) 10-- 2.5 Controller Area Network with Flexible Data Rate (CAN-FD) 11-- III. Controller Area Network for High Data Rate (CAN-HD) 13-- 3.1 Introduction of CAN-HD 13-- 3.2 Channel Gain of CAN Bus 18-- 3.2.1 Channel Modeling Method 18-- 3.3 Noise Measurement of CAN Bus 23-- IV. Performance Analysis for CAN-HD 25-- 4.1 Channel Capacity of CAN-HD 25-- 4.1.1 Channel Capacity in Frequency Selective CAN Channel 25-- 4.1.2 Channel Capacity Analysis 25-- 4.2 Backward Compatibility Analysis for CAN-HD 30-- 4.2.1 Signal Transmission and Detection 30-- 4.2.2 BER Analysis 32-- 4.2.3 Simulation Result 34-- V. Conclusion 39-- Reference 40--
