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http://dx.doi.org/10.6109/jicce.2010.8.3.289

Implementation of Timing Synchronization in Vehicle Communication System  

Lee, Sang-Yub (SoC platform R&D center, Korea Electronics Technology Institute)
Lee, Chul-Dong (Jeonbuk embedded system research center)
Kwak, Jae-Min (Division of Marine Electronics & Communication Engineering, Mokpo National Maritime University)
Abstract
In the vehicle communication system, transferred information is needed to be detected as possible as fast in order to inform car status located in front and rear side. Through the moving vehicle information, we can avoid the crash caused by sudden break of front one or acquire to real time traffic data to check the detour road. To be connecting the wireless communication between the vehicles, fast timing synchronization can be a key factor. Finding out the sync point fast is able to have more marginal time to compensate the distorted signals caused by channel variance. Thus, we introduce the combination method which helps find out the start of frame quickly. It is executed by auto-correlation and cross-correlation simultaneously using only short preambles. With taking the absolute value at the implemented synch block output, the proposed method shows much better system performance to us.
Keywords
Timing Synchronization; Vehicle Communication System; Carrier Frequency Offset (CFO) Estimation; Symbol Timing Offset (STO) Estimation; Wireless Local Area Network (WLAN); IEEE802.11p;
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