2010 Fiscal Year Final Research Report

High efficiency system design based on integration of physical layer and MAC layer for inter-vehicle communication system

Research Project

Project/Area Number	20560353
Research Category	Grant-in-Aid for Scientific Research (C)
Allocation Type	Single-year Grants
Section	一般
Research Field	Communication/Network engineering
Research Institution	Nagoya University
Principal Investigator	YAMAZATO Takaya Nagoya University, 教養教育院, 教授 (20252265)
Project Period (FY)	2008 – 2010
Keywords	車車間通信 / クロスレイヤデザイン / CDMA ALOHA / トークン
Research Abstract	This paper aims to improve the performance of vehicle-to-vehicle communication system by cross-layer design of MAC layer and physical layer. In particular, I extend the former studies of the following. Periodical token based protocols to improve the throughput at the situation where a vehicle may have difficulty to recognize the situation around his vehicle. CDMA packet based communication system is essential in vehicle-to-vehicle communication As results, I found the following through this study. CDMA ALOHA is much preferable than OFDM with CSMA. Turbo equalizer is effective to reduce interference appeared in vehicle-to-vehicle communication. BFDM/OQAM, that can employ Gaussian pulse, shows satisfactory performance that OFDM in highly mobile environment. So far, I have published the results obtained by this study to conferences and journal papers.