@techreport{oai:ipsj.ixsq.nii.ac.jp:00043658,
 author = {土橋, 健太郎 and 田代, 裕和 and 富永, 英義 and Kentaro, Dobashi and Hirokazu, Tashiro and Hideyoshi, Tominaga},
 issue = {90(2005-MBL-034)},
 month = {Sep},
 note = {This paper proposes a scheme that avoids PN code collision in simultaneous communication system for safety driving. When spectrum distributions are utilized in inter-vehicle communication  vehicles choose suitable PN codes by recognizing the neighboring PN codes already in use. However  due to the movements of vehicles  vehicles will come across unexpected vehicles passing through or oncoming. That causes PN code collision. To cope with the problem  the proposed scheme divides the carrier frequency according to the direction of vehicle movement. In this scheme  since the oncoming vehicles are assigned with different frequency  PN code collision can be avoided. Simulation result shows that the proposed scheme reduces the rate of PN code collision., This paper proposes a scheme that avoids PN code collision in simultaneous communication system for safety driving. When spectrum distributions are utilized in inter-vehicle communication, vehicles choose suitable PN codes by recognizing the neighboring PN codes already in use. However, due to the movements of vehicles, vehicles will come across unexpected vehicles passing through or oncoming. That causes PN code collision. To cope with the problem, the proposed scheme divides the carrier frequency according to the direction of vehicle movement. In this scheme, since the oncoming vehicles are assigned with different frequency, PN code collision can be avoided. Simulation result shows that the proposed scheme reduces the rate of PN code collision.},
 title = {車車間通信におけるPN符号衝突回避のための周波数割当に関する方式},
 year = {2005}
}