%0 Journal Article
%T Steepest Descent Method Based Transmission Power Control in Vehicular Networks<br>基于最速下降法的车载网络功率控制研究
%A Zhang Yu Xu Wei-qiang Chen Ji-ming Sun You-xian
%A <br>张宇
%A 徐伟强
%A 陈积明
%A 孙优贤
%J 电子与信息学报
%D 2010
%I 
%X The transmission power control algorithm D-FPAV(Distributed Fair Power Adjustment for Vehicular environments) becomes computational expensive when required calculation precision is high, i.e., the step λ is small. In this paper, a novel transmission power control algorithm SDPC(Steepest Descent Power Control) algorithm is proposed to improve D-FPAV. This algorithm is based on the rapid convergence theory of the steepest descent method. Simulation results show that the effectiveness of SDPC in terms of the number of iterations for computing the transmission power values decreases and converging speed. As a result, the transmission power to transmit their status information can be quickly adaptive to the vehicle dynamic and surroundings situations. Therefore, channel congestion can be effectively controlled and the security of vehicular networks can also be improved.
%K Vehicular network
%K Transmission power control
%K Congestion control
%K SDPC (Steepest Decent Power Control) algorithm
%K Convergence speed<br>车载网络
%K 功率控制
%K 拥塞控制
%K SDPC算法
%K 收敛速度
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=1319827C0C74AAE8D654BEA21B7F54D3&jid=EFC0377B03BD8D0EF4BBB548AC5F739A&aid=6C072E6C30D2C3552C638128B484C479&yid=140ECF96957D60B2&vid=9971A5E270697F23&iid=F3090AE9B60B7ED1&sid=D3BE2D10C95334C0&eid=2B3D90A54BCBF9B2&journal_id=1009-5896&journal_name=电子与信息学报&referenced_num=0&reference_num=12