bpAnn

coding for direct spread spectrum

说明：  本文正是在研究WIMAX/802.16e协议和FMIPv6协议的基础之 上，提出了基于FMIPv6的WIMAX网络快速切换机制，该方案采用跨 层切换的思想，MAC层联合网络层同时进行切换，在链路尚未断开 之前即完成新转交地址(NCOA)获取等功能，从而加快了切换进程， 减小了切换时延和切换时的丢包率。在提出本切换机制的基础上，本 文在NSZ仿真平台上对所提出的切换方案做了系统性的性能仿真，通 过仿真结果验证了方案的可行性和优越性。 ( In this paper, IEEE802.16e standard is described at first. Then an introduction for the basic knowledge and research in MIPv6 and FMIPv6 protocol is given. A fast handover scheme of WiMAX network which based on FMIPv6 protocol is suggested, which implements the fast handover at IP layer associating with MAC layer at the same time. scheme minimizes handover latency by predicting and preparing This the impending handover in advance. Finally, simulation are carried out to evaluate the performance of this fast handover scheme. The result of the simulation shows that the fast handover scheme has good performance. )

每个天线单元都由独立的移相开关控制，通过控制各天线单元发射的相位，就能合成不同相位波束。相控阵各天线单元发射的电磁波以干涉原理合成一个接近笔直的雷达主瓣，而旁瓣则是各天线单元的不均匀性而造成。(Each antenna unit is controlled by an independent phase shift switch. By controlling the phase transmitted by each antenna element, different phase beams can be synthesized. The electromagnetic wave emitted from each antenna unit of phased array generates a nearly straight radar main lobe based on the interference principle, while the sidelobe is caused by the heterogeneity of the antenna units.)

matlab6.0的学习书籍，对于matlab6.0使用不是很了解的的人，用这个很方便，是一本很不错的入门加精通的书籍。(matlab6.0 learning books, for matlab6.0 use is not very understanding person, with this very convenient, is a very good master entry plus books)

kalman滤波算法应用matlab语言来实现。(kalman filter matlab )

可以改善其时延较长的问题,但以往技术是针对每一跳候选节点的休眠时延进行优化的(Implementation algorithm optimization to achieve the connection of WSN)

说明：  matlab的视频接口程序，可以用来接摄像头(matlab video interface program can be used to access camera)

ofdm仿真系统matlab源程序，子载波调制方式为qam。(ofdm matlab simulation system source code, sub-carrier modulation for qam.)

天线互耦对MIMO无线信道性能的影响 (Antenna mutual coupling on MIMO radio channel performance)

说明：  单相并网逆变器，采用PR控制，能够实现无静差交流电压跟踪(Single phase grid connected, PR control)