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991.
该文从优化计算方法的角度,利用贪心算法对最优解进行分级处理,算法复杂度小等特点,将贪心算法应用于CDMA通信的多用户检测,并结合CDMA通信的实际特点,提出一种基于贪心算法的CDMA多用户检测方法,仿真实验的结果表明,该方法运算复杂度低,可获得接近最优检测的性能。 相似文献
992.
基于RS-485网络的远洋船舶电站监控系统的接口设计 总被引:3,自引:0,他引:3
介绍了一种在Windows平台厂PC机与多台单片机利用RS—485和RS—232C串口实现实时通信的方法,并对该系统的软硬件详细介绍。 相似文献
993.
994.
PC机和多台单片机之间串行通讯在监控系统中的应用是非常广泛的.基于一个医疗监控系统实例,讨论了如何利用PC机和多台单片机的串行通讯实现实时监控.结合MCS-96系列单片机的通讯方式2、3,灵活运用通讯帧中的第九位数据位,即奇偶校验位,即可实现PC机和多台单片机的高效、准确的串行通讯.该监控系统PC机部分的程序是应用VB语言编写的,其中应用到串行通讯控件MSComm,介绍了MSComm控件的属性、方法、事件,并给出了PC机、单片机串行通讯部分的流程图和源代码.整个系统经过测试,已投入使用,效果良好. 相似文献
995.
车载GPS接收机与PC机的串口通讯及数据截取 总被引:7,自引:0,他引:7
文章苗述了车载定位导航系统中GPS(Global Positioning System,GPS)接收机的通讯协议及与PC机通讯的硬件电路,利用VC的通讯控件实现了二者之间的串行通讯,并根据需要对接收到的信息进行分离提取。 相似文献
996.
Nicolas Maudet 《Autonomous Agents and Multi-Agent Systems》2003,7(3):229-233
Recently in the field of agent communication, many authors have adopted the view of interaction as a joint activity regulated by means of dialogue games. It is argued in particular that this approach should increase the flexibility of dialogues by allowing a variety of game compositions. In this research note, we present a framework suited to this feature. A preliminary attempt to capture the negotiation phase (which allows agents to agree upon the dialogue game currently regulating their conversation) is discussed. 相似文献
997.
In this paper, a fault-tolerant broadcast scheme in 2-D meshes with randomly generated faults is provided. This approach is based on an early work on time-step optimal broadcasting in square-shape fault-free 2-D meshes with optimal total communication distance (TCD). An extension to any rectangular-shape fault-free 2-D meshes is first given. The fault block model is used in which all faulty nodes in the system are contained in a set of disjoint blocks. The boundary lines of blocks divide the whole mesh into a set of fault-free polygons and a sequence of rectangular fault-free regions is derived from these polygons. The broadcast process is carried out at two levels: inter-region and intra-region. In the inter-region-level broadcast, the broadcast message is sent from a given source to a special node (called eye [1]) in each rectangular fault-free region. In the intra-region-level broadcast, the extended optimal fault-free broadcast is applied. Some analytical results are given including an upper bound of TCD. 相似文献
998.
A multi-user 3-D virtual environment allows remote participants to have a transparent communication as if they are communicating face-to-face. The sense of presence in such an environment can be established by representing each participant with a vivid human-like character called an avatar. We review several immersive technologies, including directional sound, eye gaze, hand gestures, lip synchronization and facial expressions, that facilitates multimodal interaction among participants in the virtual environment using speech processing and animation techniques. Interactive collaboration can be further encouraged with the ability to share and manipulate 3-D objects in the virtual environment. A shared whiteboard makes it easy for participants in the virtual environment to convey their ideas graphically. We survey various kinds of capture devices used for providing the input for the shared whiteboard. Efficient storage of the whiteboard session and precise archival at a later time bring up interesting research topics in information retrieval. 相似文献
999.
In IEEE 802.12 network, a repeater arbitrates among transmission requests on a round robin basis. A node can transmit a packet only when it is granted by the repeater. Recently, the IEEE 802.12 Committee approved a burst mode in which a node can transmit multiple packets per grant. In burst mode a bandwidth, or the number of packets per grant should be allocated taking into account the timing constraints of real-time messages. This paper proposes bandwidth allocation algorithms based on the burst mode to guarantee the deadlines of periodic real-time messages. Once the bandwidth of each node is derived from the lengths and deadlines of periodic messages, a node is allowed to transmit packets up to the allocated bandwidth per grant. Experimental results show that the proposed algorithms providemuch higher guarantee ratio and graceful degradation for heavy network load, compared with the existing approaches. 相似文献
1000.