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- Under the trend of future integration of WPAN, UWB system is the best solution undoubtedly. 对于未来整合化的无线个人区域网路的趋势之下，超宽频系统无疑的为一个最佳的解决方案。
- Especially, UWB system can assure high antiblocking performance as well as satisfy multi-user capability. 特别是它可以在满足多用户容量的同时保证有较高的抗阻塞性能。
- As PRF increases,the BER performance of this UWB system is much degraded under the conditions of fixed L and pulse shape. 当固定 L 和脉冲波形时,增大 PRF 将大大降低 UWB 系统 BER 性能。
- In this thesis, we design a novel coplanar waveguide-fed log-periodic slot antenna which possesses a very wideband performance and can be used in the UWB system. 在这篇论文中，我们使用共面波导馈入机制设计了一种对数周期开槽天线，它具有非常大的频宽，适合使用于超宽频的系统之中。
- The MAT performances of the proposed scheme are then analyzed and compared with those of the conventional acquisition schemes via a simulation of a pulse-based time-hopping UWB system. 文中还对该算法的平均捕获时间进行了分析，并在基于脉冲体制的跳时超宽带系统仿真中将其与经典算法进行比较。
- Modern UWB systems use various modulation techniques, including Orthogonal Frequency Division Multiplexing, to occupy these extremely wide bandwidths. 为了占据非常宽的带宽，现代的UWB技术使用不同的调制技术，其中包括正交频分多路复用。
- A Radio UWB System for Sensor Network Application 一种适用于无线传感器通信的UWB收发机结构
- Polycycle shape pulse generator for UWB system 超宽带多周期波形脉冲发生器的产生技术
- A model of the distribution of UWB system is made up. Based on the known model of WCDMA system,the relationship between CDMA capacity and the power and the density of UWB transmitters is obtained. 文中首先建立了UWB设备的分布模型,针对已有的WCDMA系统模型,应用计算机仿真,得出CDMA系统中加入UWB设备后的系统容量与UWB设备发射功率、分布密度的关系。
- It is crucial to deal with the interference problem for the further development of UWB systems, such as Multi-User Interference (MUI), Inter- Symbol Interference (ISI) and Narrow-Band Interference (NBI). 解决UWB通信系统中存在的干扰问题，如用户间干扰(MUI)、码间干扰(ISI)、窄带干扰(NBI)，对于超宽带系统的发展来说是至关重要的。
- A model of the distribution of UWB system is made up.Based on the known model of WCDMA system,the relationship between CDMA capacity and the power and the density of UWB transmitters is obtained. 文中首先建立了UWB设备的分布模型,针对已有的WCDMA系统模型,应用计算机仿真,得出CDMA系统中加入UWB设备后的系统容量与UWB设备发射功率、分布密度的关系。
- UWB signals and their power spectrum mask are important factors which need to be considered when studying the spectrum coexisting and compatible problems between UWB systems and other radio systems. 超宽带(UWB)信号及其功率谱分布是研究超宽带通信系统与其它通信系统频谱共存与兼容问题时,需要考虑的重要因素。
- I suppose you also have a caste system in your society. 我想你们的社会里也有一种等级制度。
- The right to dissent is part of our political system. 有持异议的权利是我们政治体制的组成部分。
- Do you know how to log in to the system? 你知道怎么登录进入这个系统吗？
- Public opinion was against the old feudal system. 公众舆论反对旧的封建制度。
- The system works on the principle that heat rises. 该项装置是按照热力上升的原理运转的。
- The drainage system has been aged. 排水系统已经老化了。
- They called for a radical reform of our tax system. 他们要求对税收制度进行根本改革。
- Research of Key Technology in DS-CDMA UWB System DS-CDMA UWB系统关键技术的研究
