Access layer network will focus on the development of broadband access . when large demand for the divertion of the narrow band ip dial - up services , it is suggested to adopt the gateway mode ?接入层网络重点发展宽带接入，当窄带ip拨号业务分流需求较大时，可考虑采用网关方式。
The layout and construction of cdma network , either narrow bands called is - 95 system or 2 . 5 generation and the real 3 generation , deserves more attentions in the new century 在新世纪网络规划和建设中，无论是窄带is - 95 、 2 . 5代cdma20001x还是真正的3代， cdma网络都是值得关注的中心。
Based on multirate digital signal processing , this paper development a new method to design the narrow band fir digital filter , which makes the design of narrow band fir digital filters possible 本文另辟它径，采用多抽样率结构来设计窄带fir滤波器，使窄带fir滤波器的设计由不可能变为可能。
Mgcph . 248 mode and sip mode can save lot for the narrow band users access equipment and circuits , however , due to the high cost at the end user , it is hard to predict whether it can be accepted by mass users 248话机和sip话机方式能够节省窄带用户接入设备和线路，但由于终端成本较高，是否能够被大量用户接受很难确定。
When the radar is narrow band , radar target is studies as a point target . target and clutter are modeled as having a zero - mean complex gaussian probability density function ( pdf ) . target is assumed as slowly - fluctuant 窄带条件下,雷达目标可以看作是一个点目标,假设目标和杂波都服从零均值的复高斯分布,目标为慢起伏。
The thermovision 2000s long - wave , narrow band qwip 320 x 240 fpa delivers high thermal sensitivity in both warm and cold climates and makes the system resistant to existing laser Thermovision 2000采用320 x 240像素长波窄波段的焦平面的探测器。在温暖和寒冷的天气下具有很高的热灵敏度，确保系统能够抵抗现有的激光攻击性武器。
The simulation results shown that it is unbiased estimation for the wide band procedure and the narrow band procedure in the burg method and it approaches to the true using less data records in the condition of 1ower snr 伯格法可以从信噪比较低的条件下从噪声中提取正弦信号，并且可以用比较少的数据记录进行估计，估计结果很接近真实值。
Cirrus is usually thin , wispy and scattered . there are patches of narrow bands with fibrous texture which look like feathers , hair , tenuous trail or ponytails . it is fascinating to see cirrus in a variety of shapes and sizes 卷云云层通常不厚，且细致而分散，呈现一丝丝的具有纤维组织的云彩，像羽毛头发乱丝或马尾，姿态很多，相当有趣。
The trend that china ' s multimedia networks is developing to wide band and ip centered can not deny the fact that narrow band environment and operations in it will exist for a long time 中国通信网宽带化和ip化的趋势，带来了多媒体通信业务的不断膨胀。然而，不可否认的是，一段时间内，窄带必将和宽带化的进程并进，窄带业务仍然有着广泛需求。
With the rapid development of software radio techniques , the sampling rate is becoming high . on the condition of high sampling rate , the design of narrow band fir digital filters by usual ways is impossible 随着软件无线电技术的发展，使信号的采样频率越来越高，而在高采样率的条件下，采用常规的方法进行窄带fir滤波器的设计是不可能的。
