unb

After advancing an improved method and using it into the UNB communication theory again , we find the right result .

提出了改进的办法，并将其运用于超窄带通信理论，得到了正确的结果。

Then it analyzes the characteristics of UNB filter , and discusses the feasibility of applying classical filter to UNB transmission system from the perspective of information recovery .

接着，分析了超窄带滤波器的特点，从信息恢复角度出发探讨了将经典滤波器应用于超窄带通信系统的可行性。

A UNB Wireless Transceiver Design and Implement Based on DSP

基于DSP的超窄带无线收发信机的设计与实现

UNB has a very reputation engineering program .

UNB的土木工程学很有名。

A design and implementation of UNB wireless transceiver based on digital signal processor ( DSP ) is described in the paper .

本文提出了一种基于DSP的超窄带无线收发信机设计方案。

Some of tests results carried out in a variety of situations at Kwangyang Port and UNB are presented .

一些试验结果进行了在各种情况下的光阳港和UNB介绍。

Ultra-Narrow-Band ( UNB ) technology can greatly improve the spectrum utilization efficiency , and ease the tension of frequency resources . Therefore it has attracted extensive attention .

超窄带（UNB）高效调制技术可获得非常高的频谱利用率，能有效缓解频率资源的紧缺现状，因而近年来广受关注。

The program can reduce the side-band power effectively , and meet more stringent bandwidth restrictions . The filtered UNB signal maintains the differences of information .

该方案可有效降低边带辐射功率，从而使发射信号带宽符合超窄带的苛刻定义，且滤波后的超窄带信号仍然保留信息差异性。

UNB ( Ultra Narrow Band ) communication is such a technique that is able to provide extremely high frequency bandwidth efficiency up to 100bps / Hz .

超窄带（UNB，UltraNarrowBand）通信正是一种可以提供极高频谱利用率的技术，有望达到100bps／Hz。

For the all-to-all DCA-MLBS problem under unit-size message model and unbounded-size message model , this thesis presents two approximation algorithms called UTB and UNB respectively .

针对单位大小和无限大小两种报文模型下的全队全广播调度问题，本文分别提出了两种近似算法UTB和UNB。

This paper analysis the requirements of the UNB filter according to the theory of the UNB modulation . It points out that traditional FIR or IIR structures are impossible to realize UNB filtering .

根据超窄带调制的原理详细分析了超窄带滤波器的要求，并使用传统的数字滤波器设计进行了仿真，仿真结果得出传统的FIR或IIR结构是不可能完成超窄带滤波的。

In recent years , the bandwidth efficiency of Ultra Narrow Bandwidth ( UNB ) technologies , represented by Very Minimum Shift Keying ( VMSK ), has reached near a 100 bps / Hz .

近年来，以甚小移键控调制（VMSK：VeryMinimumShiftKeying）为代表的超窄带（UNB：UltraNarrowBandwidth）技术的带宽效率已达100bps/Hz。