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Signal
- 分析了在超宽带通信系统中的扩频干扰，并用两种通用的调制技术实现了对提出的抗干扰方法的仿真-he ultra wideband (UWB) interference to direct sequence spread spectrum (DSSS) receiver is analyzed. Two popular UWB modulation schemes, the time hopping pulse position modulat
Luminescence-properties-Eu-Tb-ions-
- Eu/Tb codoped aluminoborosilicate glasses were fabricated by high temperature melting-quenched technique and their luminescence properties were investigated by excitation and emission spectra. Under 376 nm excitation, blue, green and red emission
rare-earth-metals-introduce
- 钪(Sc)、钇(Y)和镧系金属中镧(La)、铈(Ce)、镨(Pr)、钕(Nd)、钜(Pm)、钐(Sm)、铕(Eu)、钆(Gd)、铽(Tb)、镝(Dy)、钬(Ho)、铒(Er)、铥(Tm)、镱(Yb)、镥(Lu)17个金属的统称。-Scandium (Sc), yttrium (Y), and lanthanide metals Lanthanum (La), cerium (Ce), praseodymium (Pr), neodymium (Nd), DR (Pm), samarium (Sm
Translated_NRZ_DP_QPSK_112G_(11Abr2011_8AM)
- Resumo - Neste trabalho é apresentada uma transmissã o óptica experimental de 3,58 TB/s utilizando 32 canais modulados a 112 Gb/s com o uso do formato de modulaç ã o NRZ-DP-QPSK e detecç ã o coerente. Os efeitos da filtragem óptic
TB-10013-2004
- 铁路工程物理勘探规程 2004 包括总则、术语以及规定-disciplines of engineering geophysical prospecting methods 2004