premodulation meaning in English
预调制
Examples
- To increase the bandwidth efficiency , such a system scheme use the msk modulation method combining with a premodulation filter
文中讨论了以msk调制技术结合预调滤波器提高带宽效率的系统构建方案。 - Considering the bandwidth efficiency , the error rate performance and the complexity for realization together , we construct a digital transmission system with single - carrier modulation technique using the optimum premodulation filter . then the system parameters and performance indexes are prensent
综合考虑带宽效率、误码性能和实现复杂程度以后，构建出基于单载波调制技术的无线数字传输系统，并给出系统参数和性能指标。 - A virtual cathode oscillator with an axially extracted te10 or te11 mode has been investigated using the pic code . it can emit microwaves axially through an antenna without mode converter or transition waveguide , making the system more simple and compact . the efficiency of this device can be enhanced by employing premodulation cavity , resonant cavity , feedback mechanism , and virtual cathode formed by two electron beams
本文利用物理分析和粒子模拟的方法研究了轴向提取te10 / te11模虚阴极振荡器,结果表明通过引入预调制腔、谐振腔、反馈端面、双电子束阴极等结构,可以实现结构相对紧凑、束波转换效率较高的轴向提取虚阴极振荡器。 - As we have introduced a multilevel decision method with discriminator detection to improve the error rate performance , the deducing and analyzing for this method are present in this article . the theoretical error rate and the monte carlo simulation result are showed in figure to compare the system error rate performance affected by different premodulation filter
在系统误码仿真中引入了一种有助于改善误码性能的鉴频加多电平判决的解调方法，文中对此方法也进行了详细的推导和分析，并给出根据此方法计算出的误码理论值，结合系统误码性能的蒙特卡罗仿真值，对比分析各种预调滤波器对系统误码性能的影响。