digital carrier meaning in Chinese
数字载波
Examples
- Domestic satellite communication earth stations - general technical requirements part 5 : intermediate data rate digital carriers
国内卫星通信地球站总技术要求第五部分:中速数据数字载波通道 - To avoid excessive transmission distortion , the bandwidth between transmitter and receiver must be at least twice that with digital carrier modulation
为避免过量的传输失真,发射机与接收机之间的带宽至少要两倍于数字载波调制的带宽 - Sunimage digital carrier is another product for digital period . after the product appear on market , it has got good reputation and affirmativeness form the profession
产品自投放市场以来，在海内外已经获得良好的声誉，并得到行业内非常宝贵的认同。 - In the last , test and optimization of dvb - c modulator system are addressed . methods of test and some items which should be paid attention of digital carrier level and rate of carrier to noise 、 relationship between ber and c / n 、 mer ( modulator error rate ) are given , some test results got by analyzer are all up to dvb - c test standard
给出了数字载波电平与载噪比( c / n ) 、误码率( ber )与载噪比( c / n )关系、调制误码率( mer )测试的方法与测试注意事项,通过分析仪等分析得到结果包括列表和图示,达到了dvb - c规定的各项指标。 - Firstly , on the base of analyzing psk ' s theory and audio - card ' s constitute and data transfers , bdpsk and qdpsk soft - modulation and soft - demodulation systems based on audio - card are studied and implemented , including generating digital carrier sequence , synchronizing carrier , designing filter , sampling and judging , etc . the system adopts coherent demodulation method , synchronizing carrier adopts costas loop
本文首先分析了调相信号调制解调的基本理论和多媒体计算机( mpc )声卡组成原理及数据传输等方面的内容，然后研究并实现了基于计算机声卡的bdpsk和qdpsk信号软件调制解调系统，内容包括数字载波序列的产生、载波同步、滤波器设计，信号的抽样判决等。