可变速率 meaning in Chinese
variable speed
varible bit rate
Examples
- Optical code division multiple access ( ocdma ) is a communication mode which introduces the code division multiple access ( cdma ) technology into optical fiber communication system . besides providing asynchronous communications access , ocdma system has many advantages , such as high capacity , security against interception , suppression of narrow band disturbances , capability in forming variable bit rate networks and multi - rate networks . it implies a great challenge for the development of future communication networks , especially all optical networks
光码分多址( ocdma )是将码分多址( cdma )技术与大容量的光纤通信技术相结合的一种通信方式，其主要优点表现在如下几个方面：允许多个用户随机地接入同一信道：可构成真正“透明”的全光通信网络；具有良好的安全性；允许可变速率或多速率传输，并可同时提供多种业务支持；具有优良好的抗干扰能力，并能够充分地利用石英光纤的可用带宽。 - It is based on the platform of hardware of fpga , dsp , d / a to realize the concise and full - function digital variable bit rate test signal resource . this paper discuss the ways of full digital if and realize it , certainly the ways to realize the carrier frequency , sub - carrier frequency and variable bit rates with dds technology is also presented
本课题是以fpga 、 dsp 、 d / a为硬件平台，设计实现了结构简明，功能完整的全数字可变速率测试信号源，讨论并实现了中频频段如何实现全数字的方法以及用dds技术实现载波频率，副载波频率，码速率的方法。 - In 1997 , tia has released the standard of is - 127 , it is service option 3 of is - 95 and the voice encoder / decoder standard of the third mobile communication , the core algorithm of this standard is enhanced variable rate codec , the shortened form is evrc
Tia于1997年正式推出is - 127标准，它是is - 95的可选语音服务标准( serviceoption3 )和第三代移动通信系统cdma2000的语音编解码标准，此标准的核心算法是增强型可变速率语音编码器( enhancedvariableratecodec ，简称evrc ) 。