coding rate meaning in Chinese
符号化速度
Examples
- In the end , implementation of if digital receiver unit of tdrss user transponder by the method of fpga and dsp cooperation design are completed successfully , which leads to good ds - ss if receiver design for the signal whose carrier frequency is 3mhz , pseudorandom code rate is 3mchips / s , data rate is 10kbps , frequency offset is no more 1khz , and modulation mode is bpsk
最后，完成了该中频数字接收机设计，并对其进行调试和测试。测试结果表明，该接收机能对载频为3mhz ，频偏不大于1khz ，伪随机码速率为3mchips / s ，信息码速率为10kbps ， bpsk调制的直接序列扩频中频信号进行接收，基本满足设计要求。 - Abstract : by comparing the channel capacities hetwem orthogonal space - time block coding and multi - antenna array system over rayleigh fading channel , some capacity loss for orthogonal space - time block coding is obtained , which is a function of the code rate , the rank of channel matrix and the number of transmitter and receive antennas , although the system of orthogonal space - time block codes is simple and easy to implemented . if is also shown that there is no capacity loss only if both the code rate and the channel matrix rank are all one
文摘:在研究瑞利衰落条件下正交空时分组编码信道容量的基础上，将其与多发送多接收天线系统的信道容量进行了比较.比较结果表明，正交空时分组码虽编码简单，易于实现，但在信道容量方面存在较大的损失，损失的程度与编码码率、信道矩阵的秩及收发天线数等因素有关.进一步研究表明只有当编码码率和信道矩阵的秩都为1时，才没有信道容量的损失 - One important feature of radio signals ’ is that the signals are easy to catch and to disturb . in order to disturb the radio signals , parameters , including code rate , modulation , protocol , protection methods and channel coding , about satellite ’ s signals should be known . so , it is possible to receive the data from satellites and obtain lots of information from it , and even to destroy the undesired information
卫星通信系统的遥控遥测信息都是通过无线信道传递,而无线电信号的一个很重要的特性就是发射易被接收、易被干扰,实现干扰的前提是对卫星信号参数的极大了解,这包括明确信号的码速率、调制方式、所用协议、保密措施及信道编码等,因此,通过接收卫星数据以获取大量的未知信息,甚至破坏掉对己的不利信息就成为可能。 - Optical multi ? wavelength networks have attracted much research interest recently and have been developing quickly due to their large bandwidth , their transparence of transmission code rate , data format and mode of modulation , their excellent possibility to upgrade , their simple and feasible management and powerful existence
其巨大的传输容量和对传输码事、数据格式及调制方式具有的透明性，良好的可扩展性，网络运行和管理的简单易行，强大的生存性使其发展越来越迅速，成为当今的研究热点。 - Ds signal is twice modulated with the rapid pseudorandom noise sequence and the carrier . so it appears cyclostationary . in the field of spectral correlation , ds signals appears its characteristic as fallows : for the amplitude of spectral correlation , the information of carrier frequency and pn code rate are contained on the spectrum frequency equal to zero sheet , and also the pn code rate is contained on the sheet of spectrum frequency equal to carrier frequency ; for the phase of spectral correlation , the information of carrier initial phase is contained on the sheet of cyclic frequency equal to double carrier frequency
Ds信号是经过高速伪随机序列和正弦载波二次调制的宽带信号,因此具有周期平稳特性,它在谱相关域表现为:幅频特性在谱频率等于零截面切片上包含了载频和伪码速率信息特征,在谱频率等于载频截面切片上包含了伪码速率信息特征;相频特性在循环频率等于两倍载频截面切片上包含了载波初相信息特征。