direct spread meaning in English
直接扩展
Examples
- Chapter 4 makes up a modulate and demodulate system based on direct spread msk
第四章中构建了一个直扩msk调制解调模型。 - By analyzing the spectrum feature and correlation feature of walsh sequence , we find that it has the spectrum feature of ds / fh ( direct spread / frequency hopping ) communication mode
我们分析了walsh函数序列的频谱特性和相关特性，结果表明，该序列具有ds fh (直扩跳频)的频谱特性。 - Combining walsh sequence with direct spread spectrum sequence , we can construct hybrid ds - fh spread - spectrum communication mode . this is very important for the mode to have better performance on anti - multiple - access inference and anti - near - far inference
将walsh函数序列与直接扩频序列相结合构成的ds - fh混合扩频通信方式对于系统抗多址干扰和远近效应具有重要意义。 - At last , this thesis use montecarlo simulation method in the given model of direct spread cdma system to calculate the error rate of system which use the every mentioned pn sequences one by one . the simulation tool is matlab
文中最后采用蒙特卡洛仿真方法对直扩cdma系统模型应用不同伪随机序列进行扩频的情况进行了仿真，并计算出了系统的误码率，所用仿真工具为matlab 。 - This dissertation analyses the design idea and method for the direct spreading sequence msk modulate system with an error control function . it gives the matlab simulate result and the performance analysis through the modeling process
本文阐述和分析了一个带有差错控制的直扩序列msk调制系统的设计原理与方法,详细分析和推导了系统的建模过程并给出基于matlab的仿真结果与性能分析。