In chapter 2 , it introduces the basic theory of the software radio , which includes the architecture of software radio , the sampling theory and multi - rate signal process 第二章介绍了软件无线电的基本架构、软件无线电中的信号采样理论及多速率信号处理技术。
So in chapter 2 , the thesis introduces the related theory of software radio , such as the sampling theory , multi - rate signal processing , and high efficient digital filter 第二章将对包括信号采样理论、多速率信号处理以及高效数字滤波器等的相关理论进行说明。
So it is important to pay more effort in researching new multi - band and multi - rate and multi - mode intelligent wireless transceivers with updatable and open structures 因此，需要研究新的多波段、多速率、多模式、可升级和具有开放性结构的智能型无线接收发送机。
Moreover , based on poly - phase signal processing and interpolation , a timing variable cic ( cascaded - integrator - comb ) filter based method for sampling rate conversion is analyzed 另外，结合多速率多相信号处理和nco内插控制思想，分析了时变cic内插滤波器的采样率变换实现。
In order to support multi - rate transmission in ds - cdma , many cdma techniques such as multi - code ( mc ) scheme , orthogonal variable spreading factor ( ovsf ) and variable modulation have been used 在ds - cdma系统中多速率传输的方法有很多种，例如多码方案( mc - cdma ) ，正交可变扩频增益方案( ovsf )和多调制方案等。
Contek vt - 900v dsu supports g . shdsl standardized multi - rate symmetric application , and is designed to transmit symmetrical data service across a single copper pair at data rates from 64kbps to 2304kbps Contekvt - 900v支持g . shdsl标准的多速率对称应用，可在一对铜线上对称传输数据，传输速率范围为64kbps到2304kbps 。
In chapter two , a structured space - time multiuser cdma signal model is built as the basis of the whole research , combing space - time channel models and multirate / multichannel cdma signal models 第二章组合空时信道模型和多速率多通道cdma信号模型，构造了结构化的空时多用户cdma信号模型，作为全文研究工作的基础。
The structure and theory bit error rate of these schemes are introduced in this thesis . variable spreading gain cdma system is a candidate system that accommodates mixed traffic types , and supports variable data rate service 论文深入研究了cdma中的两种多速率方案，即可变扩频增益方案( ovsf )和多码方案( mc - cdma ) 。
Finally , two important theories of the multi - rate signal processing , interpolation and decimation , are discussed . the paper also gives their computer simulation results and fpga implementation 最后讨论了多速率信号处理中两种重要的信号处理? ?内插和抽取，对它们的实现方法进行了软件仿真，同时给出了它们的fpga实现。
Modern military tactics cooperativity communication raises many new requirements including multi - mode , multi - band , and expandable performance , etc . so , developing new fh station has important sense in military strategy 现代战术协同通信也对军用电台提出多模式、多速率、可扩展等许多新的要求。因此，研制新型跳频电台具有十分重要的战略意义。
