In the process of implementation , it is essential to find a scheme to solve the following problems : ( identification of the logic channel type of signals from handsets , which is the key to determine which decoding module should be called 本论文的主要任务是用dsp ，通过几个模块之间的联调，实现基带处理的接收模块的功能。接收模块主要完成gmsk解调和解码功能，并将所解码出的手机上行的信号传递给信令模块。
Estimation of doppler spread width which is equal to the maximal doppler frequency is an important way to calculate the velocity of the mobile equipment . the ways of estimating the frequency offset and doppler spread width in wcdma system are studied in this paper 准确地估计频偏进而进行频偏补偿可以使基带处理时的信号更加准确;准确地估计移动台的最大多普勒频偏,可用于估计移动台速度,进而用于切换预测等。
So in the following research , we should consider about how to implement hsdpa techonology with least change of old system , especially for base - band board in nodeb which is the kernel part of data processing in physical layer 作为后续开发者,需要考虑如何在原有系统基础上做最小的改动来实现hsdpa技术。尤其是nodeb中的基带处理部分,作为物理层数据处理的核心,希望增加最少的硬件资源,利用现有dsp芯片实现高速率传输。
The goal of this thesis is to accomplish base - band channel coding / decoding , fh framing / de - framing and fh synchronization , and also to control the modulator and demodulator in the prototype system . all these functions are implemented with a tms320vc5409 dsp 作为项目的一个重要组成部分，本文采用dsptms320vc5409实现了基带处理部分的信道编解码、跳频意义的组拆帧和跳频同步、并对调制解调芯片读写寄存器进行了配置。
Experiment results with 16 bit fixed point dsp ( tms320vc5409 ) are presented to show the efficiency of the dsp program . chapter 4 deals with the implementation and debugging of isr ( interrupts service routine ) , and the fpga schematic design of its logic circuits is discussed as well 第四章介绍了tms320vc5409的中断资源，并就基带处理板多dsp间通信时中断的实现，给出了发射dsp中断服务程序设计的具体流程和实验结果。
With the kernel of base band module , this paper begined with the systematic configuration of ais system , combined with the specific protocol , clearly clarified arithmetic simulation and realization . we certificated the credibility and stability of ais system through the examination , the error is in the permissive range . also it can make sure the safe of navigation , improve marine communication capability , accelerate the development of the navigation for our country 本文从ais系统的整体结构入手,结合具体的协议,以基带处理模块为核心,从硬件设计和软件算法仿真及实现进行详细的阐述,并且通过试验证实了ais系统的可靠性和准确性,产生的误差均在允许的范围内,能保证航行的安全,提高海上信息传输能力,促进我国航海事业的发展。
We first retrospect the development history of relevant fields , and introduce the construction and rudiment of the base - band processing unit . after analyzing convolutional code principle and viterbi algorithm , we determine to use ( 2 , 1 , 9 ) convolutional code in this designing , and give general introduction of develop platform and designing language . then we explore the concrete realization of base - band processing unit , and bring up overall designing scheme 文中回顾了相关领域的发展历史,给出基带处理单元的组成及其基本原理,对卷积码原理和viterbi算法进行了分析,确定了用于本设计的纠错码类型( 2 , 1 , 9 )卷积码,同时对开发平台及设计语言进行了简要介绍。
The author ' s main work lies on the implementation of baseband procedure hardware according to the military standard . this paper emphasizes in the estimation of lqa ( link quality analysis ) parameters during ale , and specify synchronization method during ale . finally the paper narrate the design scheme and implementation method of hf radio station 作者的主要研究工作集中在按照军标的规定实现了ale系统基带处理部分的硬件设计，本文着重分析了在自动链路建立过程中lqa ( linkqualityanalysis )参数的估算问题，并研究了自动链路建立时的同步方法，最后阐明短波无线电台实验系统设计方案与实现方法。
This paper studies using asic ic2001 which is zte independently - developed and dsp from ti company to finish the driver of rake receiver and symbol processing function based on 3g base band . achieving the chip mapping , resource planning , the driver of baseband realization and experimental validation with the developing tool ccs ide supplied by ti company 本文研究运用中兴公司自行研发的专用集成芯片ic2001与ti公司的dsp芯片共同完成第三代移动通信( 3g )基带处理上rake接收机和符号级处理功能的基带系统驱动,在ti公司提供的开发工具ccs集成环境中完成芯片映射、资源规划、系统驱动方案实现及进行实验验证。
The paper is arranged from up to down . from umts to utran , then nodeb and baseband processing are proposed , at last the downlink symbol rate dsp is the corn and importance of the paper . the paper tries to clear the relationship between systems and system and sub - system , and gives a complete concept to reader 从umts通信系统到utran的结构,然后关注到nodeb和基带处理系统,最后是下行符号级处理dsp的具体实现。其中最后的实现是论文的核心和重点,论文也力求阐明各个系统之间以及系统与其子系统之间的关系,给读者一个整体的概念和完整的认识。
