| 1. | Based on the discussion of chapter two , chapter three gives the baseband transmission architecture of ofdm communication system
第三章在上一章讨论的基础上，给出了ofdm通信系统的基带传输结构。 |
| 2. | Also designed this part of correspondences procedure process and procedure codes . the thesis takes a simple introduction about the data transmission on base band
论文对数据基带传输编码做了简单介绍，阐述了数字基带信号的码型选择的原则。 |
| 3. | The main contributions of this dissertation include : introduce the basic concept and class of pcma and then set up the base band transmission model
本文承担的主要工作如下: 1 、介绍pcma技术的基本概念与分类,分析其原理,然后建立了系统的基带传输模型。 |
| 4. | The signals of multi - channel sensor at measuring spot were processed and translated by signal encoding technology to fuse into a baseband signal and then the signal was transmitted directly or in frequency - hand mode
该方法利用信号编码技术对测控现场的多路传感器信号进行处理和变换，使其融合为一路基带信号后，或直接以基带传输或以频带传输。 |
| 5. | The single dsp can transmit baseband signal to digital up converter and receive baseband sample signal from digital down converter through the control of interrupt signal at the same time . the stability and reliability of complete digital transmission system can be realized by this way
本文利用dsp的中断控制,在单片dsp内发送基带数字信号同时处理来自数字下变频器的基带数字信号,实现了稳定、可靠的全数字中频与基带传输系统。 |
| 6. | Chapter iv advances a proposed systematic scheme of power line receivers in accordance with homeplugl . o on the basis of analysis in chapter iii , present the implementation of an ofdm baseband transmission platform based on mpc860t embedded system
第四章在前几章的理论基础上，提出了适合于homeplug1 . 0的电力线载波通信接收机的系统方案，同时介绍了基于mpc860t的ofdm基带传输系统平台的嵌入式实现，对整个平台的硬件和软件构成都有较为详细的介绍。 |
| 7. | New standards are presented continuously , link media type is developing and the line speed is updating continuously . in 1998 , the ieee802 . 3z gigabit ethernet standard was ratified , it use fiber as it ' s link media , line speed was upgraded up to 1 , 250 mbps . it offers the users wide digital highway
到1998年， ieee正式提出了编号为802 . 3z的千兆位以太网标准1000base - x ，采用光纤作为传输介质，使用高达1250mbps的基带传输速率，为用户提供了宽阔的数字高速公路。 |
| 8. | Chapter 3 treats the principle of the best tuning synchronization loop , and the realization of the data - aided timing synchronization loop . together with the characterization of band - limited signals without biter symbol interference and the one of atsc - vsb signals , the chapter proposes a scheme for implementing timing synchronization loop used in hdtv
第三章首先论述了最佳位同步环的原理，以及数据辅助位同步环的实现，并结合无码间干扰的基带传输特性及atsc - vsb的特点，提出了hdtv中位同步的实现方案。 |
