单频网

DVB-T单频网系统的PCR校正

PCR Correction in DVB-T SFN System

DVB-T单频网同步原理分析

Analysis of DVB-T SFN Synchronization Principle

上海地区的DVB-T单频网设计

A Planning Approach for DVB-T Single Frequency Network in Shanghai Area

DVB-T调制器单频网同步系统的设计与实现

Design and implementation of SFN synchronization system in DVB-T modulator

小功率DVB-T单频网覆盖分析

Analysis of Low - power DVB-T Single Frequency Network

单频网（SFN）是目前地面数字电视广播系统覆盖最好的方法之一。

At present , SFN is the best method of DTTB coverage .

本论文研究在DVB前端通过一个多功能的包处理器来实现复用、Internet接入DVB网络以及单频网同步的功能。

In this paper , how to realize multiplexing , linking Internet into DVB network and synchronizing SFN using a package processor in DVB head-end is studied .

介绍了一个单频网适配器的设计方案，该方案由基于FPGA实现的核心功能模块和基于ARM嵌入式CPU实现的控制模块组成。

This paper introduces a design of single frequency network adaptor , which consists of a core functionality module based on FPGA and a control module based on an ARM embedded CPU .

河南省DMB-T单频网信号覆盖率的计算

Mobile Digital Television Signal Coverage Calculations of He-Nan Extensive DMB-T Single Frequency Network

单频网（SingleFrequencyNetwork，SFN）组网规定：单频网发射台要同时在同一个频段上发射相同的无线信号，即各个发射机广播的信号要求频率同步，时间同步和码元同步。

SFN ( Single Frequency Network , SFN ) Network : SFN transmitter simultaneously with the launch of a band on the same wireless signal that the transmitter frequency radio signal synchronization requirements , time synchronization and symbol simultaneously .

单频网（SingleFrequencyNetwork，SFN）是地面数字电视广播的重要组网方式，在频率资源利用和信号覆盖等方面与多频网比较具有明显优势。

The SFN ( Single Frequency Network ) is an important networking of DTMB . From the viewpoint of the exploitation of frequency resources and signal coverage , it has more obvious advantages than MFN ( Multiple Frequency Network ) .

研究了DVB-T单频网系统下节目参考时钟校正（PCR）的重要性，介绍了非均匀延迟的概念，最后提出一种改进的基于相同时基的PCR校正方法。

Based on DVB-T system , this paper discusses the importance of PCR correction in DVB-T SFN system . Furthermore , the concept of uneven-delay and an improved PCR correction method based on the same-time-base are presented .

但是，多小区MBMS的性能受限于单频网的拓扑结构、用户移动性和业务分布等因素，因此如何有效地进行单频网组网是一个亟待解决的问题。

But , the properties of multi cell MBMS limited in the topological structure of SFN , the mobility of users and the business distribution .

介绍地面数字HDTV的单频网广播技术，并与单载波主发射机方案进行比较，提出OFDM系统中的一种信道估值新方案，它能显著地改善OFDM系统的频谱利用率。

This paper introduces single frequency network broadcasting technique for terrestrial digital HDTV and compares SFN scheme with main transmitter scheme . A new channel response estimation technique for OFDM system is proposed . It can improve spectrum efficiency of OFDM system .

在简要介绍DVB-T单频网系统结构的基础上，着重分析了单频网适配器的原理以及兆帧、兆帧初始化包的结构，并举例说明了DVB-T单频网中发射机之间的同步原理。

The paper introduces the structure of DVB-T single frequency network , emphasises on analyzing the principle of SFN adapter and the structure of mega-frame and mega-frame initialization packet . Finally exemplifies how the DVB_T transmitters is synchronized in the single frequency network .

介绍了地面数字视频广播（DVB-T）单频网的基本概念与特点，分析了单频网的设计模型，给出上海地区DVB-T单频网的组网方式、场强分布与覆盖率。

This paper firstly explains the basic concepts and features of DVB-T Single Frequency Network , then analyzes the planning model for SFN , and finally gives the network architect , field strength and coverage rate of DVB-T Single Frequency Network in Shanghai area .

数字电视地面传输用单频网与单点发射的效果比较

Comparison between Single Transmitter and Single Frequency Network in DTV Terrestrial Transmitting

数字广播电视中的单频网技术

Single Frequency Network Technology in Digital Broadcast and TV

适用于大区域单频网的干扰消除方法

A Method of ICI Elimination in Wide Area SFN Systems with Long Delay

其次，本文提出了单频网适配器实现的整体方案。

Secondly , the integral scheme of SFN adapter 's implementation is proposed .

全固态发射机数字电视广播单频网的研究与实现

Research and Achieve of All Solid-state Transmitter Digital Television Broadcasting Single Frequency Network

一种国标地面数字电视单频网覆盖的规划方法

Method of DTMB Singe Frequency Network 's Coverage Planning

高速铁路无线单频网的研究

Research on High-speed Railway Wireless Single Frequency Network

首先，本文分析了单频网的组网方式和同步原理。

Firstly , we analyzed the structure of SFN and the principle of the synchronization .

本文详细介绍了单频网适配器的设计原理和结构。

This paper describe the principle and structure of SFN Adapter 's design in detail .

本文所研究的单频网适配器，是实现单频网组网的关键设备之一。

The SFN adapter studied here is one of the key equipments of the SFN .

本文对于调频同步广播单频网的建设，具有重要的参考价值。

It has the effective leading function for the construction of the FM sound sync-broadcasting single frequency net .

高速铁路移动电视单频网优化及接收终端性能分析

The Single Frequency Networks Optimization of High Speed Railway Mobile Television and Performance Analysis of the Receiving Terminal

通过调频同步广播试验组建单频网，可以利用有限的频率资源实现最大化覆盖建设。

We can construct the single frequency by the test , and use the frequency resource to implement the biggest covering .

相比传统的多频网，单频网具有节省频谱资源，方便频谱规划等优点。

Compared with traditional multi-frequency network , SFN has the advantages of saving spectrum resources , facilitating spectrum planning and so on .