《我国移动数字电视的技术及应用》-毕业论文.doc

精品 移动数字电视的技术及应用 摘　要：作为一种新的媒体，移动数字电视具有安装简便、覆盖广泛、反应迅速、移动性强的特点，它除了具有传统媒体宣传和欣赏功能外，还承担着城市应急预警、交通、食品卫生、商品质量等政府安全信息发布的重任。随着技术的发展和研究的不断深入，为了满足手持、便携设备接收数字电视节目的需求，人们改进了地面数字电视在移动接收、频谱效率、单频网、抗干扰、系统灵活性等方面的功能，发展出了地面数字移动电视技术。它通过无线数字信号发射、地面数字接收的方式播放和接收电视节目，可以广泛应用在处于移动状态的手机或交通工具上的接收设备中。 关键词：移动数字电视；地面数字广播系统；应用需求 The technology and application of Chinese mobile digital TV Abstract：　As a new media，mobile digital TV has the characters of easily installed，wide coverage，quick response and strong mobility，which not only has the traditional function of media campaigns and appreciation，but also bears the responsibilities to releasing the government’s security information of the city emergency warning，transportation，food hygiene and the commodities’s quality．With the progressing of technology and the deepening of research，in order to meet the hand-held，portable devices to receive digital TV programming needs，it is to improve the terrestrial digital TV in mobile reception，spectrum efficiency，single-frequency networks，interference，system flexibility，etc．function，and make out the terrestrial digital mobile TV technology．It throughs the wireless digital signal transmission，reception of terrestrial digital broadcast and receive television programs．It can be widely used in the mobile phones of a mobile state or in the acceptances of a transport equipment． Keywords：　mobile digital TV；　terrestrial digital broadcasting system；　application requirements 目 录 TOC \o 1-2 \h \z \u HYPERLINK \l _Toc516665491 1 绪论 PAGEREF _Toc516665491 \h 1 HYPERLINK \l _Toc516665492 1.1 选题目的及意义 PAGEREF _Toc516665492 \h 1 HYPERLINK \l _Toc516665493 1.2 研究的背景 PAGEREF _Toc516665493 \h 2 HYPERLINK \l _Toc516665494 1.3 本文主要研究内容 PAGEREF _Toc516665494 \h 2 HYPERLINK \l _Toc516665495 2 移动数字电视概述 PAGEREF _Toc516665495 \h 3 HYPERLINK \l _Toc516665496 2.1 移动数字电视简介 PAGEREF _Toc516665496 \h 3 HYPERLINK \l _Toc516665497 2.2 移动数字电视的优势 PAGEREF _Toc516665497 \h 3 HYPERLINK \l _Toc516665498 2.3 我国移动数字电视的发展现状 PAGEREF _Toc516