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毕业设计

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41.可接收数字广播节目的GSM移动终端的硬件设计,毕业设计

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I 可接收数字广播节目的 GSM 移动终端的硬件 设计 专业： 通信工程 学号： 1002584 姓名： 许恒森 指导教师： 胡兰馨 中文摘要 随着科技的发展，人们生活水平的提高， 传统的模拟广播越来越不能满足人们的需求 ,于是一种全新的 广播方式 数字音频广播 (Digital Audio Broadcasting)诞生了 .目前，数字广播在欧日美等发达国家已经发展成熟，而在我国正处于初级发展阶段。相对而言， GSM 系统则是目前全球覆盖范围最广的第二代无线网络，在我国已经发展成熟，其覆盖范围在中心城市几乎达到了 100%，在 边远地区也达到了 80%以上。而随着手机的越来越普及，把各种功能添加到手机上已经成为一种新的潮流，现在的手机可以玩游戏，上网，听音乐，接收模拟广播，甚至已经成为一部小型的个人电脑。 本课题希望能设计出这样一种移动终端：它可以接收并播放数字音频广播节目，而该广播节目是通过 GSM 网络发送并传输的，同时它还是一个 GSM 手机。虽然可能由于现有的 GSM 网络的带宽有限，实现起来有一定的困难，但 3G 网络时代的即将到来，将解决这一问题， 可以看出来，数字 音频 广播在技术上确实和3G 手机存在相当大的重合性 。 由于我国数字 音频 广播正 处于发展阶段， 而数字音频广播和 GSM 手机的结合，将有着广阔的市场前景，并且可以减少信号发射基站的重复建设。如果研究成功，将极大的推动数字音频广播在我国的发展。 本文主要介绍 DAB 系统和 GSM 系统的原理，课题的可行性分析，系统电路的设计过程，电路中所使用芯片的介绍及最后的调试过程。 关键字： DAB， MUSICAM， GSM， GPRS nts II Hardware Design of GSM Termination for Receiving DAB Program Abstract Along with the development of technology and the enhancement of people living standard, the traditional simulated broadcasting cannot meet peoples need, therefore one kind of brand-new broadcast way-Digital Audio Broadcasting was born.At present, the digital broadcasting has already developed maturely in the developed country such as Europe,Japan,America and so on . however, it is being at the primary development phase in our country. Comparetively, the GSM system is the second generation of wireless network which has the the broadest cover scope in the whole world at present.It has already developed maturely in our country, its cover scope had achieved nearly 100% in the key city, had also achieved above 80% in the remote border district. However, along with the popularization of the mobile phone, adding various functions to the mobile phone already becomes one kind of new tidal current, the present mobile phone may play the game, access the internet, listen to the music, receive the simulated broadcasting, even became a small personal computer. This paper expect to design this kind of mobile termination: It may receive and broadcast the digital audio broadcasting programs, but this broadcasting programs are transmiting through the GSM network, simultaneously it is a GSM handset. Although it is possiblely difficult to realize because of the limitation of the existing GSM network band width, but the 3G network time soon arrived, and will solve this problem.It might be seen that, the digital audio broadcasting has many superposition with 3G handset technically.Because our country digital audio broadcasting is being at the development phase, the union of the digital audio broadcasting and the GSM handset has broad market prospect, and may reduce the redundant building of signal launch base depots. If studies successfully, it enormously impetus the development ofdigital audio broadcasting in our country. This paper mainly introduced the principle of the DAB system and the GSM system, the feasibility analysis of the topic, the design proc