1、现代移动通信在当今高度信息化的社会，信息和通信已成为现代社会的“命脉”。信息的交流主要依赖于计算机通信，而通信作为传输手段，与传感技术、计算机技术相互融合，已成为 21世纪国际社会和世界经济发展的强大动力。为了适应时代的要求，新的一代移动通信技术应时而生，新的一代移动通信技术即人们称之第三代的核心特征是宽带寻址接入到固定网和众多不同通信系统间的无隙缝漫游，获取多媒体通信业务。随着时代的进步、科技的创新、人们的生活要求的提高，移动通信技术更新换代速度相当惊人，差不多每隔十年移动通信技术就发生一次变革性换代，从上个世纪 80 年代的“大哥大”到现在的 3G 手机，其间发生了两次移动通信技术的变革，
2、从 1G 的 AMPS 过渡到2G 的 GSM，从 GSM 到 IMT-2000（即 3G 技术）。就我所知现代的移动通信技术有以下几方面的重要技术：1.宽带调制和多址技术2.频谱利用率提升技术3.软件无线电技术4.软件无线电技术5.网络安全和 QoS现代移动通信技术发展的七个新趋势:一、移动管理已从终端管理向个人管理和智能管理发展二、网络已从同步的数字电路向异步的数字分组和异步传递方式(ATM)发展;三、软件的开发已从算法驱动到面向过程和面向目标的趋势发展;四、信息处理已从话音发展到数据和图像;五、无线频谱的处理已从窄带模拟向窄带 CDMA 发展;六、计算机已从集中式处理发展到分布式服务器和
3、智能化处理;七、半导体器件已从每芯片 16 兆门/150MHz 速率的 VLSI 发展到 0.5 千兆门/350MHz 速率的 VLSI 和 2 千兆门 /550MHz 速率的 VLSI。在这种趋势的引导下，移动通信业务迅猛发展，它满足了人们在任何时间、任何地点与任何个人进行通信的愿望。移动通信是实现未来理想的个人通信服务的必由之路。在信息支撑技术、市场竞争和需求的共同作用下，移动通信技术的发展更是突飞猛进，呈现出以下几大趋势：1)网络业务数据化、分组化； 2)网络技术宽带化； 3)网络技术智能化；4)更高的频段；5)更有效利用频率；6)各种网络趋于融合。了解、掌握这些趋势对移动通信运营商和设
4、备制造商均具有重要的现实意义。Modern mobile communication technologyIn now highly the informationization society, the information and the correspondence have become the modern society “the life”. The information exchange mainly relies on the computer correspondence, but corresponds takes the transmission method, w
5、ith the sensing technology, the computer technology fuses mutually, has become in the 21st century the international society and the world economic development powerful engine. In order to of adapt the time request, the new generation of mobile communication technology seasonable and lives, the new
6、generation of mobile communication technology is the people said that third generations core characteristic is the wide band addressing turns on non-gap roaming between the rigid network and numerous different communications systems, gains the multimedia communication services.Along with the time pr
7、ogress, the technical innovation, peoples life requests enhancement, the mobile communication technology renewal speed is quite astonishing, almost every other ten year mobile communication technology has a transformation update, from the 1980s “the mobile phone” to presents 3G handset, during has h
8、ad two mobile communication technology transformation, transits from 1G AMPS to 2G GSM, from GSM to IMT-2000 (i.e. 3G technology). Knows modern on me the mobile communication technology to have the following several aspect important technology:1. wideband modulation and multiple access technique2. f
9、requency spectrum use factor lift technique3. software radio technology4. software radio technology5. network security and QoSmodern mobile communication technological development seven new tendencies :First, mobility management already from terminal management to individual management and intellige
10、nt management developmentSecond, network already from synchronized digital circuit to asynchronous digital grouping and asynchronous transfer mode (ATM) development;the three, softwares developments actuated from the algorithm to the procedure-oriented and face the goal tendency development;the four
11、, information processing have developed from the voice to the data and the image;five, wireless frequency spectrum processing already from narrow band simulation to the narrow band CDMA development;the six, computers have developed from central processing to the distributional server and intellectua
12、lized processing;the seven, semiconductor devices have developed from each chip 16,000,000,000,000 /150MHz speed VLSI to 0.5 /350MHz speed VLSI and 2,000,000,000,000,000 /550MHz speed VLSI.Under this tendencys guidance, the mobile service rapid development, it satisfied the people in any time, any p
13、lace to carry on the correspondence with any individual the desire. The mobile communication realizes in the future the ideal person-to-person communication service way that must be taken. In the information support technology, the market competition and under the demand combined action, the mobile
14、communication technologys development is progresses by leaps and bounds, presents the following several general trends: 1) network service digitization, grouping; 2) networking wide band; 3) networking intellectualization; 4) higher frequency band; 5) more effective use frequency; 6) each kind of network tends the fusion. The understanding, grasps these tendencies has the vital practical significance to the mobile communication operator and the equipment manufacturer.
