基于EDGE系统信道估计实现方案的研究

研究了基于ＥＤＧＥ系统接收机中信道估计的实现方案，并对算法的各项性能做出评估。首先论述了算法的采用及其理论依据。接着，说明了信道预估计的原理及方法。最后，针对ＭＡＴ－ＬＡＢ及 ＤＳＰ上的仿真结果，比较了各项系数对于系统性能改善所具有的影响和作用，对系统特性作了较为详细的分析总结。     

EDGE技术的测试和研究

对EDGE技术进行了介绍，并对EDGE技术的现网测试进行了说明，对于EDGE技术的功能特点及现网应用的模型、性能指标进行了研究和探讨。     

M5-EDGE分布式取指模型设计

为解决M5-edge模拟器的理想化集总式取指令结构对基于EDGE体系结构设计空间探索的限制问题,对原模拟器的取指令前段进行分布式设计,包括总体的功能、具体的取指单元及单元间的互连网络设计,并在取指令块头的方式上设计了固定方式和循环方式两种方案.通过对实现后的结构进行在不同分布单元数量条件下的仿真分析,得到从理想集总式取指结构到实际分布式结构的性能下降关系和不同取指令块头方式的优劣.通过进一步分析,得出通信延迟和缓存缺失率对处理器性能的影响.     

双路信道无线视频传输系统设计

为了在限制带宽和高误码率的公用移动通信网络上获得高质量的实时视频传输,提出了一种基于双路增强型数据速率GSM演进技术(EDGE)信道的无线视频传输原型系统。系统以高性能的数字信号处理器(DSP)为核心设计无线视频终端,采用H.264编码,利用双路EDGE传输信道,提供较高的传输带宽。运用多缓冲的发送机制和差错控制策略,将视频流发送到视频服务器。实验结果表明,CIF格式的图像传输能达到基本实时的要求。     

采用16QAM的GSM/EDGE调制技术

分析了GSM/EDGE信号的8PSK调制方案,在兼容现有GSM/EDGE系统、不改变该系统发送和接收滤波器的基础上,将GSM/EDGE的8PSK调制方式改进为16QAM调制方式,使得在相同的信噪比情况下,每时隙数据速率达到91.2 kbit/s,比现有的EDGE系统每时隙传68.4 kbit/s的传输速率多22.8 kbit,从而提高了数据传输速率,进一步改善了GSM/EDGE系统性能.     

EDGE无线网络规划

本文分析讨论了在8PSK调制方式,EDGE需如何进行覆盖、容量和频率的规划,以达到尽量减少对现网的影响下,提高EDGE网络的整体性能.     

EDGE技术在电力设备远程监控系统中的应用

阐述了EDGE无线路由通信系统的性能优越性,对系统硬件设计和软件设计进行了分析。将EDGE技术应用于电力系统监控中,保证了现场对实时性和可靠性的要求。     

Ater_PS优化及规划评估探讨

文章在介绍了EDGE网络配置之后,主要论述了Ater_PS出现高负荷或拥塞时对EDGE性能的影响,提出了日常工作中Ater_PS优化及规划评估的方法.     

The Data Age of Mobile Cellular Network in Germany and China： Policies,Technologies and Markets （Part I）

The UMTS auction in 2000 brought approximately 100 billion DM （Deutsche Mark） for the German National Treasury. T-Mobile （D1-Netz）, Vodafone （D2-Netz）, E-Plus （E1-Netz） and 02 （E2-Netz） have gradually evolved from GSM to full-fledged UMTS operators over the past years. The conglomerate of China Telecom was split twice. China acceded to WTO and promulgated the FITE Provisions. MIIT （Ministry of Industry and Information Technology） became the regulator and China Netcom was incorporated into China Unicorn in 2008. Most recently the layout of 3G future has been reconfirmed by MIIT. Voice service has remained the main source of income in both countries and operators have continued to focus on voice quality and network availability in their respective 2G networks. Because value-added and higher-speed data applications have been gaining market attention, 2.5G and 3G infrastructure has increasingly become the focal network strategy for the operators since the beginning of the new century. Germany has rolled out WCDMA/UMTS services on a large scale in the consumer market, while China has adopted all three 3G standards （TD-SCDMA, WCDMA/UMTS, CDMA2000）, which shall gradually capture a wider 3G subscriber base. The summary shows that the development of the cellular technology and market in Germany and China can be discussed in three distinct historical periods. The conclusion suggests that the case of the cellular technology appears to be consistent with and applicable to a number of arguments widely disputed in economics and management related to technology and innovation, such as dominant design, technology waves/ S-Curve, disruptive technologies, Technology Adoption Life Cycle.     

EDGE网络的规划及资源配置研究

本文在现有网络分析的基础上,进行了EDGE数据网的规划,并通过仿真对规划结果进行了验证,最后对语音和数据网络的资源配置方法进行了研究,提出了相应的资源配置方法。