现代无线通信技术

合集下载
  1. 1、下载文档前请自行甄别文档内容的完整性,平台不提供额外的编辑、内容补充、找答案等附加服务。
  2. 2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
  3. 3、如文档侵犯您的权益,请联系客服反馈,我们会尽快为您处理(人工客服工作时间:9:00-18:30)。

(1)RadioTransmission Interface of The Digital Pan European Mobile System

泛欧数字移动通信系统无线电发射接口

引言

本文描述的是移动通信系统的无线电发射接口规格,这种规格是根据不同的无线电接入技术(FDMA频分多址,TDMA时分多址,),以及不同的调制和编码方案,在比较了硬件实验设备之后确定的。本文讲述了这种规格的选择过程,然后对无线接口规范,以及在频率复用方面展示的预期性能进行了描述。同时,根据本规范,也提出了在法国建立验证硬件测量结果的系统。

(2)The Wireless Revolution

无线革命

引言

本文对无线通信目前的需求和近期发展进行了描述。对用于全球无线资金进行了一个预估。同时对无线通信技术方面的运用到的器材和技术进行了讨论,并且呈现了一些研究结果。

(3)Overview of wireless personal communications

无线个人通信的概述

引言

本文对无线通信现状进行了概述,包括正在进行的一些相关技术研发项目,无线通信的标准,频谱分配等。在本文中,作者讨论了蜂窝无线电、无绳电话和无线数据系统。对目前和计划中的无线通信发展进行了总结。本文主要讨论的是无线通信广泛的覆盖面问题,并且对现有数字蜂窝和数字无绳系统的空中接口进行了简要讨论,因为空中接口承载依赖于系统的容量,该系统可以使用的环境,以及在设备的成本和复杂性

(4)blocking,hand-off and traffic performance for cellular communication systems with mixed platforms

混合平台的蜂窝通信系统阻塞,切换和流量性能

引言

Cellular communication systems that support a mixture of platform types distinguished by different mobility characteristics are considered. A tractable analytical model for traffic performance analysis is developed using multidimensional birth-death processes and the method of phases. The framework allows consideration of homogeneous and nonhomogeneous systems, a broad class of dwell time distributions, and 'missed' hand-off initiations. Cut-off priority for hand-offs and several platform types are considered to demonstrate the approach. The effects of different mobility parameters and of imperfect detection of hand-off needs are examined. Theoretical performance characteristics are obtained. These exhibit carried traffic, hand-off activity, blocking probability and forced termination probability for each platform type. The realisable exchange of blocking for hand-off performance is shown. Computational issues are discussed and a method for extrapolating performance characteristics for systems with many channels is presented。

本文讨论了一种支持混合平台类型的蜂窝通信系统,这种混合平台的类型是由不同的移动特性来区分的。本文采用多维生灭过程和阶段分析方法,建立了一个用于通信性能分析的简单模型。该模型允许考虑均相和非齐次系统,广泛的停留时间分布。在描述该方法的过程中,考虑了切断优先级和一些平台类型。也检验了不同的流动参数影响,以及不完善的检测越区切换的需要。取得了理论性能特性。这些展品进行通信,手断活动,阻塞概率和强制中断概率为每个平台类型。示阻塞用于越区切换性能的变现交换。计算问题进行了讨论,并外推的性能特性与许多通道系统中的方法。

(5)a simulation study of urban in-building frequency reuse

在城市建设的频率复用的模拟研究

Abstract

Cellular communication systems that support a mixture of platform types distinguished by different mobility characteristics are considered. A tractable analytical model for traffic performance analysis is developed using multidimensional birth-death processes and the method of phases. The framework allows consideration of homogeneous and nonhomogeneous systems, a broad class of dwell time distributions, and 'missed' hand-off initiations. Cut-off priority for hand-offs and several platform types are considered to demonstrate the approach. The effects of different mobility parameters and of imperfect detection of hand-off needs are examined. Theoretical performance characteristics are obtained. These exhibit carried traffic, hand-off activity, blocking probability and forced termination probability for each platform type. The realisable exchange of blocking for hand-off performance is shown. Computational issues are discussed and a method for extrapolating performance characteristics for systems with many channels is presented

支持由不同的移动特性区分平台类型的混合物的蜂窝通信系统中被考虑。采用多维生灭过程和阶段的方法被开发用于通信性能分析一个听话的分析模型。该框架

相关文档
最新文档