无线接入系统

互联网无线接入系统中IP报头压缩算法的研究

The Research on IP Header Compression Algorithms in Wireless Internet Access

IP多播在无线接入系统的实现与分析

Implementation and Analysis of IP Multicasting in Wireless Access System

IEEE802.16宽带无线接入系统中基于QoS的调度算法

Study on QoS Scheduling Algorithms in IEEE 802.16 Broadband Wireless Access System

802.16宽带无线接入系统的QoS保证和调度策略

QoS Guarantee and Scheduling Strategy for IEEE 802.16 Broadband Wireless Access System

宽带无线接入系统中长RS编解码的DSP设计与实现

Design and Implementation of Long-length RS-code on DSP in Broadband Wireless Access System

后3G无线接入系统的软硬件平台研究和设计

Research and Design for Beyond 3G Access Network Platform SYSTEM

一种准同步CDMA无线接入系统

A Quasi - Synchronous CDMA Wireless Local Loop

宽带无线接入系统WiMAX的应用与部署

The Application and Deployment of Broadband Wireless Access System WiMAX

如何最大限度地在宽带无线接入系统中为不同要求的服务提供QoS保证是一个非常重要的问题。

How to provide QoS guarantees for various traffic with different QoS requirements in fixed BWA system is a very important problem .

4G手机无线接入系统设计及实现

Design and Implement of 4G Mobile Wireless Intercept System

本文主要就基于OFDM的宽带无线接入系统所使用的纠错编码技术及可能的改进方案进行研究。

In this thesis , Error-Correction Coding technology of Broadband Wireless Access System based on OFDM and it 's possible improvement solution is researched .

IEEE802.16协议定义的宽带无线接入系统（BWA，BroadbandWirelessAccessSystem）具有组网安装维护方便，运营价格低廉，面向连接且保证服务质量的特点，正在成为未来网络接入技术的主导方向。

The IEEE 802.16 BWA ( Broadband Wireless Access ) system has many advantages , such as easy installation and maintenance , inexpensive operation , connection-oriented service and quality of service guarantee .

用射频微波电路集成技术设计第4代（4G）手机无线接入系统。

4G mobile phone wireless access system by RF / MW integrated circuit technology is presented in this paper .

本地多点分布系统（LMDS）是一种新兴的固定宽带无线接入系统。

Local Multipoint Distribution System ( LMDS ) is a new Fixed Broadband Wireless Access System .

SCDMA作为固定无线接入系统具有频谱利用率高、成本低等诸多优势。

As a WLL system , SCDMA has the advantages in frequency and cost effective .

为设计并实现宽带无线接入系统的差错控制，基于无线本地城域网标准IEEE802.16a，提出了三种TCM码的译码方案。

With the aim of designing and implementing the error control part in the wideband wireless access system , three decoding methods for TCM codes are proposed based on the wireless metropolitan standard IEEE 802.16a .

最后论述了WMN必将在未来宽带无线接入系统中取得广泛应用。

Finally , WMN is shown to have an extensive range of applications in future wireless wideband access system .

通过对矿井下的具体环境和UWB无线接入系统在井下应用存在问题的分析，证明该技术在煤矿井下应用的实际可行性。

By analyzing the special environment underground and existent problems in the application of UWB wireless access system underground , the practical feasibility of using the technology underground coal mine can be proved .

SCDMA系统是一种综合无线接入系统，能够提供基本的语音、数据业务及其它增值业务。

SCDMA system is a comprehensive wireless access system which can provide basic voice , data and other value-added services .

IEEE802.16是美国电气和电子工程师协会（IEEE）所制定的新一代宽带无线接入系统标准，本文介绍了IEEE802.16标准物理层结构以及SUI信道模型。

This paper introduces the physical layer structure of IEEE 802.16 , a standard for a new broad - band wireless access technology , and SUI ( Stanford University Interim ) channel models .

S-ALOHA协议在无线接入系统中的实现

S-aloha agreement applied to wireless access system

目前，OFDM技术已经成为未来宽带无线接入系统的基本实现技术之一，是解决高速数据在无线信道中传输问题的首选方案。

At present , OFDM has become one of the basic implementation techniques in the future broadband wireless access systems as well as one of the first schemes to solve transmission problems of high-speed data in wireless channel .

由蜂窝移动通信系统、短距离无线接入系统、WLAN、WiMAX等多种无线接入技术组成的异构网络，通过相互协作，可以为用户提供更加丰富多彩的服务。

Heterogeneous networks composed by cellular mobile communication systems , short-range wireless access systems , WLAN , WiMAX and other wireless access technology , can provide users with more colorful services by cooperation .

首先，论文讨论了固定宽带无线接入系统下的信道估计算法，比较了现有导频信道估计算法在SUI典型慢变信道下的性能。

Firstly , channel estimation in fixed broadband wireless access systems is discussed . We give their performance comparison of some conventional pilot-symbol-aided channel estimation algorithms in SUI channels which are typically slow fading .

由于国际电信联盟（ITU）采用TD-SCDMA标准作为第三代移动通信的国际三大标准之一，因此以TDD模式工作的SCDMA无线接入系统代表着未来通信技术发展的方向。

Since TD-SCDMA proposal is one of third-generation telecommunication standard in the world , so the SCDMA access system which working at TDD mode represents the future communication business development .

文章介绍了支持宽带无线接入系统的空中接口标准IEEE802.16的制订进程、发展现状和趋势，并重点对标准媒体访问控制（MAC）层和物理层的技术特点进行了分析。

In this paper , the developing process , the state of arts and trend of IEEE standard 802.16 are introduced and emphasis goes to the main technical characteristics of Media Access Control ( MAC ) layer and physical layer .

其次，论文针对固定无线接入系统的六种SUI测试信道模型，给出一种便于工程实现的基于模型匹配判决的信道估计算法。

Secondly , for the SUI testing channel models of fixed broadband wireless access systems , we present a model-based judging method which can make a decision of current channel profile via limited estimated samples .

然后从网络模型、节点模型、MAC层仿真模块以及应用层业务参数、物理层参数五个方面重点介绍了基于OPNET的宽带无线接入系统仿真平台。

Second chapter shows the broadband wireless access system simulator on OPNET . It consists of five parts , network model , node model , MAC Layer simulation module , application parameters and PHY Layer parameters .

SCDMA无线接入系统是一种全新的无线接入系统，它采用智能天线等新技术作为解决上述难题的有效手段。

SCDMA Wireless Access Network , the newborn wireless communication system , uses many up-to-date techniques , such as Smart Antennas , to solve the problem .

传统的NAVTEX无线接入系统采用窄带直接打印（NBDP）的工作方式，功能单一、智能化程度低，已经不能适应现代航运发展的要求了。

The traditional NAVTEX system works by NBDP , which cannot meet the requirements of the modern ocean shipping development .