Wireless Local Loops Theory and Applications

The demand for greater flexibility both in bandwidth allocation as well as in geographical terms has opened up the new application area of Wireless Local Loops (WLL). WLL provide a telephone system where subscribers are connected to the Public Switches Telephone Network (PSTN) using radio signals rather than copper wire for part or all of the connection between the subscriber and the switch.

Divided into two parts, theoretical aspects and applications, Wireless Local Loops brings together contributions from leading world experts in this increasingly important section of wireless communication systems.

• Covers all aspects of WLL from design to implementation.

• Explains the theoretical aspects of WLL including areas such as propagation, modulation, coding, channel modelling and also traffic engineering issues.

• Presents the applications areas of WLL including interference, prototype designs of various access protocols, a mobility manager, a remote management systems and the provision of multimedia services.

By providing a self-contained treatment of the progressively important area Wireless Local Loops will have immense appeal to practising engineers, researchers and graduate students needing to understand the bakground to WLL and its major role in the provision of new services.

Table of Contents

Part I: Theoretical aspects.

Introduction to WLL: Digital Service Technologies.

Propogation Models for Wireless Local Loops.

Wireless Local Loop Networks Capacity Enhancement by Space Division Multiple Access.

Combined Trellis Coded Quantization/Modulation over a Wireless Local Loop Environment.

Low Sequency W-CDMA Codes Lead to More Economic WLL and Infostation Terminals.

Wide-band Wireless Outdoor to Indoor Local Loop Channel Models for Urban and Suburban Environments at 2GHz.

Traffic Consideration in Comparing Access Techniques for WLL.

Traffic Based Dynamic Channel Allocation Schemes for WLL.

WLL as an Interferer.

Part II: Applications.

Development of a Prototype of the Broadband Radio Access Integrated Network.

PBX based Mobility Manager for WLL.

Remote Management and Upgrade in a Wireless Local Loop System.

Current and Future Services using Wireless Local Loop (WLL) Systems.

Index.