Capacity analysis for unlicensed wireless communications

Proceedings of MILCOM '94 Pub Date : 1994-10-02 DOI:10.1109/MILCOM.1994.473983

J. Padgett

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引用次数: 7

Abstract

Most capacity analyses of frequency reuse wireless communication systems assume either fixed channel sets assigned to specific base stations (the traditional cellular model), or some type of dynamic channel assignment (DCA) in a centrally controlled, coordinated system. Such models accurately describe "licensed" systems such as cellular, in which a single system or service provider has exclusive control over a block of spectrum. However, they are inadequate for analysis of systems operating in the "unlicensed" environment, in which multiple systems may share spectrum without any centralized coordination. The model developed is designed for analyzing capacity in such a situation. Cochannel and adjacent-channel interference sources are assumed to be randomly-distributed over area, and possibly on multiple floors for in-building operation. The model is extremely flexible and can be easily adapted to a wide variety of conditions and system configurations. It is intended as an analytical tool, rather than a detailed system simulation, and can be used for fast front-end analysis of system capacity and air interface design tradeoffs. Several example calculations are given and shown to agree well with results of other published studies that use different models.<>

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无牌无线通信容量分析

大多数频率复用无线通信系统的容量分析要么假定将固定信道集分配给特定的基站(传统的蜂窝模型)，要么假定在集中控制的协调系统中采用某种类型的动态信道分配(DCA)。这些模型准确地描述了“许可”系统，如蜂窝，其中单个系统或服务提供商对频谱块具有排他控制权。然而，它们不足以分析在“无许可”环境中运行的系统，在这种环境中，多个系统可以共享频谱而无需进行任何集中协调。所开发的模型是为分析这种情况下的能力而设计的。假设共信道和相邻信道干扰源在区域内随机分布，并且可能在多个楼层内运行。该模型非常灵活，可以很容易地适应各种条件和系统配置。它的目的是作为一个分析工具，而不是详细的系统仿真，并可用于快速前端分析系统容量和空中接口设计权衡。文中给出了几个计算实例，并证明它们与其他使用不同模型的已发表研究的结果吻合得很好。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Proceedings of MILCOM '94

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