支持视频业务的多码DS-UWB系统容量

2005 5th International Conference on Information Communications & Signal Processing Pub Date : 2005-12-06 DOI:10.1109/ICICS.2005.1689164

T. C. Wong, J. Mark, K. Chua

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引用次数: 0

摘要

提出了一种基于误码率规范的多码直接序列超宽带(DS-UWB)视频多类业务中断概率的解析公式。分析框架是为不同流量类别具有不同的可变视频比特率的一般情况而制定的。本文使用的视频模型考虑了场景的变化。在该模型中，每个视频源由一个二维马尔可夫链建模。每个用户使用多个扩展码来实现不同的视频比特率。通过分析，确定了支持视频业务的多码DS-UWB系统的系统容量接收区域。最后给出了进气区域的数值计算结果

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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System Capacity of a Multi-Code DS-UWB System Supporting Video Services

An analytical formulation of the outage probability in terms of bit error rate specification for video multiclass services in a multi-code direct-sequence ultra-wideband (DS-UWB) system is presented. The analytical framework is formulated for the general case in which different traffic classes have different varying video bit rates. The video model used in this paper accounts for scene changes. In the model, each video source is modeled by a two-dimensional Markov chain. Multiple spreading codes are used by each user to achieve the varying video bit rate. The analytical work leads to the determination of the system capacity admission region of a multi-code DS-UWB system supporting video services. Numerical results of the admission regions are also presented

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2005 5th International Conference on Information Communications & Signal Processing

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