一种新的UMTS系统码分配方案

IEEE 54th Vehicular Technology Conference. VTC Fall 2001. Proceedings (Cat. No.01CH37211) Pub Date : 2001-10-07 DOI:10.1109/VTC.2001.956909

T. Al-Meshhadany, K. A. Agha

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引用次数: 5

摘要

第三代无线通信系统基于CDMA接入技术。在这种技术中，所有用户同时共享相同的带宽，但使用不同的编码。当使用弱代码分配算法时，这种共享会产生干扰，从而降低系统的容量。我们分析了WCDMA容量作为分配码的类型和数量的函数。我们还研究了为用户分配代码的方法。最后，我们提出了一种根据用户应用类型进行编码分配的新方案。并给出了仿真模型和结果。

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A new code allocation scheme for UMTS system

Third generation wireless system is based on the CDMA access technique. In this technique, all users share the same bandwidth simultaneously but with different codes. This sharing generates interference that can reduce the system's capacity when using a weak code allocation algorithm. We analyze the WCDMA capacity as a function of the type and the number of allocated codes. We also study the method used to assign codes to the users. Finally we propose a new scheme that assigns the code allocation according to the type of user application. Simulation model and results are also provided.

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IEEE 54th Vehicular Technology Conference. VTC Fall 2001. Proceedings (Cat. No.01CH37211)

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