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A smart two-cell random access algorithm for wireless CDMA communication networks using smart antenna.

机译：使用智能天线的无线CDMA通信网络的智能两小区随机接入算法。

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摘要

Interest in Smart Antenna Technology for wireless communication systems has increased in the recent years as a promising technique to improve the performance of cellular mobile systems. Considerable amount of research is being conducted to improve the performance of the system in terms of increasing the capacity and range. We discuss the different types of Smart Antenna systems using switched beam and adaptive antenna array techniques and describe how they can be used to implement in different multiple access schemes in wireless communications. A smart antenna's ability to simultaneously resolve simultaneous transmissions on the same channel is exploited to help expedite the process of random access. Intended for bursty data traffic, a random access Medium Access Control (MAC) protocol seeks to insure an orderly sequencing of packets from the various mobile stations onto the shared channel with minimum time lost to collisions. When applied to cellular radio systems, a MAC protocol must also cope with the various impairments suffered on the radio link such as multi-path fading, shadowing, and co-channel interference from other mobiles.;This thesis proposes to upgrade the performance of a class of random access protocols for wireless digital networks with smart antennas operating in the presence of Rayleigh slowly fading multipath transmission channels. The capture model assumed is a threshold model based on the signal to noise ratio, while the MAC protocol deployed is the two-cell random access algorithm, in a network environment where nodes are equipped with adaptive array smart antennas. The deployed protocol relies on the ability of the antenna to deploy Direction of Arrival (DoA) algorithms, to identify the direction of transmitters and to subsequently beam-form accordingly for Signal to Interference and Noise Ratio (SINR) maximization. The performance of the protocol is evaluated using analytical modeling as well as detailed simulations in Matlab, where we demonstrate the benefits of using smart antennas.
机译：近年来，作为改善蜂窝移动系统性能的一种有前途的技术，人们对用于无线通信系统的智能天线技术的兴趣日益增加。为了增加容量和范围，正在进行大量研究以改善系统性能。我们讨论了使用开关波束和自适应天线阵列技术的不同类型的智能天线系统，并描述了如何在无线通信中将其用于不同的多址方案中。利用智能天线同时解析同一信道上同时进行的传输的能力，可帮助加快随机访问的过程。为了处理突发数据流量，随机访问介质访问控制（MAC）协议旨在确保从各个移动站到共享信道的数据包有序排序，而将冲突损失的时间降至最低。当用于蜂窝无线电系统时，MAC协议还必须应对无线电链路上遭受的各种损害，例如多径衰落，阴影以及来自其他移动台的同信道干扰。无线数字网络的一类随机访问协议，其中智能天线在存在瑞利缓慢衰落的多径传输信道的情况下运行。在节点配有自适应阵列智能天线的网络环境中，假定的捕获模型是基于信噪比的阈值模型，而部署的MAC协议是两小区随机访问算法。部署的协议依赖于天线部署到达方向（DoA）算法，识别发射器方向并随后相应地波束形成以实现信噪比（SINR）最大化的能力。使用分析模型以及Matlab中的详细仿真来评估协议的性能，在此我们演示使用智能天线的好处。

著录项

  • 作者

    Barkat, Enfel.;

  • 作者单位

    University of Colorado at Denver.;

  • 授予单位 University of Colorado at Denver.;
  • 学科 Engineering Electronics and Electrical.
  • 学位 M.S.
  • 年度 2013
  • 页码 59 p.
  • 总页数 59
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 石油、天然气工业;
  • 关键词

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