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Performance of real-time remote control systems in the ISM band.

机译：ISM频段中实时远程控制系统的性能。

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摘要

In remote control applications, a user controls a number of inputs which wirelessly trigger a real-time proportional movement in the controlled object. Such applications are generally referred to as Radio Control (RC) applications. Imperfections in the wireless channel (noise and interference) create a random delay (latency) in the response of the radio control system. A lag occurs when this system latency exceeds a real-time threshold. The System Lag Occurrence Probability (SLOP) is the probability of lag occurrence used to characterize performance of real-time radio control applications. This thesis derives SLOP for a frequency hopping radio control system.;Advanced RC applications use the license-free ISM band for wireless access. Single-chip Commercial-Off-The-Shelf wireless transceivers are used in practice to implement radio control systems operating in the ISM band. ISM transceivers can be classified into five generations depending on the amount of silicon integration available in the transceiver. ISM transceivers offer a variety of techniques to battle noise and interference in the ISM band. Due to hardware limitations found in ISM transceivers, frequency hopping is found to be the only available interference-resistance technique which enables the maximization of interference-resistance in the band.;There are two modes of operation in a frequency hopping system: acquisition and tracking. This thesis studies the effect of using uniform serial acquisition and N-state lock detector tracking on the system latency of a radio control system.
机译：在远程控制应用程序中，用户控制许多输入，这些输入以无线方式触发受控对象中的实时比例运动。此类应用程序通常称为无线电控制（RC）应用程序。无线信道中的瑕疵（噪声和干扰）会在无线电控制系统的响应中产生随机延迟（延迟）。当此系统延迟超过实时阈值时，将发生延迟。系统滞后发生概率（SLOP）是滞后发生的概率，用于表征实时无线电控制应用程序的性能。本文为跳频无线电控制系统推导了SLOP。高级RC应用程序使用免许可证ISM频段进行无线访问。实际上，单芯片商用现货无线收发器用于实现在ISM频段中运行的无线电控制系统。 ISM收发器可根据收发器中可用的硅集成量分为五代。 ISM收发器提供了多种技术来抵抗ISM频带中的噪声和干扰。由于ISM收发器中的硬件限制，跳频被发现是使频段内的抗干扰能力最大化的唯一可用的抗干扰技术;跳频系统有两种工作模式：获取和跟踪。本文研究了使用统一串行采集和N状态锁定检测器跟踪对无线电控制系统的系统延迟的影响。

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  • 作者

    Ismail, Abdallah.;

  • 作者单位

    Carleton University (Canada).;

  • 授予单位 Carleton University (Canada).;
  • 学科 Engineering Computer.;Engineering Electronics and Electrical.
  • 学位 M.A.Sc.
  • 年度 2009
  • 页码 88 p.
  • 总页数 88
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 无线电电子学、电信技术;
  • 关键词

  • 入库时间 2022-08-17 11:38:25

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