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Improvement in the performance of 3G wireless communications systems using an ICA based signal processing block.

机译：使用基于ICA的信号处理模块提高3G无线通信系统的性能。

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摘要

In this thesis, we have implemented a signal processing block in the receiver of a third generation (3G) cellular system to provide improvement in the quality of service. Each block of the cellular system, including the complete transmitter, channel and the receiver is implemented in Matlab. The multiplexing scheme is implemented using wideband code division multiple access (WCDMA). The signal processing block is based on the concept of independent component analysis (ICA), and a rake receiver is used at the receiver to mitigate inter symbol interference due to the multi-paths. The signal processing block (SPB) is further extended to a High Speed Downlink Packet Access System (HSDPA), whose downlink physical layer is implemented in Matlab.;The simulation is run in Matlab for a thousand frames containing different information bits, and under different channel conditions to prove that the system works for all possible case in accordance with a Monte Carlo simulation. Performance analysis is accomplished by calculating the bit error rate between the transmitted and received data. Two different calculations are performed, one with the signal processing block in place and the other without, and a comparison is made using a SNR (signal to noise ratio) vs. BER (bit error rate) plot. Further, to extend the importance of the system to data applications, frame error rate calculation is also carried out, and a similar comparison made.;Finally, we have been able to conclude, that the performance of the 3G wireless system with the signal processing block is better than the one without it. This confirms the earlier results which were proved for second generation systems. [1, 2]
机译：在本文中，我们在第三代（3G）蜂窝系统的接收机中实现了信号处理模块，以提高服务质量。蜂窝系统的每个模块，包括完整的发射机，信道和接收机，均在Matlab中实现。使用宽带码分多址（WCDMA）实现多路复用方案。信号处理模块基于独立分量分析（ICA）的概念，Rake接收机在接收机处使用，以减轻由于多径引起的符号间干扰。信号处理模块（SPB）进一步扩展到高速下行链路分组访问系统（HSDPA），其下行链路物理层在Matlab中实现;在Matlab中对包含不同信息位且在不同条件下的一千帧进行仿真信道条件，以证明该系统根据蒙特卡洛模拟在所有可能的情况下都能正常工作。通过计算发送和接收数据之间的误码率来完成性能分析。进行两种不同的计算，一种在适当的位置处理信号，而另一种不使用，然后使用SNR（信噪比）与BER（误码率）图进行比较。此外，为了将系统的重要性扩展到数据应用，还进行了帧错误率计算，并进行了类似的比较。最后，我们已经能够得出结论，信号处理的3G无线系统的性能阻止比没有阻止更好。这证实了第二代系统已被证明的早期结果。 [1，2]

著录项

  • 作者

    Dsouza, Winston.;

  • 作者单位

    The University of Texas at Arlington.;

  • 授予单位 The University of Texas at Arlington.;
  • 学科 Engineering Electronics and Electrical.
  • 学位 M.S.
  • 年度 2011
  • 页码 101 p.
  • 总页数 101
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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