首页> 外文期刊>Research journal of applied science, engineering and technology >Weighted Symbol Decision for Transmitted Reference Impulse Radio Ultra-Wideband Receiver by Modifying Hadamard Matrix
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Weighted Symbol Decision for Transmitted Reference Impulse Radio Ultra-Wideband Receiver by Modifying Hadamard Matrix

机译:修改Hadamard矩阵的发射参考脉冲无线超宽带接收机的加权符号决策。

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The UWB technique is employed in this study to exclude unusual multipath components by introducing a modified Hadamard matrix. Within the concept of this approach, IPI is totally removed and the S/N is improved. The successful UWB developments were always challenged by some external factors such as noise, interference and wrong multipath components. The challenges were treated by several researchers and, in many occasions, success was achieved in improving the data rate. The basic objectives of the improvement include removing the inter-pulse interference, distinguishing the wrong multipath components and to achieve high accuracy. Transmitted reference impulse radio ultra-wideband is only one of these techniques where it is aimed to have better detection and estimation. The analogue signals are digitalized -a crucial step that significantly pushed transmitted reference impulse radio ultra-wide to a new frontier. The basic element of this study is to digitalize the output quantities of integrable data by using analogue-to-digital convertor. The other element of this study is to modify the Hadamard matrix in transmitter and receiver to achieve total removal of inter-pulse interference. As a result, the estimation and the decision were enhanced and, on other side, a reduction in signal-to-noise ratio by amount ranges from 7.12% to about 14.42% at the receiver compared to the previous modification (modified hoped single delay). Other achievements were performed by targeting inter-pulse interference total removal and the wrong multipath error was altered which led to high accuracy, better information and less simple error rate.
机译:本研究采用超宽带技术,通过引入改良的Hadamard矩阵来排除异常的多径分量。在此方法的概念范围内,IPI被完全删除,S / N得到改善。 UWB成功的开发总是受到一些外部因素的挑战,例如噪声,干扰和错误的多径组件。几位研究人员解决了这些挑战,并且在许多情况下,在提高数据速率方面都取得了成功。改进的基本目标包括消除脉冲间干扰,区分错误的多径分量并实现高精度。发射参考脉冲无线电超宽带只是旨在更好地进行检测和估计的这些技术之一。模拟信号被数字化-这是至关重要的一步,它极大地推动了超宽传输参考脉冲无线电的发展,并将其推向了一个新的领域。这项研究的基本要素是通过使用模数转换器将可积分数据的输出量数字化。这项研究的另一个要素是修改发射机和接收机中的Hadamard矩阵,以完全消除脉冲间干扰。结果,增强了估计和决策,另一方面,与之前的修改(修改后的希望单次延迟)相比,接收机的信噪比降低了7.12%到14.42%。 。通过以脉冲间干扰的总去除为目标,还取得了其他成就,并且改变了错误的多径误差,从而获得了更高的准确性,更好的信息和更少的简单错误率。

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