国产bbaaaaa片,成年美女黄网站色视频免费,成年黄大片,а天堂中文最新一区二区三区,成人精品视频一区二区三区尤物

首頁> 外文學位 >An ECG Pre-Processing Algorithm for Reliable Transmission and Recovery Over an AWGN Channel
【24h】

An ECG Pre-Processing Algorithm for Reliable Transmission and Recovery Over an AWGN Channel

機譯：用于在AWGN信道上可靠傳輸和恢復的ECG預處理算法

獲取原文
獲取原文并翻譯 | 示例
  • 摘要
  • 著錄項
  • 相似文獻
  • 相關主題

摘要

The history of telecardiology dates back to early 1960 when Electrocardiogram (ECG) was delivered via telecommunication transmission lines. Recent advances in wireless telecardiology have brought ease of access, efficiency, remote monitoring, improvement in patient's quality of life and significant reduction in health care costs. The transmission of ECG over wireless communication channel introduces several challenges compared to standard wireline monitoring of cardiovascular activity. In this work, a pre-processing algorithm is presented for reliable recovery of ECG signal corrupted by additive white Gaussian noise (AWGN) even at very low signal-to-noise ratio (SNR) conditions. At low SNR conditions, interference of noise corrupts the ECG signal to such an extent that the received ECG signals when compared to the original signals show unreliable results. The proposed method involves removal of redundancy in the original signal by a two-step approach: transform based compression using orthogonal wavelet basis function followed by entropy encoding. This is to increase the compression ratio but not at the expense of the quality of the reconstructed signal. This is important to preserve the content of clinical information. The aim of the proposed algorithm is to improve the fidelity of the received ECG signal for accurate clinical interpretation. It is done by using data segmentation, data encoding, reassembly, features detection and signal reconstruction. These steps ensure that the diagnostically critical P-wave, QRS complex and T-wave are kept free of large reconstruction errors. The obtained results are evaluated in terms of compression ratio and PRMSD which are around 2.55:1 and 39.62% respectively at 3dB SNR. The visual perception of the reconstructed ECG signal also shows high quality signal recovery.
機譯：心電圖病的歷史可以追溯到1960年初，當時通過電波傳輸線傳送了心電圖（ECG）。無線心電學的最新進展已帶來了便捷的訪問，效率，遠程監(jiān)控，改善了患者的生活質量并顯著降低了醫(yī)療保健成本。與標準有線監(jiān)測心血管活動相比，通過無線通信信道進行ECG傳輸帶來了許多挑戰(zhàn)。在這項工作中，提出了一種預處理算法，即使在極低的信噪比（SNR）條件下，也能可靠地恢復因加性高斯白噪聲（AWGN）損壞的ECG信號。在低SNR條件下，噪聲干擾會使ECG信號損壞到一定程度，以致與原始信號相比，接收到的ECG信號顯示出不可靠的結果。所提出的方法涉及通過兩步方法消除原始信號中的冗余：使用正交小波基函數的基于變換的壓縮，然后進行熵編碼。這是為了增加壓縮率，但不以重建信號的質量為代價。這對于保留臨床信息的內容很重要。提出算法的目的是為了提高接收到的ECG信號的保真度，以進行準確的臨床解釋。通過使用數據分段，數據編碼，重組，特征檢測和信號重建來完成。這些步驟可確保對診斷至關重要的P波，QRS復波和T波保持無較大重建誤差。根據壓縮比和PRMSD（在3dB SNR時分別約為2.55：1和39.62％）評估獲得的結果。重建的ECG信號的視覺效果也顯示出高質量的信號恢復。

著錄項

  • 作者

    Abdullah, Syed Muhammad.;

  • 作者單位

    The University of Texas at Dallas.;

  • 授予單位 The University of Texas at Dallas.;
  • 學科 Electrical engineering.;Health care management.;Biomedical engineering.
  • 學位 Ph.D.
  • 年度 2017
  • 頁碼 123 p.
  • 總頁數 123
  • 原文格式 PDF
  • 正文語種 eng
  • 中圖分類 康復醫(yī)學;
  • 關鍵詞

相似文獻

  • 外文文獻
  • 中文文獻
  • 專利
獲取原文

客服郵箱：kefu@zhangqiaokeyan.com

京公網安備：11010802029741號 ICP備案號：京ICP備15016152號-6 六維聯(lián)合信息科技 (北京) 有限公司?版權所有

  • 客服微信

  • 服務號