頁籤選單縮合
題 名 | An Integrated ECG Compression and Error Protection Scheme for Bluetooth Transmission in Home Tele-Care Applications |
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作 者 | Miaou,Shaou-gang; Lin,Zong-hang; | 書刊名 | 醫學工程 |
卷 期 | 16:4 2004.08[民93.08] |
頁 次 | 頁213-223 |
分類號 | 410.1644 |
關鍵詞 | Home tele-care; Bluetooth; ECG; SPIHT; Unequal error protection; Compression; Fading; Wireless LAN; |
語 文 | 英文(English) |
英文摘要 | Recently, using a wireless technology to transmit physiological signals, such as electrocardiogram (ECG), for a home tele-care system has received great attention. Although wireless transmission can provide the mobility advantage, it has to cope with the potential problem in limited bandwidth and induced interference. In this study, we propose an integration design in which a state-of-the-art compression algorithm called SPIHT (set partitioning in hierarchical trees) is combined with an unequal error protection scheme, to solve the problem for the ECG signals transmitted in Bluetooth packets. In this design, part of the SPIHT bit stream behaves like a fragile variable length code and needs a stronger protection with the forward error correction (FEC) code; the rest of the bit stream is lightly protected by the code. The simulation results show that the 2/3-rate FEC code in DM packets works effectively without the proposed scheme when the interference is fairly small. However, with the proposed scheme, the quality of received ECG signals is usually much better than that without the scheme when stronger interferences from fading channels and wireless LAN are encountered in an indoor environment. Consequently, the important features of an ECG waveform, such as P wave, QRS complex, and T wave, could be well preserved at a receiver site with clinically acceptable reconstruction quality. In addition, the data compression method in the proposed scheme can save total transmission power and time, and therefore reduce its potential interferences to other wireless devices. |
本系統中英文摘要資訊取自各篇刊載內容。