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Author: search.filters.author.Khattiya, WannaritSubject: search.filters.subject.ECC

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    An application of rate-adaptive RS-codes in wireless Body Area Network
    (2015-08-17)
    Khattiya, Wannarit
    ;
    Choomchuay, Somsak
    This paper proposes the preliminary investigation of rate adaptive error correction coding applied to MAC layer of Body Area Network (WBAN). Health monitoring is a crucial part of proactive patient treatment. As a nature to WBAN communication, there appears severe noise level surrounding the human body. The transmission quality is deterred according to the present of noise. The issue can be improved by appending Error Correction Code (ECC) to the communication message. However, such an effort can cause the packet overhead, latency, and more energy consumption. To mitigate these disadvantages, the rate adaptive of ECC is proposed. The Reed-Solomon (RS) code designed in GF256 has been employed in this study. It fits well the maximum MAC length which is 255 bytes. In our investigation, several MIT-BIH Arrhythmia databases are chosen as input data to represent the patient monitoring condition. The Rician fading channel model is involved as its quite nature to WBAN characteristic. The codes performances are measured in Bit Error Rate (BER) and energy consumption unit.
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    Performance evaluation of LDPC codes on patterned WBAN data
    (2015-01-26)
    Sansoda, Buncha
    ;
    Choomchuay, Somak
    ;
    Timakul, Sekson
    ;
    Khattiya, Wannarit
    In this decade, WBAN plays vital role in health care monitoring environment. It has been used more intensively in wider applications. This paper proposes error control coding applied to WBAN. LDPC codes with the block size of 255 bytes are particularly of interest. Patterned information such as MIT-BIH's arrhythmia datasets extracted from Electrocardiography (ECG) of the patients who encountered heart disease. To measure the system performance, random data are also examined. The system was simulated on Rician channel where severe noise are quite nature to WBAN compared to AWGN channel. Rician channel with some K-factors was investigated. The obtained result shows that both patterned data and random data can be recovered well when Eb/N0 equals 3 dB and above. While the code rates were made varied from 0.50 to 0.75, we can obtain the gain of 3 dB, 5 dB, and 6 dB respectively.