TY - JOUR
T1 - Energy-efficient error coding and transmission for cognitive wireless body area network
T2 - Cognitive Wireless Body Area Network
AU - Ul Hasan, Najam
AU - Ejaz, Waleed
AU - Atiq, Mahin K.
AU - Kim, Hyung Seok
PY - 2017/5/10
Y1 - 2017/5/10
N2 - Wireless body area networks (WBANs) have been developed as human body monitoring systems to predict, diagnose and treat diseases. The two important concerns for WBAN are sensor lifetime and latency. Because the signal transmission in WBAN takes place in or around the human body, the fading and collision of the channel due to other existing wireless devices affect the packet error rate significantly. Hence, the lifetime and latency of the sensor are crucial. To mitigate these problems, a cognitive radio (CR) based WBAN can be a promising solution. In this paper, a cognitive forward error control mechanism for CR-based WBAN has been presented. Several issues in CR-based networks have been addressed so far to cope with energy and latency issues. However, the error control mechanism has not been investigated for CR networks. Furthermore, existing studies of the error control mechanism for wireless sensor networks cannot be applied to the CR network because of the opportunistic spectrum access mechanism (i.e. the intermittent availability of spectrum resources). The method presented in this paper adaptively selects the number of hops to the sink and adjusts the redundancy to minimize the expected latency and energy consumption. The mathematical analysis and numerical comparison show that the proposed method achieves better performance in terms of latency and energy efficiency in the multihop CR sensor network.
AB - Wireless body area networks (WBANs) have been developed as human body monitoring systems to predict, diagnose and treat diseases. The two important concerns for WBAN are sensor lifetime and latency. Because the signal transmission in WBAN takes place in or around the human body, the fading and collision of the channel due to other existing wireless devices affect the packet error rate significantly. Hence, the lifetime and latency of the sensor are crucial. To mitigate these problems, a cognitive radio (CR) based WBAN can be a promising solution. In this paper, a cognitive forward error control mechanism for CR-based WBAN has been presented. Several issues in CR-based networks have been addressed so far to cope with energy and latency issues. However, the error control mechanism has not been investigated for CR networks. Furthermore, existing studies of the error control mechanism for wireless sensor networks cannot be applied to the CR network because of the opportunistic spectrum access mechanism (i.e. the intermittent availability of spectrum resources). The method presented in this paper adaptively selects the number of hops to the sink and adjusts the redundancy to minimize the expected latency and energy consumption. The mathematical analysis and numerical comparison show that the proposed method achieves better performance in terms of latency and energy efficiency in the multihop CR sensor network.
KW - cognitive radio
KW - error control
KW - wireless body are network
UR - https://www.mendeley.com/catalogue/f9c8d61f-46a2-3555-a1d1-fb245eab04c7/
U2 - 10.1002/dac.2985
DO - 10.1002/dac.2985
M3 - Article
SN - 1074-5351
VL - 30
SP - e2985
JO - International Journal of Communication Systems
JF - International Journal of Communication Systems
IS - 7
ER -