TY - JOUR
T1 - A Comprehensive Study of Channel Estimation for WBAN-based Healthcare Systems
T2 - Feasibility of Using Multiband UWB
AU - Islam, S. M.Riazul
AU - Kwak, Kyung Sup
N1 - Funding Information:
Acknowledgement This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MEST) (No. 2010-0018116).
PY - 2012/6/1
Y1 - 2012/6/1
N2 - Wireless personal area network (WPAN) is an emerging in wireless technology for short range indoor and outdoor communication applications. A more specific category of WPAN is the wireless body area network (WBAN) used for health monitoring. On the other hand, multiband orthogonal frequency division multiplexing (MB-OFDM) ultra-wideband (UWB) comes with a number of desirable features at the physical layer for wireless communications, for example, very high data rate. One big challenge in adoption of multiband UWB in WBAN is the fact that channel estimation becomes difficult under the constraint of extremely low transmission power. Moreover, the heterogeneous environment of WBAN causes a dense multipath wireless channel. Therefore, effective channel estimation is required in the receiver of WBAN-based healthcare system that uses multiband UWB. In this paper, we first outline the MB-OFDM UWB system. Then, we present an overview of channel estimation techniques proposed/investigated for multiband UWB communications with emphasis on their strengths and weaknesses. Useful suggestions are given to overcome the weaknesses so that these methods can be particularly useful for WBAN channels. Also, we analyze the comparative performances of the techniques using computer simulation in order to find the energy-efficient channel estimation methods for WBAN-based healthcare systems.
AB - Wireless personal area network (WPAN) is an emerging in wireless technology for short range indoor and outdoor communication applications. A more specific category of WPAN is the wireless body area network (WBAN) used for health monitoring. On the other hand, multiband orthogonal frequency division multiplexing (MB-OFDM) ultra-wideband (UWB) comes with a number of desirable features at the physical layer for wireless communications, for example, very high data rate. One big challenge in adoption of multiband UWB in WBAN is the fact that channel estimation becomes difficult under the constraint of extremely low transmission power. Moreover, the heterogeneous environment of WBAN causes a dense multipath wireless channel. Therefore, effective channel estimation is required in the receiver of WBAN-based healthcare system that uses multiband UWB. In this paper, we first outline the MB-OFDM UWB system. Then, we present an overview of channel estimation techniques proposed/investigated for multiband UWB communications with emphasis on their strengths and weaknesses. Useful suggestions are given to overcome the weaknesses so that these methods can be particularly useful for WBAN channels. Also, we analyze the comparative performances of the techniques using computer simulation in order to find the energy-efficient channel estimation methods for WBAN-based healthcare systems.
KW - Channel estimation
KW - Healthcare
KW - MB-OFDM
KW - Ultra-wideband (UWB)
KW - Wireless body area network (WBAN)
KW - Wireless personal area network (WPAN)
UR - http://www.scopus.com/inward/record.url?scp=84864069204&partnerID=8YFLogxK
U2 - 10.1007/s10916-010-9617-6
DO - 10.1007/s10916-010-9617-6
M3 - Article
C2 - 21046206
AN - SCOPUS:84864069204
VL - 36
SP - 1553
EP - 1567
JO - Journal of Medical Systems
JF - Journal of Medical Systems
SN - 0148-5598
IS - 3
ER -
