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An Ultra-Wideband Baseband Transmitter
Design for Wireless Body Area Network
R.K. Naga Mahesh, Akash Ganesan, Manchi Pavan Kumar, and Roy P. Paily
Dept of Electrical and Electronics Engineering
Indian Institute of Technology,
Guwahati, Assam - 781039, India
{
r.mahesh,akash.ag,m.pavan,roypaily
}
@iitg.ernet.in
Abstract.
This paper presents a low-power ultra-wideband baseband
transmitter designs for wireless body area networks (WBAN). This is
the first time a baseband architecture for UWB PHY is implemented
according to the standard IEEE 802.15.6. Since WBAN is the network
around the humanbody there are stringent requirements associated with
it such as high security, low power consumption and reliable communica-
tion. To incorporate these features in baseband transmitter, an ecient,
simple BCH encoder is used for random error protection and to com-
bat burst errors an optimum size interleaver is used. A low complexity
transmitter controller and an ecient algorithm for determining the in-
terleaver size has been implemented. Two different architectures have
been implemented in 0.13
μ
m CMOS technology which are operated at
487.5 kHz system clock with 1.08 V supply.
1 Introduction
Wireless body area network (WBAN) is an emerging technology that combines
continuous health care monitoring and consumer electronic applications around
the human body [1],[2]. WBAN consists of small, intelligent devices attached on
or implanted in the body and are capable of establishing a wireless communi-
cation link [3],[4]. Current wireless personal area networks do not support the
combination of reliability, quality of service (QOS), low power, data rate, and
non-interference required to broadly address the breadth of body area network
(BAN) applications[5]. So a separate wireless standard IEEE 802.15 Task Group
6 (IEEE 802.15.6) was exclusively developed for WBAN applications. The stan-
dard defines a Medium Access Control (MAC) layer and several supporting phys-
ical layers (PHYs) to enable body area networks used in, on, or around a body.
The IEEE 802.15.6 specifies a total of three PHYs namely narrowband (NB)
PHY, ultra wideband (UWB) PHY, and human body communication (HBC)
PHY.
The UWB PHY specification is designed to offer robust performance for BANs
and to provide a large scope for implementation opportunities for high perfor-
mance, robustness, low complexity, and ultra low power operation [5]. This phys-
ical layer is targeted at both medical and non-medical applications. For high data
