Biomedical Engineering Reference
In-Depth Information
Fig. 2 a
Scenario for in-body (
orange link
,
dashed circle
and
line
) and on-body (
green links
,
solid
circles
and
lines
with
filled arrows
) wireless communications.
b
Scenario for on-body (
green links
)
and off-body (
blue links
,
solid squares
and
lines
with
empty arrows
) wireless communication. Here,
the devices in
blue
operate as coordinators
in [
10
], therein limited to military applications), or to an external communication
infrastructure of the surrounding environment (not shown). In Fig.
2
b, central
nodes and their off-body wireless links are represented by the blue spots, while
on-body sensors and their on-body wireless links are in green.
Preliminary Feasibility Analysis of 60-Ghz System-on-a-Chip
Transceivers for Wireless Body-Centric Networks
In this Section we report the link budget analyses for 60-GHz wireless transceivers
for wireless body-centric communications (see Fig.
2
), compliant to the millimeter-
wave High Rate Wireless Personal Area Networks standard IEEE 802.15.3c-2009
[
27
]. The results of the link budget analyses are exploited to carry out some prelim-
inary evaluations on the feasibility of SoC transceivers by taking into account the
capabilities and limitations of the modern nano-scale CMOS technologies and the
latest advances in wearable textile antennas.
The IEEE 802.15 WPAN Task Group 3c (TG3c) [
27
] provides a reference for
systems operating in the RF spectrum 57-66 GHz in United States (57-64 GHz),
Canada (57-64 GHz), Australia (59.4-62.9 GHz), and Europe (57-66 GHz). This
standard specifies that the RF spectrum 57-66 GHz is divided in four channels of
2.16 GHz, as shown in Table
1
(not available in all countries, depending on the RF
spectrum allocation for 60 GHz unlicensed wireless communication by the regulatory
agencies).
The standard supports a variety of modulation and coding schemes, that support
up to 5 Gb/s. For the high-data rate physical layer (HRP), the modulation parameters
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