Body Area Communications

Body Area Communications

- Channel Modeling, antenna development, communication systems and EMC

The lecture attempts to provide an introductory course for diploma/master/doctoral students who need to know about or intend to be involved with body area communications. It starts with an introduction to basic electromagnetic properties and modeling methods of the human body in various frequency bands that are available for body area communications. Next, the representative analysis techniques for body channel modeling are introduced. Based on the basic knowledge, the lecture will focus on: channel modeling, antenna design and development, communications performance and EM considerations in body are communications.

1.Introduction of body area communications

Definition

Promising wireless BAN applications

Available Frequency Bands (UWB, MICS, ISM, HBC)

Wearable BAN and implant BAN

Standardization

2.Electromagnetic Characteristics of biological tissues

Human Body Composition

Frequency-Dependent Dielectric Properties

Tissue Property Modeling

Penetration Depth versus Frequency

In-Body Absorption Characteristic

3.UWB radio signal in body area communications

Why UWB?

Time-domain properties of UWB signals

Bandwidth property of UWB signals

4.Propagation mechanism in body area

Penetration characteristic

Absorption characteristic

Diffraction  characteristic

5.Body area channel modeling - Path loss model

Free-space path loss

On-body UWB channel characteristics  (path loss, shadow fading, link budget)

In-Body UWB Path Loss

In-Body MICS Band Path Loss

HBC Band Path Loss and Equivalent Circuit Expression

6.Body area channel modeling - Multipath Channel Model

Saleh-Valenzuela Impulse Response Model

On-Body UWB Channel Model

In-Body UWB Channel Model

7.Communication performance for wearable IR-UWB

IR-UWB

RAKE receiver

BER performance, data rate and communication distance

8.Communication performance for implanted IR-UWB

In-body UWB communications

In-body MICS-band communications

9.Antenna design for body area communications - On-body antennas

Antenna fundamentals

Antennas in the vicinity of a human body

On-body antenna designs and applications

10.Antenna design for body area communications - In-body antennas

Antennas inside a human body

In-body antenna designs and applications

 11.Human safety in UWB body area communications

Human safety

SAR analysis (safety guidelines, analysis and assessment methods, transmitting power versus SAR)

12.EMC in UWB body area communications

Cardiac pacemaker model

Electromagnetic field approach

Electric circuit approach

13.Summary

Summary

Survey and future subjects