Wireless Lecture 7

Which of the following technologies is not part of what this team developed?

• Electrocardiography (ECG)

• Machine Learning

• Radars

• WiFi

Which of the following is not a possible application of what the team worked on?

• Monitoring the vital signs (e.g. heart rate) of a person

• Monitoring the breathing of a baby

• Monitoring the emotions of a person

• Monitoring a person's ideas

What is special about the technology this team developed?

• It mostly uses readily available WiFi devices

• It can detect if a person is in a room or not, and then adjust the heating and cooling of the room

• It uses very expensive electronics

• It uses infra-red technology

The possibility of detecting humans and objects is a new technology that was never developed before.

• True

• False

Wireless research carried out at universities and research centers has the possibility to be turned into a profitable business.

• True

• False

The proposed technology uses a clever trick to cancel out some reflections. This trick is based on...

• Using multiple transmitters

• Using multiple receivers

• Using advanced DSP algorithms

• Hoping that reflections would cancel out on their own through destructive interference from one another

The team used a technique to detect if a person is moving behind a wall. This technique is also use in maritime surveillance and is called

• Electrocardiography

• Digital signal processing

• Inverse synthetic aperture radar

• Electroencephalography

When testing their system on the same person, it could accurately measure the emotions of that person ______ of the time.

• 91%

• 87%

• 33%

• 52%

In the early stages of developing their system, the researchers found out that the reflections from a person behind a wall was _______________ than those from the wall itself.

• stronger

• much weaker

• much stronger

• weaker

In the proposed technology, it is clear that _________ the number of antennas provides a higher accuracy.

• decreasing

• increasing

• optimizing