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Opposing views to 3D Beamforming Yin Zhu 20 Feb 2013.

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Presentation on theme: "Opposing views to 3D Beamforming Yin Zhu 20 Feb 2013."— Presentation transcript:

1 Opposing views to 3D Beamforming Yin Zhu yinz@ust.hk 20 Feb 2013

2 Scale  Typical usage of 60GHz: wireless connection between a DVD player and an HDTV.  The distance between racks is much longer. Not many racks can be put inside this area. Is the link quality stable enough?

3 Interference How about from (0,0) to (10,0)? Angle: 10◦

4 Short bursts vs long rotations  “Short bursts” between racks are the whole point of augmenting wireless with the wire.  Rotation delay: 0.01 – 1 second (relatively long, compared to the amount of data to be transmitted)  The experiment is on randomly designed tasks, not the real DC tasks.

5 Restrictions on the # of concurrent connections in one node 8 is the maximum that can be put on a rack.

6 Big flat mirror  How can the mirror be flat without the issue of bent/cuvrature in the presence of gravity?  If the mirror is not perfect (e.g. not flat), the propagation model needs to be redesigned.  Cooling? Putting metal plates on the ceiling may cause severe cooling issues.

7 No space on the ceiling


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