wiki:Hardware/bDomains/aGrid

Version 22 (modified by seskar, 10 years ago) ( diff )

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Grid

Block diagram of the ORBIT Grid domain is shown in Figure 1. It consist of 20 x 20 nodes arranged in the grid (20 rows with 20 nodes each) with spacing of 3 feet.

No image "OG-BD.jpg" attached to Hardware/bDomains/aGrid No image "Grid.jpg" attached to Hardware/bDomains/aGrid
Figure 1: ORBIT GRID

Console, Switches …

Centralized Arbitrary Waveform Injection Subsystem (CAWIS) / Noise Generation

This subsystem consists of arbitrary waveform generator (Agilent ESG) connected through distribution network to four multi-band antennas located in the four corners of the grid. The distribution network enables control over the attenuation of the individual antenna feed. Using CAWIS, users can inject (among other types of waveforms) AWGN signals into the main ORBIT grid and thus create different topologies.

Position of the noise antennas on the big grid

Figure 2: CAWIS
No image "CAWIS-BD.jpg" attached to Hardware/bDomains/aGrid
a.) Block Diagram b.) Noise injection antenna positions

As most of the Orbit services, CAWIS is a web-based service accessible from main grid console through url: http://instrument1.orbit-lab.org:5012/interference. Accessing this url without any other arguments will show it's help page:

Attachments (4)

  • noiseantenna.png (197.6 KB ) - added by Surya Satyavolu 16 years ago.
  • ORBITGridBD.jpg (114.3 KB ) - added by seskar 10 years ago. ORBIT Grid Block Diagram
  • CAWIS.jpg (70.4 KB ) - added by seskar 10 years ago. Interference Injection Subsystem Block Diagram
  • Massive-MIMO.jpg (163.8 KB ) - added by seskar 6 years ago. Massive-MIMO mini-rack

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