Version 29 (modified by Ilya Chigirev, 10 years ago) ( diff )


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.

ORBIT Grid Block Diagram
Figure 1: ORBIT GRID

Console, Switches …

Arbitrary Waveform Injection / Noise Generation

The Centralized Arbitrary Waveform Injection Subsystem (CAWIS) 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.

Noise Antennas in the Grid

Figure 2: CAWIS
Interference Injection Subsystem Block Diagram
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: As with other aggregate managers, accessing this url without any other arguments will show it's usage 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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