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CR-GENI – Why CRKIT Framework ? - PowerPoint PPT Presentation


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BASEBAND PROCESSOR. RADIO MODULE: upto 4 channels. XILINX V5 SXT95. JTAG. FLEXIBLE TIMING. GPS or external reference. SFP: 3.75 Gbps x 4. 15 Gbps. DATA CONVERSION. PCIe INTERFACE. 30 Gbps. 2.4 GHz IF STAGE. GigE INTERFACE. 1000 Mbps. 5.2 GHz IF STAGE. USB 2.0. 480 Mbps.

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BASEBAND PROCESSOR

RADIO MODULE:

upto 4 channels

XILINX V5 SXT95

JTAG

FLEXIBLE TIMING

GPS or

external reference

SFP: 3.75 Gbps x 4

15 Gbps

DATA CONVERSION

PCIe INTERFACE

30 Gbps

2.4 GHz IF STAGE

GigE INTERFACE

1000 Mbps

5.2 GHz IF STAGE

USB 2.0

480 Mbps

WIDEBAND CONVERT

LVDS: 622 Mbps x 20

12.4 Gbps

RF POWER AMPS

/

LNA

ANTENNA SWITCHES

CR-GENI – Why CRKIT Framework ?

A. Dutta, D. Saha,, P. Maddala, K. Le, P. Wolniansky, D. Grunwald, I. Seskar

RTS

  • Focus on Creativity, not Engineering Complexity :

    • Concentrate on what matters the most : Creativity, Innovations

    • Split Radio into Static and Dynamic domains :

      • Static - Open-sourced System-on-Chip (complex engineering problem)

      • Dynamic – Swappable Communication APPs (creative problem)

    • CRKIT Framework = make real-time and wideband radio a viable solution for large scale experiments.

  • CRKIT Transport Layers

    • ETH : Ethernet physical layer, GbE rate.

    • IP (Fast Path) : HW based implementation, subset of IP/UDP functions. reserved for Data traffic.

    • IP (Slow Path) : SW based implementation, supports TCP/IP. reserved for Control traffic.

    • VRT : VITA Radio Transport Layer (optional)

INNOVATIONCYCLE

Hi, I am Bob !

Feedback

Dynamic APPs

Idea

Focus on APP Development

NOT complete Radio

Algorithms + Models

Live Experiments

  • SoC Features

  • Access to lower level resources thru APIs

  • VITA radio transport protocol for radio control

  • Networking capable node

  • Support up to four different dynamic APPs

  • Library of Open-sourced Communication APPs

  • Implemented in FPGA technologies : Xilinx V5LX50, V5LX110, V5SX95

  • Static Framework utilization level < 25% for V5LX50, < 15% for V5SX95, even less for newer technologies.

  • Transparent to underlying FPGA technology.

  • Can be ported to future HW platforms and newer FPGA technologies.

Static CRKIT SoC

Abstract lower level design complexities from Users

  • Bob is unhappy…WHY ?

    • Requires expertise in : HW, SW, RF, Comm. , Networking…

  • Can we help Bob ? YES !

Build Radio

  • Radio Features

  • Up to four full duplex RF modules

  • Tuning range : 100-7500 MHz

  • 25 MHz baseband

  • 12-bit ADC sampling rate of 64 MSps on I/Q

  • 12-bit DAC update rate of 200MSps

GENI CRKIT Hardware

  • EXPERIMENTERS WELCOME

  • Orbit sandbox (SB6) available for experimentation

Live system runs


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