CR-GENI – Why CRKIT Framework ?A. Dutta, D. Saha,, P. Maddala, K. Le, P. Wolniansky, D. Grunwald, I. Seskar

RTS

Bob is unhappy…WHY ?

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

Can we help Bob ? YES !

GENI CRKIT Hardware

Static CRKIT SoC

Focus on Creativity, not Engineering Complexity :

Concentrate on what matters the most : Creativity, Innovations

Split Radio into Static and Dynamic domains : 1. Static - Open-sourced System-on-Chip (complex engineering

problem)2. Dynamic – Swappable Communication APPs (creative

problem)

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

Abstract lower level design complexities from Users

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.

Live system runs

INNOVATION CYCLE

Build Radio

Live Experiments Algorithms + Models

IdeaFeedback

Hi, I am Bob !

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)

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

Focus on APP Development

NOT complete Radio

Dynamic APPs

EXPERIMENTERS WELCOME

Orbit sandbox (SB6) available for experimentation

BASEBAND PROCESSOR

XILINX V5 SXT95

SFP: 3.75 Gbps x 415 Gbps

JTAG

PCIe INTERFACE30 Gbps

GigE INTERFACE1000 Mbps

USB 2.0480 Mbps

LVDS: 622 Mbps x 2012.4 Gbps

WIDEBAND CONVERT

RF POWER AMPS / LNA

ANTENNA SWITCHES

RADIO MODULE: upto 4 channels

DATA CONVERSION

FLEXIBLE TIMING

2.4 GHz IF STAGE

5.2 GHz IF STAGE

GPS or external reference