The OpenWiFi demo will showcase the initial capability of our full stack real-time Wi-Fi design based on Software Defined Radio (SDR), which is related to the presentation “From laboratory to the field: An open source Software Defined Radio project coupled with native Linux driver framework”.
The demo hardware is composed of Xilinx Zynq 7000 SoC and Analog Devices AD9361 Radio Frequency (RF) front-end. The SoC contains FPGA and ARM cortex A9 processor. 802.11a/g OFDM transceiver, related data/control interface and low level Media Access Control (MAC) are implemented in FPGA. The corresponding driver is implemented under Linux mac80211 framework. The driver, high level MAC/protocol and Linux Operating System (OS) are run on ARM processor. The demo will set up communication with a commercial Wi-Fi device, such as a cell phone or laptop. Traffic, such as ping, video, will run over the Wi-Fi link. On top of this basic standard compliant communication capability, two time slices will be set up across full stack. Different devices/traffics can be grouped into different time slices according to Quality of Service (QoS) requirements.