Danh V Nguyen

US Patent:

20180350149, Dec 6, 2018

Filed:

Dec 1, 2016

Appl. No.:

15/780391

Inventors:

- Philadelphia PA, US
Cem Sahin - Philadelphia PA, US
Logan J. Henderson - Philadelphia PA, US
Danh H. Nguyen - Philadelphia PA, US
James J. Chacko - Huntingdon Valley PA, US
Xaime Rivas Rey - Philadelphia PA, US

Assignee:

Drexel University - Philadelphia PA

International Classification:

G06T 19/00
G06F 3/0484
G01R 29/10
H04B 17/336
H04B 17/345

Abstract:

Presenting a visualization of antenna radiation patterns may include sending a request to a server for up-to-date information regarding an antenna mode; receiving the request at the server and reading a register value for the antenna mode; responding, by the server, with updated antenna mode information; and overlaying antenna radiation patterns on an image based on the mode information.

US Patent:

20160344510, Nov 24, 2016

Filed:

May 29, 2014

Appl. No.:

14/290545

Inventors:

- Philadelphia PA, US
Danh H. Nguyen - Philadelphia PA, US
Cem Sahin - Philadelphia PA, US
Kapil R. Dandekar - Philadelphia PA, US
Nagarajan Kandasamy - Philadelphia PA, US
David J. Dorsey - Wilmington DE, US

International Classification:

H04K 3/00

Abstract:

A real-time capable, protocol-aware, reactive jammer using GNU Radio and the USRP N210 software-defined radio (SDR) platform detects in-flight packets of known wireless standards and reacts to jam them—within 80 ns of detecting the signal. A reactive jamming device is achieved using low-cost, readily available hardware. The real-time reactive jamming device includes a real-time signal detector that detects an event in received packets in the wireless network, a reactive jamming device that sends a triggering signal when the event is detected, and a jamming generator responsive to the triggering signal to generate a jamming signal that has a user-defined delay so as to enable jamming of specific locations in received packets in the wireless network. The effects of three types of jamming on WiFi (802.11g) and mobile WiMAX (802.16e) networks are demonstrated and jamming performances are quantified by measuring the network throughput using the iperf software tool.