By Topic

CMAP: A Real-Time Prototype for Cognitive Medium Access

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

4 Author(s)
Geirhofer, S. ; School of Electrical and Computer Engineering, Cornell University, Ithaca, NY 14853. Email: sg355@cornell.edu ; Sun, J.Z. ; Lang Tong ; Sadler, Brian M.

In this paper we present CMAP, a real-time prototype for Cognitive Medium Access (CMA). We have previously proposed CMA as a protocol that enhances coexistence with a set of independently evolving WLAN bands by constraining collisions. Based on a time-slotted physical layer, the cognitive radio uses a sense-before-transmit strategy to control its medium access. We further employ a model-based design approach to predict the WLAN's transmission behavior and reduce collisions. In this paper we present the implementation of the real-time prototype CMAP. The cognitive radio consists of a high-performance DSP/FPGA board as well as a commercial radio frontend for the 2.4 GHz ISM band. The performance of CMAP shows an excellent fit with analytical and simulation results solidifying our previous work. In addition, we use CMAP to measure its dynamic impact on the WLAN.

Published in:

Military Communications Conference, 2007. MILCOM 2007. IEEE

Date of Conference:

29-31 Oct. 2007