The large attenuation coupled with the noise generated by electric appliances provides challenges in enabling multimedia communications over in-home powerlines. HomePlug AV uses a windowed OFDM-based physical layer with modulations of up to 1024 QAM, bit loading, turbo convolutional code and channel adaptation with the ac line cycle to operate close to the channel capacity. HomePlug AV MAC uses several features like two-level MAC framing, beacon period synchronized with ac line cycle, dynamic TDMA allocations, and persistent/non-persistent schedules to maximize the PHY layer throughput while providing QoS guarantees for multimedia application. All these features enable HomePlug AV to harness the full potential of powerline channel.

1. Minkyu Lee, Richard E. Newman, Haniph. A. Latchman, Srinivas Katar, Larry Yonge: “HomePlug 1.0 Powerline Communication LANs — Protocol Description and Performance Results,” Special Issue of the International Journal On Communication Systems On Powerline Communications, April 2003, vol. 16, issue 5, pp. 447-473.

2. HomePlug Powerline Alliance, www.homeplug.org.

3. Katar, S., R. Newman, H. Latchman, and L. Yonge, “Efficient Framing and ARQ for High-Speed PLC Systems,” proceedings of International Symposium On Powerline Communications (ISPLC 2005), Vancouver, BC, 2005, pp. 27-31.

4. Srinivas Katar, Manjunath Krishnam, Brent Mashburn, Kaywan Afkhamie, Richard Newman, Haniph Latchman, “Beacon Schedule Persistence to Mitigate Beacon Loss in HomePlug AV Networks,” Proceedings of International Symposium On Power-line Communications and its Applications, Orlando, Fla., 2006, pp. 184-188.

5. Newman R., S. Gavette, L. Yonge, and R. Anderson, “Protecting Domestic Powerline Communications,” Symposium On Usability in Privacy and Security proceedings, Pittsburgh, Pa., July 12-14, 2006.

Srinivas Katar is a principal research and development engineer at Intellon Corp., Ocala, Fla., where he leads the development and standardization of MAC protocols for use on powerline channels. During this tenure at Intellon, Katar was instrumental in development of two generations of HomePlug Standards, HomePlug 1.0 and HomePlug AV. Katar obtained his Bachelor of Technology degree from Indian Institute of Technology, Kanpur, India. He received his M.S. and Ph.D. degrees from University of Florida. He has published 12 papers in peer-reviewed journals and conferences and has more than 10 patent filings

Manjunath Krishnam is a senior R&D engineer at Intellon Corp. He received a B.E. degree in Electronics and Communications from R.V. College of Engineering, Bangalore University, Bangalore, India, in 1996 and M.S. and Ph.D. degrees from Arizona State University, Tempe, Ariz., both in Electrical Engineering in 1999 and 2004, respectively. Krishnam's research interests are network protocols, resource management and network performance analysis.

Richard E. Newman is an assistant professor of Computer & Information Science & Engineering at the University of Florida, Gainesville, Fla. He earned his Ph. D. in Computer Science from the University of Rochester in 1986. His research is in distributed systems, computer networking and security, including industry- and government-sponsored projects.

Haniph A. Latchman is professor of electrical and computer engineering at the University of Florida, Gainesville, Fla. He received his Ph.D. from Oxford University in 1986. Latchman is a Rhodes Scholar and a senior member of the IEEE and has published more than 115 technical journal articles and conference proceedings. He has received numerous teaching and research awards. He is the author of Computer Communication Networks and the Internet published by McGraw Hill and Linear Control Systems — A First Course published by John Wiley.

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