Title Realizing the Gbps DSL (GDSL) through Dynamic Spectrum Management and Vectored DSL
Speaker Dr. Ardavan Maleki Tehrani
Day and Time Tuesday, May 29, 2007 11:00 AM
Location EOW 430, Engineering Office Wing, University of Victoria
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Organizers IEEE Victoria Section
Contact Amirali Baniasadi
Abstract
In this talk we will discuss the Digital Subscriber Line (DSL) data-rate increases possible with the Dynamic Spectrum Management (DSM). We will discuss some of the DSM techniques such as level 3 Vectoring and level 2 Band Preference. In particular, studies of bounds of spectral balancing find Band Preference as a practical method that provides the highest possible Level 2 performance in bundled or unbundled DSL environments. Investigations of vectoring begin with differential vectoring and show very high DSL data rates. These data rates increase further through the use of full-binder vectoring, leading to projections of feasible DSM vectored implementations of multi-100Mbps DSLs. We will discuss some configurations in which gigabit per second DSL (GDSL) is feasible on lengths of 150 to 300 meters of 4 twisted pair. Basically the full binder capacity of 4 drop wires is examined with 6 dB of margin and the usual 4 dB of coding gain to find that rates that exceed 1 Gbps are possible in a DSL of 300 meters or less.
Biography
Dr. Ardavan Maleki Tehrani is currently a VP at a startup in San Francisco-Bay Area. Since 2004 he has also served as a technology consultant to a number of public and private companies. He has held a variety of technical positions at Atheros Communications, Lucent Technologies, Bell Labs, Stanford Center for Telecommunications (joint project with Royal Institute-KTH in Sweden), Stanford STAR Lab and Stanford Information Systems Lab. He has authored several technical papers, lectured internationally on communications technology and has filed nine US and international patents.
Dr. Tehrani received his B.S. in Electrical Engineering from University of Tehran, and his M.S. and Ph.D. degrees in Electrical Engineering from Stanford University, where he also pursued a masters degree in Management Science and Engineering.