Title: Greening the copper access network with dynamic spectrum management

Authors: John M. Cioffi, Hao Zou, Aakanksha Chowdhery, Sumanth Jagannathan, Wooyul Lee

Addresses: Department of Electrical Engineering, Stanford University, Stanford, CA 94305, USA. ' Department of Electrical Engineering, Stanford University, Stanford, CA 94305, USA. ' Department of Electrical Engineering, Stanford University, Stanford, CA 94305, USA. ' BroadCom Corporation, Sunnyvale, CA 94086, USA. ' ASSIA Inc., Redwood City, CA 94065, USA

Abstract: This paper investigates the benefits of dynamic spectrum management (DSM) in terms of reducing the power consumption and improving the data rates and robustness in digital subscriber line (DSL) networks. Non-DSM solutions cause strong interference in a shared DSL binder and lead to instability in the network. However, DSM mitigates such interference, stabilises DSL service, and saves power consumed by the DSL networks. This paper compares the savings in power and the improvement in data rates and robustness of the DSL networks when the proposed DSM methods are used instead of other non-DSM techniques. The power savings, data rate increase and quality-of-service improvement by DSM make the operation of DSL networks greener and more efficient, which in turn reduces operational expenditure and brings higher customer satisfaction for DSL service providers.

Keywords: DSM; dynamic spectrum management; spectrum balancing; power savings; power consumption; digital subscriber lines; DSL networks; copper access networks; green networks; network efficiency; data rate increase; quality of service; QoS.

DOI: 10.1504/IJAACS.2010.035545

International Journal of Autonomous and Adaptive Communications Systems, 2010 Vol.3 No.4, pp.369 - 395

Published online: 30 Sep 2010 *

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