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Energy Efficient Power Back-Off Management for VDSL2 Transmission
FTW, Österrike.ORCID-id: 0000-0002-0562-2082
FTW, Österrike.
FTW, Österrike.
2009 (engelsk)Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

Recently energy saving has become an important issue also for wired communication. In this paper we investigate the potential of using power back-off (PBO) as a means to achieve higher energy efficiency. Based on a global energy optimisation formulation we derive an energy efficient PBO (EEPBO) algorithm. Through simulation we compare EEPBO with continuous bit-loading to the near-optimal energy efficient spectrum balancing (EESB) algorithm and an integer bit-loading version of EEPBO with energy efficient iterative spectrum balancing (EEISB). By restricting the search to practical levels of PBO parameters instead of optimizing the bit-loading on each and every carrier separately we see a significant reduction in computational complexity. It also means that EEPBO is already supported by current VDSL2 systems. Still, even after restricting the spectrum to what the PBO in VDSL2 allows we can show, through simulations, that EEPBO achieves the same level of energy efficiency as the near-optimal methods. This high performance and low-complexity together with standard compliance makes EEPBO a very attractive choice for future energy efficient transmission in VDSL2. © EURASIP, 2009.

sted, utgiver, år, opplag, sider
2009. s. 2097-2101
Emneord [en]
Bit-loading, Energy efficient, Future energies, Global energy, Low-complexity, Optimisations, Wired communication
HSV kategori
Identifikatorer
URN: urn:nbn:se:hh:diva-21181ISBN: 2-s2.0-84863732124 OAI: oai:DiVA.org:hh-21181DiVA, id: diva2:588895
Konferanse
17th European Signal Processing Conference (EUSIPCO 2009), Glasgow, UK, August 24-28, 2009
Tilgjengelig fra: 2013-01-16 Laget: 2013-01-16 Sist oppdatert: 2013-02-26bibliografisk kontrollert

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