Talk given at the Telecom New Zealand Innovation sy more
Talk given at the Telecom New Zealand Innovation symposium - 20090609-10
Today FTTH, whether delivered through PON or via PtP, is seen as the end game for fixed broadband access. Nonetheless the majority of current BB access users are still connected via the old telephony copper twisted pairs, and the CAPEX involved in digging the last mile is pushing the date of that end game further and further into the future. This has been happening through the DSL evolution from ISDN to VDSL2 over the past 20 years, and through the promise of crosstalk management and cancellation more recently. That promise, which borrows from coding, modulation and (cross-layer) optimization theory has resulted in a rich research field. In this talk, these efforts (including ours) to improve the performance, including power consumption, will be discussed and held against the light of current deployment and regulatory constraints. less
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