<...Thanks for recalling my positive views on VDSL...>
Hi Bernard-
To be honest, I was more interested in the generic DSL aspect to this BRCM related press. As you know, FTTN will present very costly (in a number of parameters) impediments for the telcos.
<..It's funny that BRCM and TXN are using ISSCC as a backdrop for their battle on QAM versus synchronized DMT for the T1E1 VDSL standard...>
According to some engineers who attended, most of the conference was largely rehash. And there are a lot of standards players in T1E1 for VDSL. From what I hear, I'd be surprised if QAM was involved in any final drafts.
<..Of course, each company is trying to put its best foot forward (BRCM by its emphasis on pure DSP implementations, and TXN with the use of an analog front end)...>
Incremental advances notwithstanding, all DSP solutions have the nagging constraints of price, size, and power/heat. OTOH, I wonder if MOT has suspended their attempt at a single chip ASIC.
<..By the way, although Frank C. on the Last Mile thread seems currently enamored with FTTH..>
Haven't found time to read "Last Mile" for many months, but I respect Frank's opinions. Still, I'm a bit baffled if that "enamoration" had expectations of widespread buildout within the next 8-10 years.
<..I think his earlier thesis that local loop architectures for cable/DSL/wireless would converge is correct. Within this context, because it involves short distances, and offers a very high dedicated capacity, VDSL will be a powerful contender...>
So do you see FDM techniques in wireless radios, or do you see VDSL eventually involving QAMx?
<..The ISSCC had a lot of other good discussions (look at the software
versus hardware debate, and the Klaas Bult talk on the effect of
scaling on analog A/Ds)..>
Did you attend? Any highlights/insights to share?
Regards-
Steve
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