Ericsson set to demo 42 Mbps end-to-end HSPA Evolution technology

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Pratik @ Mar 27th 2008 10:59PM

All you need is a better path loss to the serving antenna and a 64QAM user device is no different to a 16 QAM device further away from the serving antenna. I actually work in the industry and have a PhD in WCDMA radio resource scheduling too. I didn't see the need to mention it earlier, but I actually have done my schooling.

Neutral

yoyodude64 @ Mar 27th 2008 11:37PM

Pratic + evengrift = nerd battle!!!!
haha. but seriously. in the end its not always about blazing fast speed. feasibility and price is also a factor in adoption. No i have no idea what differentiates QAM from GMS or CDMA but i know that if they are the only company pushing it, there is no competition to push prices down, and there is no reason to bring it to the market to the first place if only one manufacturer is gonna support it.
and if QAM is more common than i understand it to be...let me know.

Neutral

evengrift @ Mar 28th 2008 12:36AM

Is that actually a defense for 64QAM? Doesn't sound like one, sounds more like an argument FOR FM.

Neutral

Pratik @ Mar 28th 2008 1:04AM

Simply put, this piece of news is of interest to those cellular network operators in the world who currently operate WCDMA networks or those who are thinking of installing one, not those who are interested in other technologies.

evengrift, there's an engadget article from yesterday announcing EDGE Evolution from Nokia Siemens Networks : http://www.engadgetmobile.com/2008/03/27/nokia-siemens-rolling-out-edge-evolution-for-double-the-speed-in/
You won't find me on that post denouncing the technology because the rest of the world has moved on. I'm sure the incremental improvement being offered will be of value to some operators.

Coming back to this story, higher order modulation like 64QAM, when combined with 2x2 MIMO, helps reduce the gap between the spectral efficiency of HSDPA and LTE systems. It is an incremental improvement which is of significant importance to those network operators who do not yet want to invest the financial resources required to roll out a new LTE network right now, or those who simply cannot afford to swap out their WCDMA network for LTE for many years to come.

If you see this announcement from Ericsson in the right light, it actually makes a lot of sense.

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