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Technology Stocks : Qualcomm Moderated Thread - please read rules before posting

QCOM 161.39

-1.9%

3:59 PM EST

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To: Clarksterh who wrote (54127)	8/4/2006 10:54:58 AM
From: engineer	Read Replies (7) of 197225

Not true. WCDMA requires about 3.2x more basestations than CDMA and GSM. This was why there was so much hoopla over the rollout of WCDMA a couple of years ago and why so much BS was being thrown around. With CDMA you have a synchronous pilot carrier which allows the mobile to KNOW where the next BTS is even if the signal is way down in the noise. And since each BTS is just a timing offset away from the next one, you can easily find it from your present timing to a certain degree of accuaracy. Hence, CDMA2000 can hand off in low signal level events without dropping a call. WCDMA decided (one of those bonehead moves to avoid a patent) to use Asynchronous Cell site timing, which means every BTS has it's own timing. The designers figured that putting a $5k GPS timing box in each BTS was too expensive, so they just left it out. Due to this, when it comes time to hand off, the handset cannot just "know" where the next BTS is and has to search a signal which may be way down in the MUD and many times it dropped the calls. Due to this, the WCDMA systems then had to overcome this by increasing the cell density to improve the Eb/No ratio. Like 3 dB. Then QCOM figured out how to make it happen with signal processing and starts delivering chipsets that actually work after many in EU could not make it happen. You saw lots of delays and BS flying around in 2002 and 2003 about not the right time, etc. At that time there was 3 flavors of BTS around and certain WCDMA chipsets only worked on one flavor. QCOM chipsets worked on all of them. At the same time, the EU boys were promting GPRS and trying to flood video out over the already overloaded GSM channels. They got this going and managed to hoodwink the EU carriers one more time into deploying lots of micro BTS to increase the coverage (er I mean the CAPACITY...just a little white lie slip of the tounge). All of the sudden WCDMA seemed to work better and the EU boys could finally deliver those leading edge radios they designed. Along comes Zyray and MIMO and produces a chipset which actually gets back 2.5 dB and WCDMA can work lots of other places now wihtout the $1B of extra BTS units. So BRCM buys ZYRAY and decides to enter the 3G fray. QCOM says "pay me a license" and BRCM says NO. Hence every good ole boy jumps on the bandwagon for patent litigation and tries to get it thru. But you and everyone else can try to rewrite it in terms of what was done in the PR sheets. Just not the real story..

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