Silicon Investor (SI) -- The First Internet Community

STOCKTALK

We've detected that you're using an ad content blocking browser plug-in or feature. Ads provide a critical source of revenue to the continued operation of Silicon Investor. We ask that you disable ad blocking while on Silicon Investor in the best interests of our community. If you are not using an ad blocker but are still receiving this message, make sure your browser's tracking protection is set to the 'standard' level.

Technology Stocks : Qualcomm Moderated Thread - please read rules before posting -- Ignore unavailable to you. Want to Upgrade?

To: grinder965 who wrote (21605)	4/20/2002 5:39:33 PM
From: Dennis Roth	Read Replies (2) \| Respond to of 197518

Direct conversion or zero-IF chips for GSM/GPRS are already in currently available devices such as the multiband Sierra Wireless Aircard 750 and the soon to be approved Aircard 710. The 710 is just one step away from final carrier approval from AWE according to Sierra's CC of the 16th. Here are some press releases about design wins for Conexant's Direct Conversion Transceiver for GSM/GPRS. siliconinvestor.com siliconinvestor.com siliconinvestor.com Conexant is not the only company out there with a ZIF design for GSM/GPRS just the only one I could find links for readily. Here's a link to another article about the arduous development of direct-conversion receivers. commsdesign.com From what I've been able to read, the complexity of the algorithms and the computational power required to implement them in ZIF is nearly an order of magnitude higher for EDGE than GSM/GPRS and that for CDMA, whether UMTS or CDMA 1X, it is several times more than for EDGE. Therefore, I am pleased to see that Qualcomm's first foray into ZIF was CDMA and that they have started shipping samples. siliconinvestor.com siliconinvestor.com They have done the more complex and difficult part first, and adding GSM/GPRS to later models should not be as difficult since it is an easier problem to solve and requires less computational power than they have had to already put into the chips to support ZIF CDMA. Those trying to add CDMA to their GSM/GPRS ZIF designs are going to have a very hard time.