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Technology Stocks : The *NEW* Frank Coluccio Technology Forum -- Ignore unavailable to you. Want to Upgrade?

To: Frank A. Coluccio who wrote (31399)	9/18/2009 7:53:55 AM
From: Peter Ecclesine	Read Replies (1) \| Respond to of 46821

Hi Frank, >>I've recently heard rumblings concerning femtocells with souped up power ratings.<< Message 25949996 Message 25951517 As engineer points out, for CDMA, the coverage has to be small. For OFDM, you still do not want passersby roaming unnecessarily - think ground-floor condos or apartments. UK's Health Protection Agency this week reaffirmed Wi-Fi radiation is not a health concern hpa.org.uk and cellphone affects on health are continually studied hpa.org.uk Try the Femto Forum and Wikipedia for air interfaces and power management femtoforum.org en.wikipedia.org petere

To: Frank A. Coluccio who wrote (31399)	9/19/2009 9:00:44 AM
From: Peter Ecclesine	Read Replies (1) \| Respond to of 46821

Hi Frank >> I've recently heard rumblings concerning femtocells with souped up power ratings. Four watts, say, as opposed to the customary 1 watt. I presume these are designed to support current 3G and future LTE extensions via FMC (fixed-mobile convergence) either in the home or in similar closed-in environments -- although WiFi and WiMAX are not out of the question here << Some distinctions between picocell and femtocell are outdoor vs indoor, and > 14W operating power vs < 14W operating power (802.3af POE). Saying souped up outdoor femto is saying femto prices for picocell devices. We know it will come, but it is not here now. I misremember cellular base station transmit power limits are 1500 Watts if the antenna is mounted more than 10 ft above the ground, 500 Watts per sector fcc.gov petere