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Dave.Dykstra
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re: Trial shows active antenna can raise cell capacity 40%
Dave.Dykstra   1/26/2012 5:53:09 AM
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This is a very interesting result. With the increase in the importance of smartphones and the attendant increased importance to customers of good signal for voice and data transfer, and in view of the existing number of very low signal level areas and dead spots, the need for better coverage, preferably at low cost, becomes increasingly apparent. What would have been an minor inconvenience only a couple of years ago now seems like a major problem to the customer and will need to be resolved soon.

DrQuine
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re: Trial shows active antenna can raise cell capacity 40%
DrQuine   1/23/2012 10:29:21 PM
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Heavy cell phone users are well aware of the "dead spots" in their local area. It would be wonderful if this active technology could build continuous coverage bridges across small dead spot gaps and avoid the need to add additional towers. New towers could be more cost effectively allocated for the larger gaps that can't be bridged by active antennas.



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As data rates begin to move beyond 25 Gbps channels, new problems arise. Getting to 50 Gbps channels might not be possible with the traditional NRZ (2-level) signaling. PAM4 lets data rates double with only a small increase in channel bandwidth by sending two bits per symbol. But, it brings new measurement and analysis problems. Signal integrity sage Ransom Stephens will explain how PAM4 differs from NRZ and what to expect in design, measurement, and signal analysis.

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