Date: Mon, 27 Aug 2012 12:27:21 +0200 From: Christian Buchner christian.buchner@gmail.com

For some reason, your CellSearch software worked the second time I ran it. Here's the result for a scan in Munich. The two frequencies found correspond to the operators O2 and Vodafone. Deutsche Telekom is either not using the 800 MHz band here, or I happen to be out of the reception range for this dongle.

Detected the following cells: C: CP type ; P: PHICH duration ; PR: PHICH resource type CID fc foff RXPWR C nRB P PR CrystalCorrectionFactor 449 796M -13.2k -47.7 N 50 N one 0.99998344473785039099 372 806M -13.2k -43.7 N 50 N one 0.99998362964129883235

I see that the received signal power is very low at -44dB, so it kind of makes sense that these cells would not be detected every time you run the program. I suspect that if you moved outdoors or used a tuned LTE antenna, these cells would be detectable more reliably.

This software project is way cool! I am surprised how precise my crystal is.

Now who's willing to extend the code to combine several dongles to scan the full 10 MHz band and to analyze the allocated resources signalled on the PDCCH so we can generate statistics on cell load and number of UEs served?

Wow, I think that would be a major undertaking for these dongles! I think that's a task best suited for the USRP and the OpenLTE project :)

JP