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James Peroulas james at peroulas.com> Date: Mon, 27 Aug 2012 12:27:21 +0200 > From: Christian Buchner <christian.buchner at 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