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From: | Ihab Zine |
Subject: | Re: [Discuss-gnuradio] Microwave Link Demodulation |
Date: | Tue, 30 Aug 2016 11:39:59 +0100 |
Hi Ihab -I recommend checking out this paper on performance counters & ctrlport. The dependency on `thrift` can be a bit painful, but these are great tools in GNU Radio for instrumenting your application and optimizing performance.Cheers,BenOn Mon, Aug 29, 2016 at 12:38 PM, Dave NotTelling <address@hidden> wrote:One way I check for bottlenecks it to run 'top -H' and watch the various threads. If you see any one thread pegged at 100% then it needs to be optimized. At least that's my method :)On Mon, Aug 29, 2016 at 9:46 AM, Ihab Zine <address@hidden> wrote:______________________________Hi Marcus,I have been through the GNU RADIO tutorials , I also dived into adapting gr-dvbt, and it worked for me. But how can i find out where my transceiver BER bottlenecks and where my computational bottlenecks come from? Is the a method or steps i can follow? I need some hints on this.Best RegardsIhabOn 24 August 2016 at 15:12, Ihab Zine <address@hidden> wrote:Hi Ron and Marcus,For frequency higher than 6 Ghz, a down converter can be used to over come this problem.for the data rate and bandwidth, the PC i'm using has the following specifications:Architecture: x86_64CPU op-mode(s): 32-bit, 64-bitByte Order: Little EndianCPU(s): 20On-line CPU(s) list: 0-19Thread(s) per core: 2Core(s) per socket: 10Socket(s): 1NUMA node(s): 1Vendor ID: GenuineIntelCPU family: 6Model: 63Model name: Intel(R) Xeon(R) CPU E5-2660 v3 @ 2.60GHzStepping: 2CPU MHz: 1553.804CPU max MHz: 3300.0000CPU min MHz: 1200.0000BogoMIPS: 5197.32Virtualization: VT-xL1d cache: 32KL1i cache: 32KL2 cache: 256KL3 cache: 25600KNUMA node0 CPU(s): 0-19I think it can handle this rate. Please correct me if i'm Wrong.i have other questions:
- There are (synchronizers, equalizers, channel codes etc) blocks in the gr-dvbt project why I cant use them?
- when you mentioned channel coding do you mean that i need to create a new one? and Why would I need it?
- If i need BCH performance Why is difficult to achieve?
- if the data requirement is fine (CPU and etc), what is the best way to start building the receiver? How can I figure out the blocks That i need for this receiver?
RegardsIhabOn 23 August 2016 at 14:34, Ihab Zine <address@hidden> wrote:Hi Ron,1) Frequency range: 1.5 - 38 GHz
2) Bandwidth range : 2 - 56 MHz
3) Modulation : Qpsk - 256 QAM
4) Data rate range : 150Mbit/s - 326Mbit/s.
5) Error correction method : i thinks it is FEC.IhabOn 22 August 2016 at 12:33, Ihab Zine <address@hidden> wrote:Hi All,I'm working on a project using GnuRadio And USRP 205 mini, i'm at the stage where i need to demodulate a microwave link signal.Anyone has an experience with Microwave link or tried to do something similar? Is it possiable to do it in gnuradio? or is there another approaches to do it?I'd appreciate any information you could give me.ThanksIhab_________________
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