Re: [Discuss-gnuradio] ais-tools installation problem

2008-04-21 Thread irene159
Don Ward wrote: > > Try "./configure --help" (in your mysql directory) and see if you have > options like --enable-static, --enable-shared, --disable-static, > and/or --disable-shared. Depending on the defaults, to build a shared > library (a *.dll file on Windows---what you need) you may n

Re: [Discuss-gnuradio] C++ daughterboard code [was MATLAB...]

2008-04-21 Thread Michael Dickens
On Apr 20, 2008, at 11:25 PM, George Nychis wrote: Michael Dickens wrote: I could be talked into doing that. It would benefit my current efforts greatly. Please do send out (to the list, or me specifically) your US$0.02 worth. - MLD Are you still considering doing this? Is anyone out the

[Discuss-gnuradio] usage of multiple endpoints in the receiver

2008-04-21 Thread oscar Isoz
Hello I have a project based on the GNU-radio where I am trying to receive data from two endpoints in the Fx2 chip. It works just fine under Windows but I get error when I do exactly the same thing under Linux. I have tried both to create an additional endpoint and to use the "bulk-read" from Libu

Re: [Discuss-gnuradio] ais-tools installation problem

2008-04-21 Thread Jason
irene159 wrote: Don Ward wrote: Try "./configure --help" (in your mysql directory) and see if you have options like --enable-static, --enable-shared, --disable-static, and/or --disable-shared. Depending on the defaults, to build a shared library (a *.dll file on Windows---what you need) you m

Re: [Discuss-gnuradio] usage of multiple endpoints in the receiver

2008-04-21 Thread Eric Blossom
On Mon, Apr 21, 2008 at 10:09:29AM -0600, oscar Isoz wrote: > Hello > I have a project based on the GNU-radio where I am trying to receive > data from two endpoints in the Fx2 chip. > It works just fine under Windows but I get error when I do exactly the > same thing under Linux. > > I have tried

[Discuss-gnuradio] Problem using Parser

2008-04-21 Thread Ahmet Hasim Gokceoglu
Hi, I am trying to write a code for qpsk receiver and want to get some parameters from the user by using parser. However I get some error when I execute the code #!/usr/bin/env python from gnuradio import gr, gru, eng_notation, optfir, modulation_utils from gnuradio import usrp from gnuradio imp

[Discuss-gnuradio] OFDM serial to parallel mappping

2008-04-21 Thread CHIN-YA HUANG
Hi, Does anyone have clear idea about how gunradio implements serial to parallel mapping since 802.11 has 52 channels? I check the gr_ofdm_mapper_bcv.cc , but still have no idea about it. In further, I want to apply an array mapping to implement that different channels use different constellat

Re: [Discuss-gnuradio] Re: Residual Frequency?

2008-04-21 Thread Wireless Monster
Hi Eric, Thank you for your help. You are right 0.384Hz is nothing to worry about :) I misunderstood the 'm' Regarding the frequency I finally found where the problem comes from: After the gmsk modulation (blks2.gmsk_mod) I have to scale the value (for example by multiplying it by 8000) before s

Re: [Discuss-gnuradio] Re: Residual Frequency?

2008-04-21 Thread Johnathan Corgan
On Mon, Apr 21, 2008 at 2:21 PM, Wireless Monster <[EMAIL PROTECTED]> wrote: > After the gmsk modulation (blks2.gmsk_mod) I have to scale the value (for > example by multiplying it by 8000) before sending it to the USRP to get the > resulting signal centered at the right frequency. If don't do it

Re: [Discuss-gnuradio] Re: Residual Frequency?

2008-04-21 Thread Gregory Maxwell
On Mon, Apr 21, 2008 at 5:21 PM, Wireless Monster <[EMAIL PROTECTED]> wrote: > After the gmsk modulation (blks2.gmsk_mod) I have to scale the value (for > example by multiplying it by 8000) before sending it to the USRP to get the > resulting signal centered at the right frequency. If don't do it t

Re: [Discuss-gnuradio] Re: Residual Frequency?

2008-04-21 Thread Brian Padalino
On Mon, Apr 21, 2008 at 6:16 PM, Johnathan Corgan <[EMAIL PROTECTED]> wrote: > The "full scale" output to the RFX boards is +-32767.0. It is not > recommended that you actually use this, as it will drive the RFX > output stages into a strongly non-linear operating range, increasing > noise and

[Discuss-gnuradio] m-block timeouts, time passed, or pause?

2008-04-21 Thread George Nychis
Is there any way to get an approximate amount of time that has elapsed since a timeout has been scheduled? Or better yet, a way to pause a timer? This is extremely useful for backoff periods in MAC contention protocols. Where, for instance, the timer is only decremented when the channel is c

Re: [Discuss-gnuradio] m-block timeouts, time passed, or pause?

2008-04-21 Thread Eric Blossom
On Mon, Apr 21, 2008 at 10:57:25PM -0400, George Nychis wrote: > Is there any way to get an approximate amount of time that has elapsed > since a timeout has been scheduled? Or better yet, a way to pause a timer? Nope. > This is extremely useful for backoff periods in MAC contention protocols.

Re: [Discuss-gnuradio] m-block timeouts, time passed, or pause?

2008-04-21 Thread George Nychis
Eric Blossom wrote: > How often are you checking for channel idle? Couldn't you just cancel and schedule a new one each time you check for channel idle? A new RSSI value is computed at the host with every new block of samples. It doesn't use the FPGA value. I suppose there is an approx

Re: [Discuss-gnuradio] m-block timeouts, time passed, or pause?

2008-04-21 Thread Eric Blossom
On Mon, Apr 21, 2008 at 11:18:22PM -0400, George Nychis wrote: > > > Eric Blossom wrote: > > How often are you checking for channel idle? Couldn't you just cancel >> and schedule a new one each time you check for channel idle? >> > > A new RSSI value is computed at the host with every new block o

Re: [Discuss-gnuradio] m-block timeouts, time passed, or pause?

2008-04-21 Thread George Nychis
Eric Blossom wrote: > What your asking for would be hard to do using the existing framework. I still don't understand where you want to do this from. That is, which code would be making the determination that it was time to pause or unpause the timer. For instance, a new node enters a bac

Re: [Discuss-gnuradio] Re: Residual Frequency?

2008-04-21 Thread Johnathan Corgan
On Mon, Apr 21, 2008 at 5:06 PM, Brian Padalino <[EMAIL PROTECTED]> wrote: > a) Should the compression of the output stages really affect his > constant envelope GMSK signal? Not directly. However, by operating a normally linear amplifier in gain compression, the third-order mixing products o