Hi,
I want to double check that if the default value of fft_length for the ofdm is
512 ?
Thanks
Chin-Ya
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Dear all,
I made some modification for gnuradio-examples/python/ofdm
I got some problem when correctly the code after the meeting.
I try to construct an array for arity for some future proposes.
If there is 6 channels, and we want to put 16 qam to each, my idea is
arity[0]=arity[1]=...=arity[15]
Hey,
Does gnuradio implement any MAC layer thinngs, otherwise how the ofdm send and
receive packets?
Thanks
Chin-Ya
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Hey,
I trace the files which control benchmark_ofdm_tx/rx.py.
Initially, I thought gnuradio-core/src/python/gnuradio/blks2impl/ofdm.py is
loaded. However,
it seems not after I did some simple test. I saw benchmark_ofdm_tx/rx.py import
blks2 to control the parameter parser ( blks2.ofdm_mod.add_op
Hey,
I add two parameters in gnuradio-core/python/ofdm.py
expert.add_option("","--onoff",type ="intx", default = 0,
help="set the number of use
multi_constellation decision [defalut=%default]")
for (i = 0 ; ihttp://lists.gnu.
> Message: 6
> The OFDM system uses fft_length number of subcarriers and
> occupied_tones
> number of used subcarriers. The used subcarriers are mapped to the
> middle of the fft_length subcarriers leaving the same number of
> guardband subcarriers on either side. The middle two subcarriers are
I am not sure the fine gr_complex to xxx is the same as the gr_complex which I
found in the ofdm_mapper_bcv.cc "const std::vector &constellation"
I thought they are different, aren't they?
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h
Hi,
I use an array to implement supporting multi-constellation scheme for OFDM
system, but
I got a problem in modifying the code for /trunk/
gnuradio-core/src/python/gnuradio/blks2impl/ofdm.py
in which I generate a parameter multi_modulation[i][j]
while i is the ith subcarrier, and j is the us
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
Hey,
I am working for the ofdm code. I saw ofdm.py. It implements the OFDM
modulation and demodulation, but it seems not mention the number of channels.
How many channels are we used for the odfm ? Is it a fixed value?
Can I control the number of channels and put different constellation scheme fo
Hi,
I want to implement a code to make different subcarrier use different
modulation schemes. What is the first step I can start? Does anyone have
comments? Thanks
Chin-Ya
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rch 31, 2008 10:54 am
Subject: Re: [Discuss-gnuradio] OFDM Updates
To: CHIN-YA HUANG <[EMAIL PROTECTED]>
Cc: discuss-gnuradio@gnu.org
> I wonder if you are told several more times that it is already
> released
> in an svn branch if you will finally look to see how to get it?
>
&g
to modify it.
Chin-Ya
- Original Message -
From: Bob McGwier <[EMAIL PROTECTED]>
Date: Monday, March 31, 2008 11:54 pm
Subject: Re: [Discuss-gnuradio] OFDM Updates
To: CHIN-YA HUANG <[EMAIL PROTECTED]>
Cc: discuss-gnuradio@gnu.org
> I wonder if you are told several more
Hi Tom,
Would you mind release your modified code for me as reference first? Thanks
Chin-Ya
- Original Message -
From: Tom Rondeau <[EMAIL PROTECTED]>
Date: Wednesday, March 26, 2008 9:50 am
Subject: Re: [Discuss-gnuradio] OFDM Updates
To: CHIN-YA HUANG <[EMAIL PROTECTED]>
Tom,
For the message 3, you mention that QAM 16 works well, but QAM64 does not.
Is it still be the problem of receiver or anything else like the old message
about synchronization, interference, or frequency offset related issue ?
Chin-Ya
>
> --
>
> Message: 3
Hello Tom,
Based on your information below I know the problem will be receiver. However,
if I want to solve the receiver's problem. Where is the starting point you
suggestion? From the gnu-radio core part?
Chin-Ya
From: Tom Rondeau
Subject:[Discuss-gnuradio] OFDM Updates
Date: Thu
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