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Comp.dsp is a worldwide Usenet news group that is used to discuss various aspects of digital signal processing.
There are 38 threads in our archives.
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Re: Loops
lanbaba - 2008-09-18 03:28:00
> taicon wrote:
> > Hi there
> >
> > Can anyone tell me the name (PLL/FLL, order and type) of following
loops,
> > what they can and what they cannot?
> >
> > 1. A closed loop with a p...
extended Hamming code performance
lanbaba - 2008-07-30 04:54:00
Hi there
Does anyone know the code performance (SNR-BER) of the extended Hamming
code (32,26,4) in AWGN channel when using a soft input trellis decoder?
LBB
...Re: BER for M array orthogonal signal
lanbaba - 2007-09-05 09:26:00
> i need help in calculating the number of bit errors made per decision for
> my simulation.
>
> M=8 for my case
>
> For example;
>
> if i send symbol X1, and i receive symbol Y1, no error i...Re: Multicarrier modulation scheme vs FSK
lanbaba - 2007-06-22 07:18:00
> I guess I had a follow-up question to this. I always thought:
> FSK + MCM = OFDM
> However, Now I'm not convinced that to be true.
>
> I have a RF transceiver that support 2-level FSK as the
...Re: my problem is unsolved -- how to estimate bandwidth the fastest way?
lanbaba - 2007-05-29 02:53:00
> Hi all,
>
> My previous problems are still unsolved.
>
> Problem 1:
>
> In order to sample signal x(t), I have to know its bandwidth. How to
> estimate the 99% bandwidth? Need to do this ...Re: MIMO Preamble Design
lanbaba - 2007-05-22 11:05:00
> Usually DFT matrix is a square matrix. But here how am I supposed to
> truncate it?
This is because the channel has less degree of freedom in the time domain
than in the frequency domain, me...Re: SINR estimation in OFDM systems
lanbaba - 2007-05-20 06:05:00
> HI, here
>
> People usually estimate the SINR in the OFDM systems in the following
> way.
> 1. Estimate over each specific pilot subcarrier of different OFDM
> symbols. (i.e. CINR estimation)
...Re: Bandwidth of complex IQ signals
lanbaba - 2007-05-15 14:49:00
> > > "billykao" writes:
> > >
> > > > > On May 14, 8:42 pm, cincy...@gmail.com wrote:
> > > > >
> > > > > > You should be fine, assuming that the signal you sampled is
> > > > > > appropr...Re: Bandwidth spreading
lanbaba - 2007-05-14 10:12:00
> >
> > paulwu wrote:
> > > Is there anyway to spread out a signal into a wider bandwidth. Let's
> say
> > > we have a signal that has a bandwidth of 6MHz, we would like to
spread
> it
> > > ...Re: Does oversampling bring diversity gain?
lanbaba - 2007-05-12 04:19:00
> As oversampling produces several baud rate signal sequences (for example,
> oversampling by a factor of 2 produces two baud rate sequences with an
> offset of half baud duration), could these sequ...