**[Matlab Question] Converting H(s) to H(z) using derivative approximation?**Hi All,
I been having some issue with my lab work.
I'm supposed to do :
Transfer function H(s):
1
--------------------------------------------
s^4 + 2.613 s^3 + 3.414 s^2 + 2.613 s + 1
Convert H(s) into a digital IIR filterH(z)using the derivative approximation method
for the following three cases: T=0.05, T=0.25 and T=0.5.
The problem is, I unable to use Matlab to convert the transfer function from s to z, when s = (1 - z^-1) / T.
Matlab can only accept variable (z^-1)
Not sure why, and when i see the calculation part, the maths is so ...

**Matlab toolboxes for dvb-h**Hi all, iam happy to be here. I know this site is providing a lot of information for a students like me. Actually iam working on dvb-h simulation but before installing it i would like to know "particularly which matlab tool boxes" are needed by the dvb-h system. Iam wondering about the concerned tool boxes for dvb-h technology physical link layer simulation Waiting for the answer "vasu.kallempudi@gmail.com". Thank u all.
"sreenivasa kallempudi" <kallempudi.vasu@gmail.com> wrote in message <hqqq3h$2f7$1@fred.mathworks.com>...
> Hi all, iam happy t...

**DVB-H FEC decoder question ...**Hello,
I was looking at the DVB-H standard which has a serially concatenated
encoding with Reed Solomon code (RS(204,188, t=8) from RS(255,239, t=8)
) as the outer code and Convolution code (K=7) as the inner code. At
the receiver, I can think of at least four decoding options,
1. Viterbi followed by RS decoder.
2. MAP (BCJR) followed by RS decoder.
3. MAP followed by soft input RS decoder.
4. Having an iterative decoding with MAP and SISO RS as the component
codes.
I need to answer two questions before I select the decoder.
1. Complexity (DVB-H will be sitting in a handheld device which mak...

**Question on Symbol Interleaving in DVB-H**If you are familiar with DVB-T standard, here is an excerpt from DVB-T
standard on symbol interleaving:
The interleaved vector Y = (y0, y1, y2, ...yNmax-1) is defined by:
yH(q) = y'q for even symbols for q = 0, ..., Nmax-1
yq = y'H(q) for odd symbols for q = 0, ..., Nmax-1
where Nmax = 1 512 in the 2K mode and Nmax = 6 048 in the 8K mode.
Do the words "even" and "odd" refer to index locations or they are
referring to the values of symbols (even valued or odd valued)?
Regards,
Sastry
>If you are familiar with DVB-T standard, here is an excerpt from DVB-T
&g...

**MMSE channel estimation in DVB-H ofdm**Hi all!! I am performing LS & MMSE channel estimation in an OFDM syste
with the DVB-H parameters, where the pilots are not equally spaced as th
case with WIMAX. I am facing a severe problem as the BER of both MMSE an
LS are identical. I am sure that the LS is correct and that the problem i
with MMSE. I've tried everything to make a difference between them. Th
only successful attempt was to increase the variance to 100 which i
absolutely wrong as it shouldn't exceed 1. Could the problem be with th
DVB-H parameters or is there something i'm probably performing incorrectly
Plea...

**Question on Symbol Interleaving in DVB-T/H**Hello!
I can not figure out the way, how data symbols are mapped onto carrier
after interleaving.
In the clause 4.3.4.2 symbol interleaving is defined with permutatio
function H(q). For even symbols yH(q) = y'q, q = 0..1512 (2K mode). Th
very first sentence of the clause says:
The purpose of the symbol interleaver is to map v bit words onto the 1 51
(2K mode) or 6 048 (8K mode) active carriers per OFDM symbol.
Later, it the Annex C there is a table of interleaving example. My poin
is that permutation finction itself does not profide information, require
to perform mapping of symbols on...

**A few questions on MPE-FEC and outer interleaver in DVB-H.**Hello, there
I am studying DVB-H and have these questions. Hope any of you could
throw some light on them.
1) If MPE-FEC is used, the receiver would need two RS decoders,
RS1(255,191,64) and RS2(204, 188). The result of RS1 is scrambled
and fed to RS2. Is my understanding right?
2) With Time Slicing. how is boundary of two adjacent bursts is treated
in the outer-interleaver? Will the data at the boundaries of two bursts get
mixed up? One receiver only takes one of the burst. how can it sort out
the interfering data from adjacent bursts?
I didn't find any clause in EN.301.192 indicating...

**A few questions on MPE-FEC and outer interleaver in DVB-H. #2**Hello, there
I am studying DVB-H and have these questions. Hope any of you could
throw some light on them.
1) If MPE-FEC is used, the receiver would need two RS decoders,
RS1(255,191,64) and RS2(204, 188). The result of RS1 is scrambled
and fed to RS2. Is my understanding right?
2) With Time Slicing. how is boundary of two adjacent bursts is treated
in the outer-interleaver? Will the data at the boundaries of two bursts get
mixed up? One receiver only takes one of the burst. how can it sort out
the interfering data from adjacent bursts?
I didn't find any clause in EN.301.192 indicating...

**Source code for DVB-T/H/S2, matlab and C**I am studying DVB-T/H/S2 standard, I would like to get source code
for the standard codec, both matlab and C. Who can help me ?
...