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Low-pass lattice filter problem [2 articles]

Hi there. I have been set a homework question for my university module in DSP, and it is driving me mad! I don't have a great understanding of DSP at the moment and was looking for some guidance. ...

Journals - more rip-offs [4 articles]

http://asp.eurasipjournals.com/about/apcfaq/why Open access publishing is not without costs. SpringerOpen defrays these costs through article-processing charges because it does not have subscript...

Reconstruction of min-phase system from non-uniform phase samples [6 articles]

Hi Guys I have the following problem. I am trying to reconstruct the magnitude/phase of an unknown continuous-time (S-domain) minimum-phase system based on samples of the phase. The problem is...

Simple SDR project [6 articles]

I unearthed recently an old Spartan 3ADSP1800 board that I bought and immediate forgot about some 3 years ago. It seems to me to be ideally setup for HF ham band reception only SDR. It has an LTC ...

A very important question about symbol rate [4 articles]

(1) Can someone please let me know which clock determines the symbol rate at the transmitter? For example, in linear modulations we say \sum a(k).p(t-kT), so which physical clock determines this T? Is...

I/Q demodulation of bpsk signal [8 articles]

Hi all: Assuming x(t) is a BPSK modulated signal centered at f0, I split it into two parts, one is multiplied with cos(2*pi*fc*t), pass through LPF and A/D, that became digitized In-phase, I(n). An...

Modulation capacity -- 2MSK [2 articles]

I'm thinking about the following: We know that BPSK has a mutual-information capacity around 0 dB (some say, 0.2 dB by a different argument, but it's close), and that this is ... most would calcu...

Frequency Resolution of Chirp Z Trans. vs DFT [2 articles]

If someone is well versed in the Chirp Z transform, could you help me out a little. Im a little confused about the freq. resolution one can attain using the CZT on a contour on the unit circle....

Floating Point DSP from Microchip (?) [28 articles]

Hi, I would like to select a Floating Point DSP. I was looking-up the Microchip website and I see things like: "Support for Floating Point" and "Floating Point Library" I get a feel...

Fine frequency offset estimation [58 articles]

Hi, I am working on a QPSK receiver (20 Mbps) for short packet reception and based on a preamble. In a first step I use a CW preamble for timing and coarse frequency acquisition, and with a differ...