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Hi everyone,
I'm using Xilinx System Generator, and the situation is:
I'm transmitting a bunch of symbols from a constellation (say 256-QAM), and in the receiver the symbols are , of course, noisy.
To take a decision on the transmitted symbols, I've no better idea that comparing one by one...
I'm currently working on (studying) PLC (Power Line Communications); the objective here is to load the channel up to 30MHz. If this is the BW, my sample rate is at least twice (60 MSPS), but it's preferable 80-90 MSPS.
Thanks in advance for your comments
Re: dB and dBW
Have in mind that:
dBW, dBm: measures Power, Watts --> dBW, dBm
dB: measures ratios (of voltages, of powers, etc), W/W, V/V ---> dB
Regards
Hi, I'm new in DSP, and I would like to know if anyone has ever worked with AD/DA at , let's say, 70-80-90 MSPS, with Texas DSP Kits (TMS320C6000 or another family).
I'm having some headaches trying to find this converters
Any suggestions are welcome,
Thanks
Hi
The digital ICs doesn't really know, the levels are implicit with the circuit behavior. In the case of TTL (a classical family), circuits operate with a 5 volt power supply. A TTL signal is defined as "low" or L when between 0V and 0.8V with respect to the ground terminal, and "high" or H...
parametric sweep option is disabled
I have the same problem. The thing is that you have the version PSPICE A/D "Basics" and this version doesn't include the parametric sweep.
Suggestion: OrCAD 9.2 :wink:
Re: transistors
The transistor used as an amplifier( and in the CE configuration), allows to change the "resistance" in two points (Colector - Emitter), in function to a small signal injected in the Base. In a way, this changes in the signal are "copied" to the resistance variations, and then...
Negative frequency
Think about phasors. In trigonometric Fourier series (an and bn) you don't need negative frequencies because the result is given by a sum of sines and cosines.
In exponential Fourier series(cn) the need for negative frequencies yields from the fact that for describing a real...
1 two kind of resistance: Differential mode: for differential signals
Common Mode: for common signals
OK, but what's diff. or common?
One input is positive( +) and the other is minus ( - ), then
Common signals = [V(+) + V(-)] / 2
Diff. signals = [V(+) -...
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