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Discussion Groups | DSP & FPGA | AM Transmitter and receiver ....please give your expert opinions

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AM Transmitter and receiver ....please give your expert opinions - aliu...@hotmail.com - Jul 30 8:06:32 2009

I am making an AM transmitter and receiver on SFF SDR Development Platform.
I am using model based approach. I have completed my Upssmpoling model using
System Generator , Now what i understand is to multiply the message signal with
some carrier and then upconvert it and translate it to some IF and send it to
DAC and RF module.These are the problems
1. When i multiply my message signal with a carrier ,i get a lots of images ,and
the filter to remove those has to be very sharp

2. How can i translate my message signal to some higher frequency before doing
upsampling

3. What should be the frequency of my message signal , i am having a 4KHz
signal

4. I need to implement it on the kit using only the FPGA part

P.S: The ADC and DAC are 125 MS/s and 200 MS/s.

Kindly do help :(

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