DSP
in [Hardware]
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Fixed point DSP hello all, I am new in dsp programing and i an using fixed point DSP, as i read FIxed point arithmatic it seems to be confusing so plz suggest any link or document having good practical explaination of the topic, or plz give some examples for understanding, Thanks in Advance, Rahul. ... 11 Jul 2008 01:45
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802.16e-2005 has different Rx SNR for OFDM and OFDMA Hi, in 802.16e-2005, table 266 is Rx SNR for OFDM and table 338 is Rx SNR for OFDMA. I find that the Rx SNR is different for OFDM and OFDMA, why is that? ... 21 Jul 2008 05:51
Frequency mismatch from mixer Hello, all, I am doing BPSK in FPGA. My IF is 20MHz and a DDS is used to tune the signal to baseband. My DDS resolution is 10 Hz. Because the DDS frequency did not perfectly match the IF, I saw 3 Hz wave along the signal, and costas loop doesn't like it. Is there any way to eliminate this low frequency compo... 11 Jul 2008 08:54
Phase differense Hello, I am new to DSP and would appreciate some help. Suppose there is a signal that is composed of two components. The first component is a sine wave with the frequency f1 = 30Hz -> y1(t) = sin(2*Pi*30*t + phi_1). The second component is frequency-modulated signal with center frequency f = 10000Hz. The frequenc... 9 Jul 2008 22:58
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Attempting DSP in Scilab -- filtering using convol() I'm attempting to use convol() to implement a simple filter. Scilab's Help entry is terse to say the least. I suspect I should be using the overlap and add variant, but Scilab gives no example. I've experimented and wrote the following code. Calculating the convolution by both methods. The results can only b... 9 Jul 2008 15:46
decreasing signal power..does it mean.increasing noise power hi all, i am carrying out a small test in where i need to introduce 1 db of noise. Since i don't have any noise generator can i decrease the input signal by 1 db.Is it equivalent to injecting noise of 1 db? I am doing the test in awgn channel. Does it also hold good for multipath channel models? Thanks ... 9 Jul 2008 09:34
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decreasing signal power..does it mean.increasing noise power hi all, i am carrying out a small test in where i need to introduce 1 db of noise. Since i don't have any noise generator can i decrease the input signal by 1 db.Is it equivalent to injecting noise of 1 db? I am doing the test in awgn channel. Does it also hold good for multipath channel models? Thanks ... 9 Jul 2008 12:40 |