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Hi community,
I have generated colored Noise with power spectral density N(f) which is the function of frequency. The generated colored noise extends until the samplting frequency. So, the noise power is NOISE_POWER_FS = N(f)*fs. However, to calculate the signal to noise ratio, I need the noise...
Hi all,
I am trying to implement channel estimation using LS estimators for poweline. However, my channel estimation is based on preambles. On the TX side, based on the standard I have preamble transmitted on 36 subcarriers (out of total 128 subcarriers). I have 8 such OFDM symbols which makes...
Hi all,
How does noise affect the PSD of a received signal.
y = x + n
PSD(y) = PSD(x) + PSD(n)
So, the PSD of received signal is higher in all frequencies as compared to the transmitted signal.
So, if my understanding is correct, if at a particular frequency PSD(x) = -10 dB and white noise PSD...
I agree with David...however, in reality (fading channels, coding included and different modulation), the number of bits M on the receiver side is not the same as the transmited ones. So, to calculate the bits M, on the receiver side we can use
M = log2(1 + SNR), where
SNR is the Signal to Noise...
Hi Community,
I am trying to calculate the capacity of AWGN channel (y = hx + n). I was using the shannon formula C = 0.5log2(1+SNR) where SNR = sigma^2(Tx Signal)/sigma^2(Noise). However, I am wondering how can I calculate the channel capacity for M-PSK constellation. For example QPSK and...
Hi folks,
I am trying to implement alamouti receiver,
r1 = h1 x1 + h2 x2 + n1
r2 = -h1 x2* + h 2x1* + n2
My channel is AWGN....what would be the coefficients h1 and h2 for the AWGN channel?
In general I am asking for the channel impulse response of AWGN.
Max
Hi all,
I have to design the transmission chain for single and multiple receive antennas in an AWGN channel and later calculate the BER. The carrier frequency is 3.8 Ghz, data rate 50 kbps and QPSK modulation is used. Can anyone tell me the steps on how to get started in MATLAB for this task...
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