hallo How can I generate a gaussian noise with : variance = SF/(2*EbN0); SF : spreading factor EbN0 : Eb/N0 Thanks a lot maca
generation of AWGN
Started by ●August 20, 2003
Reply by ●August 20, 20032003-08-20
On 20 Aug 2003, maca wrote:> hallo > > How can I generate a gaussian noise with : > > variance = SF/(2*EbN0); > > SF : spreading factor > EbN0 : Eb/N0 > > Thanks a lot > macadepends on what you have available. what do you have available? -- The most rigorous proofs will be shown by vigorous handwaving. http://www.mit.edu/~kusuma opinion of author is not necessarily of the institute
Reply by ●August 20, 20032003-08-20
Hi Have al look at www.dspguide.com A as far as I remember there is an algorithm for generating gauss-distributed random numbers with a defined mean and deviation in the mathematics chapter. Perhaps that helps. Christian maca wrote:> hallo > > How can I generate a gaussian noise with : > > variance = SF/(2*EbN0); > > SF : spreading factor > EbN0 : Eb/N0 > > Thanks a lot > maca
Reply by ●August 21, 20032003-08-21
How can I generate a gaussian noise with : I want to simulate Wcdma, with different processing gain and multiusers: known: SINR = P/(N0 + Interfernce) p = 1 (signal_power, in my case) Interference = (number_users - 1)/PG with PG: processing gain and I set %loop%%%%%%%%% SINR = 0:2:20 for N0 = 10.^(-SINR/10) - (number_users - 1)/PG; % as in the formula) - after generating data, spreading, transmitting I want te generate noise with variance = PG/(2*SINR); I do like this noise = (randn(1,N+ j*randn(1,N))*N0; %generate noise received_data = desired_user + noise + interfernce_other_users but it seems not working wel, And i think that the generation of noise is not good Am write thanks maca