Performance Evaluation of NOMA Systems
Calculation of Bit Error Rate (BER) of Orthogonal Frequency Division Multiplexing (OFDM) through MATLAB
Design a basic OFDM system utilizing an IFFT as the OFDM modulator and an FFT as the OFDM demodulator. I am showing you a figure by which we can under the basic fundamentals of OFDM. OFDM Modulation with IFFT Step-1 Firstly, define the number of bits. it will be in the power of 2. which means the QAM signal's length is also a power of 2. The ifft and fft functions are significantly faster for signals of certain lengths, including those whose length is a power of 2. Syntax- numBits = 32768; Step-2 Define the modulation order Syntax- modOrder = 16; % for 16-QAM Step-3 Generate the random signal Syntax- srcBits = randi([0,1],numBits,1); Step-4 Modulate the Signal (Here we are doing QAM Modulation) Syntax- qamModOut = qammod(srcBits,modOrder, "InputType" , "bit" , "UnitAveragePower" ,true); Step-5 Calculate the Inverse Fast Fourier Transform (IFFT) of the 16-QAM signal. Syntax- ofdmModOut = ifft(qamModOut) Addition of No...
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