08-11-2012, 03:37 PM
SIMULATION OF BINARY PHASE SHIFT KEYING
SIMULATION OF BINARY PHASE SHIFT KEYING.docx (Size: 15.96 KB / Downloads: 23)
APPARATUS REQUIRED:
1. Personal computer
2. MATLAB software
THEORY:
BPSK is a method for modulating a binary signal into a complex waveform by shifting the phase of the complex signal. In digit BPSK the symbols of 1 are modulated to the complex numbers exp(-jt) respectively where ‘t’ is fixed angle,if t=0 ,so that the number are just,s-1.
ALGORITHM:
1. Generate the input stream randomly(total number of bits =10)
2. Generate PSK waveform, if ‘1’ is transmitted then z=[z,y] and if ’0’ is transmitted the z=[z-y] plot the PSK waveform
3. Add additive while Gaussian noise (AWGN) to the transmitted signal.
4. Decode the signal from the noise and plot the decoded waveform
INFERENCE:
There are two possible wave phase. So BPSK is sometimes called in phase modulation BPSK signals undergo inter channel interference and inter symbol interference and channel interference and inter symbol interference. It can be overcomes by using differential phase shift keying