Howtosignalprocessing
- What is BPSK waveform?
- What is the working principle of BPSK?
- How is BPSK signal generated?
- What type of message signal is used for generating BPSK signal?
What is BPSK waveform?
Binary Phase Shift Keying BPSK
This is also called as 2-phase PSK or Phase Reversal Keying. In this technique, the sine wave carrier takes two phase reversals such as 0° and 180°. BPSK is basically a Double Side Band Suppressed Carrier DSBSC modulation scheme, for message being the digital information.
What is the working principle of BPSK?
BPSK can be considered as a form of amplitude shift keying where each nonreturn to zero (NRZ) data bit of value 0 is mapped into a −1, and each NRZ 1 is mapped into a + 1. The resulting signal is then passed through a filter to limit its bandwidth and then multiplied by the carrier signal cos ωt (see Figure 4.2).
How is BPSK signal generated?
Convert unipolar to bipolar in the databits. Modulate the bipolar bits with Binary Phase Shift Keying (BPSK). Multiply the baseband BPSK with a carrier fc = 100 Hz. The modulated BPSK signals will be transmitted through a Noiseless channel.
What type of message signal is used for generating BPSK signal?
BPSK signal may be generated by applying carrier signal to a balanced modulator. Here the baseband signal b(t) is applied as a modulating signal to the balanced modulator. A NRZ level encoder converts the binary dta sequence into bipolar NRZ.
