Generation and Detection of BPSK Signal - Block Diagram | New Topic
In this note, we are going to learn about Generation and Detection of BPSK Signal. Welcome to Diploma to Degree, an ultimate solution for diploma and degree engineering notes.
Author Name: Arun Paul.
What is BPSK Modulation Technique?
BPSK Modulation (Binary Phase Shift Keying) is a simple and extensively used digital modulation technique. It is a type of Phase Shift Keying (PSK) that uses two distinct phase states (typically 0° and 180°) to encode binary bits.
- Bit 0 → phase 0°
- Bit 1 → phase 180°
This means that the carrier signal's phase is modified in response to the digital data stream, with one bit transmitted every symbol.
Generation and Detection of BPSK Signal
Block Diagram of BPSK Transmitter (Generation of BPSK)
The BPSK transmitter consists of a level encoder and a product modulator. The transmitter receives a binary wave that consists of a series of bits (0s and 1s). The level encoder converts these binary bits into bipolar signals, representing '1' as +1 and '0' as -1. The conversion is required for phase modulation. The encoded signal is subsequently passed to the product modulator. The product modulator combines the encoded binary signal with a high-frequency carrier signal, ϕ1(t). The equation for ϕ1(t) is shown in the graphic below.
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