QPSK

The Quadrature Phase Shift Keying (QPSK) modulation scheme is a digital modulation technique used for data communication. In QPSK, the data is transferred by modulating the phase of the carrier signal. It divides the data into groups of two bits, known as symbols, and each symbol is represented by a specific phase of the carrier signal. This allows for the transmission of two bits per symbol, effectively doubling the data rate compared to binary phase shift keying (BPSKBPSK: The Binary Phase Shift Keying (BPSK) modulation scheme is a type of phase modulation technique where the phase of the carrier signal is altered based on the input data bits. In BPSK, there are two phases, 0 and 180 degrees, representing binary values 0 and 1 respectively. This modulation scheme is…). QPSK is more efficient and less susceptible to noise, making it a preferred choice for high-speed data communication. However, it requires more complex circuitry and precise phase control.