Subscribe here to receive similar articles over e-mail whenever Krishna Pillai publishes an article on his site. The article compares various digital modulation schemes like BPSK, QPSK, PAM, 16PSK, ...

Abstract: Transmitting high capacity under low SNR conditions is increasingly a challenge in many wireless and free-space communications applications. E.g. in free space optical satellite links ...

MATLAB PCM System Simulator demonstrating digital signal processing fundamentals. Features sampling, quantization (uniform/μ-law), multiple encoding schemes, and signal reconstruction. Includes ...

Information is carried by changing the phase of the carrier. ->BPSK (Binary PSK): Uses two phases (0° and 180°). Very robust, but only 1 bit per symbol. ->QPSK (Quadrature PSK): Uses four phases (0°, ...