Wireless and Satellite Communications

Digital Modulation, Coding, and Multiple Access Techniques

Digital modulation, coding, and multiple access techniques form the core mechanisms that enable efficient and reliable data transmission in wireless and satellite systems. This track examines key modulation schemes such as PSK, QAM, and OFDM, highlighting their trade-offs in terms of bandwidth efficiency, power efficiency, and robustness to noise. Channel coding techniques, including error detection and correction methods, are discussed to demonstrate how reliability is enhanced over noisy wireless channels.

The track also explores multiple access techniques that allow multiple users to share limited spectral resources. Traditional and advanced schemes such as FDMA, TDMA, CDMA, OFDMA, and NOMA are analyzed in detail. Emphasis is placed on their application in modern cellular and satellite systems. By understanding these techniques, participants gain the tools needed to design high-capacity, spectrally efficient communication systems capable of supporting diverse services and massive connectivity.