Design and Performance Analysis of a Multiuser OFDM Based Differential Chaos Shift Keying Communicat
QAM (Quadrature Amplitude Modulation)
QAM (quadrature amplitude modulation) is a method of combining two amplitude-modulated (AM) signals into a single channel, thereby doubling the effective bandwidth. QAM is used with pulse amplitude modulation (PAM) in digital systems, especially in wireless applications. In this project we are going to implement M-array QAM modulator, here M being 16. This paper is a demonstration of complete system generator based design of 16-QAM transmitter which can be easily implemented. Each of the possible symbols is a combination of a real and a complex value and can be plotted as a point in the complex plane. Performance in the sense we are going to analyze about eye diagram of our proposed modulation technique and also going to estimate BER. Each point represents one of the M possible symbols. Simulation can be done in MATLAB software.
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