Abstract: In the field of modern mobile communication, (Quadrature Phase Shift Keying) QPSK modulation technology is widely used, which has a great advantage that it can work normally in a limited ...

Satellite Uplink and Downlink Simulation is a communication system model developed using MATLAB Simulink. This project simulates the uplink (ground to satellite) and downlink (satellite to ground) ...

Abstract: Multi-input frequency shift keyying can overcome the problem of low band utilization rate in the process of binary frequency shift keyying, and has a wide practical application range. In ...

The modulators are the basic requirement of the communication systems they are designed to reduce the channel distortion & to use in RF communication hence many type of carrier modulation techniques ...

(c) Capacity in bits per second per Hertz vs. Bit to Noise Ratio (Capacity vs Eb/No) (d) Bit Error Rate vs. Bit to Noise Ratio (BER vs Eb/No) Symbol Error Rate vs. Es ...

Digital terrestrial broadcasting systems will use the QPSK-OFDM (Orthogonal Frequency Division Modulation) modulation scheme because of its robustness in mobile environments. This report describes an ...

This paper is the study of the QPSK (Quadrature Phase Shift keying) modulation technique using AWGN (Additive White Gaussian Noise) and Multipath Rayleigh fading channel. In QPSK scheme the authors ...

Optical Communications: 64-QAM classification with neural networks. Investigating the performance of an OFDM-based communication system with QPSK and QAM modulation and effects of AWGN and multi-path ...

Fundamental to all wireless communications is modulation, the process of impressing the data to be transmitted on the radio carrier. Most wireless transmissions today are digital, and with the limited ...

Eliminating software adjustments in circuits based on digital logic improves robustness and reduces cost for small-production-run series. This circuit is a cost-improved version of classical QPSK ...