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 ...
This project implements a fully digital system on an FPGA to convert an 8-bit parallel data input into a QPSK (Quadrature Phase-Shift Keying) modulated baseband signal. The system is designed as a ...
Free Space Optics is the technology which implies the line-of-sight link for the transfer of data between two distant points. The beam of light is used to provide optical connection that can transmit ...
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 ...
Abstract: In the rapidly evolving landscape of modern communication systems, the demand for high-speed, reliable, and efficient data transmission has never been greater. This paper compares ...
Fig 1. A DP-QPSK transmitter and a coherent receiver with ADC and DSP are key analog components for long-distance transmission systems. Fig 2. Shown is the measured (blue, green) and simulated (red) ...
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