IEEE

A 50 Mbps 4/spl times/4 maximum likelihood decoder for multiple-input multiple-output systems with QPSK modulation

Abstract: In this article, we present an efficient approach for the implementation of optimum maximum likelihood decoding of QPSK modulated multiple-input-multiple-output data streams. The proposed ...
Fujitsu

Fujitsu Introduces World's First DP-QPSK LN Modulator for 100Gbps Optical Networks

In recent years, the expansion of new services such as cloud computing and on-line streaming has brought about a dramatic increase in data communications. As the data transmission volume of ...
IEEE

Anti-interference Performance of QPSK Modulation and Demodulation Technology in Mobile Communication with MATLAB Simulation

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 ...
Electronic Design

Novel Low-Cost QPSK Modulator Needs No Adjustments

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 ...
GitHub

Design-and-optimization-of-digital-modulation-technique

This project focuses on the design, simulation, and performance optimization of two key digital modulation techniques — Quadrature Phase Shift Keying (QPSK) and Offset Quadrature Phase Shift Keying ...
Europe PMC

Four-dimensional QPSK modulation transmission scheme based on entropy-coding-aided symbol selection.

We propose a four-dimensional quadrature phase shift keying (4D-SS-QPSK) modulation transmission scheme based on entropy-coding-aided symbol selection. The proposed scheme integrates Huffman coding ...