ofdm qam qpsk channel-coding qam-modulation ofdm-wireless-communications qam-demodulation awgn-channel qpsk-modulation multipath-channels constellation-diagram Updated on Jan 2, 2023 MATLAB ...

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An on-off keying (OOK) to quadrature phase shift keying (QPSK) format conversion scheme has been demonstrated in this paper. Two-channel OOK signals are converted into one-channel QPSK signal, and ...

The simulation results indicate that the performance of QPSK modulation advantages over that of 16-Quadrature Amplitude Modulation (16-QAM), and OFDM technology can guarantee the reliable transmission ...

In this paper, the authors are implemented BPSK modulation technique, a subsystem module of digital communication using reversible logic. Later on they have implemented a QPSK modulation technique ...

There are several modern digital modulation techniques that provide increased information capacity, higher data security and quicker system availability with great communication qualities.

Dual polarization quadrature phase shift keying (DP-QPSK) is currently the main modulation format for high-speed optical fiber communications, and its simulation modeling has important implications ...

Here, the authors are proposing the FPGA based QPSK modulator with analog filters, the proposed system has many advantages over traditional QPSK modulators such as reduced cost, better stability ...

Constellation diagrams are commonly used in analyzing the performance of data communications systems using quadrature signal generation techniques such as QPSK. The generation of a constellation ...

To transmit higher data rates, a QPSK modulator capable of transmitting 640 Mb/s on a single carrier with dual polarization is used. Although QPSK modulation is a bandwidth- and power-efficient format ...