Four-phase phase shift keying (QPSK) circuit structure is ... recovery ring can be used to achieve all the digital circuit, the circuit will be greatly simplified. 3.1. The Principle and Simulation of ...

In another study, modulation format conversion between 16-PSK and 8-PSK was achieved in an elastic optical network using a highly nonlinear fibre platform, which significantly enhanced spectral ...

Digital modulation methods, including Amplitude Shift Keying (ASK), Frequency Shift Keying (FSK), and Phase Shift Keying (PSK), play a pivotal role ... key modulation techniques and demonstrates their ...

Towards providing a solution to this problem, we introduce a variable-rate (VR) M-PSK modulation scheme, for communications over fading channels, in the absence of channel gain estimation at the ...

It focuses on PSK‐modulated waveforms and the description of constant amplitude modulations that involving continues‐phase frequency modulation (CPFM) and frequency shift keying (FSK). Specific ...

Uses high sampling rate (e.g., 44.1 kHz) for digital accuracy. Manages data for all AM variants. Executes modulation, demodulation, noise addition, and spectrum computation. Dynamically updates ...

Key Laboratory of Ministry of Education of Design and Electromagnetic Compatibility of High Speed Electronic System, Shanghai Jiao Tong University, 200240 Shanghai, China ...

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