Digital SNR Adaptation of Analog Radio-over-Fiber Links Carrying up to 1048576-QAM Signals
Di Che
Abstract
Analog radio-over-fiber links have been vulnerable to SNR degradations. We exploit a digital SNR adaptation method by flexibly adjusting the phase modulation index which achieves an SNR range from 29 to 62 dB supporting up to 1048576-QAM signals in a 400G-ZR equivalent coherent system.
Topics & Concepts
Quadrature amplitude modulationQAMComputer scienceModulation (music)Electronic engineeringAnalog transmissionRadio over fiberDigital radioAdaptation (eye)Signal-to-noise ratio (imaging)TelecommunicationsOptical fiberAnalog signalBit error rateEngineeringDigital signal processingPhysicsDecoding methodsAcousticsOpticsAdvanced Photonic Communication SystemsOptical Network TechnologiesAdvanced Fiber Laser Technologies