Perkins Coie LLP
Quadrature amplitude modulation (QAM) vector signal generation by external modulator
An optical signal transmitter produces optical signals comprising QAM modulated vector signals generated using a single external electro-optical modulator operated in conjunction with a wavelength selective switch. The transmission processing achieves adaptive photonic frequency multiplication and comprises QAM modulated signals with high order constellations such as 8-QAM, 16-QAM, and 64-QAM.
ZTE Corporation
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Jianjun Xinying
Yu Li