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Alignment of In-phase and Quadrature Data in Quadrature Phase Shift Keying Optical Transmitters
Alignment of In-phase and Quadrature Data in Quadrature Phase Shift Keying Optical Transmitters
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机译:正交相移键控光发射机中的同相和正交数据对准
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摘要
I/Q data skew in a QPSK modulator may be detected by sending identical or complementary data streams to I and Q channel PSK modulators, setting the relative carrier phase between I and Q to zero or π, and monitoring the average QPSK output power, where the data streams sent to the I and Q channels include streams of alternating ones and zeroes.
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