Digital Double-Sideband Frequency Translation for Transmission of RF MIMO Signals Over Fiber
IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS(2023)
摘要
In this letter, we demonstrate digitization, digital frequency translation, and predistortion compensation using an analog-to-digital converter (ADC) and digital-to-analog converter (DAC) for transmitting analog radio frequency (RF) multiple-input-multiple-output (MIMO) signals over a single fiber without wavelength-division multiplexing (WDM). This technique allows more flexible signal manipulation than the previous purely analog implementations. With the digital predistortion compensation for a Mach-Zehnder modulator (MZM), a 6-dB reduction in the intermodulation distortion is achieved for a 10-km RF over fiber link.
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关键词
MIMO communication, Wireless communication, Radio frequency, Amplitude modulation, Predistortion, Frequency division multiplexing, Wavelength division multiplexing, Digital signal processing (DSP), multiple-input-multiple-output (MIMO), predistortion compensation, radio-over-fiber (RoF)
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