Effects of carrier phase estimation on front-end IQ mismatch compensation in mode division multiplexed MIMO coherent receiver |
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| Institution: | 1. Laboratory of Nanophotonic Functional Materials and Devices, School of Information and Optoelectric Science and Engineering, South China Normal University, Guangzhou 510006, China;2. School of Physics and Engineering, Sun Yat-sen University, Guangzhou 510275, China;1. College of Computer Science, Chongqing University, Chongqing 400044, PR China;2. School of Electronic and Information Engineering, Southwest University, Chongqing 400715, PR China;3. College of Computer Science, Chongqing University of Posts and Telecommunications, Chongqing 400065, PR China;1. University of Kragujevac, Faculty of Science, Kragujevac, Serbia;2. City University of Hong Kong, Department of Mechanical and Biomedical Engineering, Kowloon, Hong Kong, China;1. School of Instrument Science and Optic-Electronics Engineering, Hefei University of Technology, Hefei 230009, China;2. Institute of Fiber Optics, Heilongjiang University, 150080 Harbin, China |
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| Abstract: | The effects of carrier phase estimation on IQ mismatch compensation are investigated and compared for coherent MIMO optical receiver. We investigate the impacts of phase IQ mismatch on required optical signal-to-noise ratio (OSNR) for coherent MIMO detection. The impacts of number of modes and analog-to-digital converter (ADC) resolution are also evaluated. The results show that decision-directed carrier phase estimator could compensate significant amount of IQ mismatch without employing additional compensation technique, and relaxes requirement of ADC resolution. |
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| Keywords: | IQ mismatch MIMO MDM Coherent detection |
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