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Blind Joint Polarization Demultiplexing and IQ Imbalance Compensation for M-QAM Coherent Optical Communications
摘要： A novel joint polarization demultiplexing and IQ imbalance compensation scheme for coherent optical communications that uses global update is proposed and analyzed through numerical simulations. We describe the system model and derive its related equations. Next, we formulate our blind M -QAM arbitrary approach based on EASI algorithm and using the second order statistics of the observed signals. A comparison of the proposed joint method with the traditional CMA for polarization demultiplexing followed by BASS for IQ imbalance compensation is also reported. Evaluated metrics (EVM, MSE, BER) demonstrate its effectiveness compared with CMA cascaded with BASS algorithm.
关键词： CMA,Joint algorithm,BER,IQ imbalance compensation,MSE,EVM,Optical communications,Polarization demultiplexing
更新于2025-09-23 15:21:01
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[IEEE 2018 IEEE 7th International Conference on Photonics (ICP) - Kuah (2018.4.9-2018.4.11)] 2018 IEEE 7th International Conference on Photonics (ICP) - OFDM Transmission in A Converged 60 GHz MMW RoF over OFDM-PON
摘要： The effect of the optical fiber transmission link on 60GHz OFDM signal in a converged 60 GHz Radio over Fiber and OFDM-PON is investigated. In order to achieve an acceptable performance of the received 60GHz OFDM signal in the OFDM-PON network architecture, a standardized EVM range (2-5%) for most of the modern wireless systems that utilize OFDM waveforms must be implemented. The performance of the converged 60GHz RoF over OFDM-PON achieved a better constellation diagram for the received OFDM signal with optimum RF power of 6dBm thus providing the target range EVM measurement.
关键词： RoF,60GHz Millimetre wave band,EVM,RF drive power,OFDM-PON
更新于2025-09-04 15:30:14