Effect of IQ Mismatch Compensation in an Optical Coherent OFDM Receiver |
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| Authors: | Chung H. S. Chang S. H. Kim K. |
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| Affiliation: | Electronics and Telecommunications Research Institute, Daejeon, Korea; |
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| Abstract: | The performance enhancement using the Gram–Schmidt orthogonalization procedure (GSOP) for compensating transmitter (Tx) and receiver (Rx) in-phase/quadrature (IQ) mismatch in the coherent optical orthogonal frequency-division-multiplexing system is investigated. The analytic result containing frequency offset is presented to describe the different behavior of Tx and Rx IQ mismatch. Bit-error-rate curves measured at back-to-back and 1040-km transmission over single-mode fiber indicate that the GSOP is more efficient to compensate of Rx IQ mismatch than Tx IQ mismatch. |
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