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Effect of IQ Mismatch Compensation in an Optical Coherent OFDM Receiver

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3 Author(s)
Hwan Seok Chung ; Electron. & Telecommun. Res. Inst., Daejeon, South Korea ; Sun Hyok Chang ; Kwangjoon Kim

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.

Published in:

Photonics Technology Letters, IEEE  (Volume:22 ,  Issue: 5 )

Date of Publication:

March1, 2010

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