Frequency and Phase Estimation for Coherent QPSK Transmission With Unlocked DFB Lasers

Hoffmann S, Bhandare S, Pfau T, Adamczyk O, Wördehoff C, Peveling R, Porrmann M, Noe R (2008)
IEEE Photonics Technology Letters 20(18): 1569-1571.

Journal Article | Published | English

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This letter presents a hardware-efficient frequency estimator and an advanced phase estimation algorithm capable of tracking the phase noise of a 10-GBaud optical quadrature phase-shift-keying transmission system with standard distributed-feedback lasers in the presence of a frequency mismatch up to 1.2 GHz. This algorithm allows us to implement a digital coherent receiver without an analog frequency control circuit.
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Hoffmann S, Bhandare S, Pfau T, et al. Frequency and Phase Estimation for Coherent QPSK Transmission With Unlocked DFB Lasers. IEEE Photonics Technology Letters. 2008;20(18):1569-1571.
Hoffmann, S., Bhandare, S., Pfau, T., Adamczyk, O., Wördehoff, C., Peveling, R., Porrmann, M., et al. (2008). Frequency and Phase Estimation for Coherent QPSK Transmission With Unlocked DFB Lasers. IEEE Photonics Technology Letters, 20(18), 1569-1571.
Hoffmann, S., Bhandare, S., Pfau, T., Adamczyk, O., Wördehoff, C., Peveling, R., Porrmann, M., and Noe, R. (2008). Frequency and Phase Estimation for Coherent QPSK Transmission With Unlocked DFB Lasers. IEEE Photonics Technology Letters 20, 1569-1571.
Hoffmann, S., et al., 2008. Frequency and Phase Estimation for Coherent QPSK Transmission With Unlocked DFB Lasers. IEEE Photonics Technology Letters, 20(18), p 1569-1571.
S. Hoffmann, et al., “Frequency and Phase Estimation for Coherent QPSK Transmission With Unlocked DFB Lasers”, IEEE Photonics Technology Letters, vol. 20, 2008, pp. 1569-1571.
Hoffmann, S., Bhandare, S., Pfau, T., Adamczyk, O., Wördehoff, C., Peveling, R., Porrmann, M., Noe, R.: Frequency and Phase Estimation for Coherent QPSK Transmission With Unlocked DFB Lasers. IEEE Photonics Technology Letters. 20, 1569-1571 (2008).
Hoffmann, Sebastian, Bhandare, Suhas, Pfau, Timo, Adamczyk, Olaf, Wördehoff, Christian, Peveling, Ralf, Porrmann, Mario, and Noe, Reinhold. “Frequency and Phase Estimation for Coherent QPSK Transmission With Unlocked DFB Lasers”. IEEE Photonics Technology Letters 20.18 (2008): 1569-1571.
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