Compatibility between nonlinear compensation and crosstalk compensation using MIMO processing in super-high-density multi-carrier transmission system

Yamamoto, Shuto; Saito, Kohei; Naka, Akinobu; Maeda, Hideki

doi:10.1109/ecoc.2015.7341893

Cited by 3 publications

(3 citation statements)

References 7 publications

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“…After the linear and non-linear compensation of transmission impairments via DBP, Kalman filter based adaptive MIMO equalization is implemented. This DSP block compensates the XT in the neighboring sub-carriers and further enhances the system performance in terms of transmission reach, input power and non-linear tolerance 31 . This MIMO DSP block consists of signal rotator, finite impulse response (FIR) filter with tap co-efficients h 11 , h 12 , h 21 and h 22 .…”

Section: Methodsmentioning

confidence: 99%

“…self-phase modulation (SPM), cross-phase modulation (XPM) and four-wave mixing (FWM), is a point of high interest from past few years29. On the other hand, multi-carrier signal transmission has attracted much attention3031. Most recently, systems with sub-carrier spacing less than the baud-rate have been reported achieving super high density and effectively compensating XT among the neighboring sub-carriers using MIMO3233.…”

Section: State Of the Artmentioning

confidence: 99%

“…Carrier frequency and phase recovery algorithms are implemented with-in the DD-LMS equalization loop. For jointly compensating the high speed signals, homodyne signal detection is a requisite 31 . To generate XT among the sub-carriers two dual-polarized signals are optically coupled with the sub-carrier spacing of Δ f = f 2 − f 1 , which is less than the system baud-rate.…”

Section: Transmission Model and Dsp Architecturementioning

confidence: 99%

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Advanced and flexible multi-carrier receiver architecture for high-count multi-core fiber based space division multiplexed applications

Asif

2016

Sci Rep

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Space division multiplexing (SDM), incorporating multi-core fibers (MCFs), has been demonstrated for effectively maximizing the data capacity in an impending capacity crunch. To achieve high spectral-density through multi-carrier encoding while simultaneously maintaining transmission reach, benefits from inter-core crosstalk (XT) and non-linear compensation must be utilized. In this report, we propose a proof-of-concept unified receiver architecture that jointly compensates optical Kerr effects, intra- and inter-core XT in MCFs. The architecture is analysed in multi-channel 512 Gbit/s dual-carrier DP-16QAM system over 800 km 19-core MCF to validate the digital compensation of inter-core XT. Through this architecture: (a) we efficiently compensates the inter-core XT improving Q-factor by 4.82 dB and (b) achieve a momentous gain in transmission reach, increasing the maximum achievable distance from 480 km to 1208 km, via analytical analysis. Simulation results confirm that inter-core XT distortions are more relentless for cores fabricated around the central axis of cladding. Predominantly, XT induced Q-penalty can be suppressed to be less than 1 dB up-to −11.56 dB of inter-core XT over 800 km MCF, offering flexibility to fabricate dense core structures with same cladding diameter. Moreover, this report outlines the relationship between core pitch and forward-error correction (FEC).

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Section: Methodsmentioning

confidence: 99%