Progress in Soft-Decision FEC

Matsukawa, Takashi; Miyata, Yoshikuni; Kubo, Kazuya; Sugihara, Takashi; Onohara, Kiyoshi; Yoshida, Hideo

doi:10.1364/nfoec.2011.nwc2

Cited by 37 publications

(19 citation statements)

References 4 publications

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“…Fig. 3 demonstrates that the effect of phase noise is non negligible starting from realistic values of (the appearance of cycle slips reported in [13] suggests that realistic values of are in the order of , at least in the cases considered in the cited reference).…”

Section: Simulation Resultsmentioning

confidence: 90%

Estimate of Information Rates of Discrete-Time First-Order Markov Phase Noise Channels

Barletta

Magarini

Spalvieri

2011

IEEE Photon. Technol. Lett.

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The constrained capacity of the additive white Gaussian noise channel affected by Wiener phase noise is investigated in the letter. Evaluation of channel capacity based on quantization of the phase space and trellis representation of the memory is proposed. The results presented in the letter show that quantization of the phase into 128 bins is adequate to accurately evaluate the capacity at signal-to-noise ratio lower than 30 dB.

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Section: Simulation Resultsmentioning

confidence: 90%

Estimate of Information Rates of Discrete-Time First-Order Markov Phase Noise Channels

Barletta

Magarini

Spalvieri

2011

IEEE Photon. Technol. Lett.

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“…Note that the state transition probability p(φ k |φ k−1 ) appears in (5) in place of p(φ k |φ k−1 , z k−1 1 ) thanks to the Markovian property (2). Moreover, thanks to (3), the channel transition probability p(z k |φ k ) can be used in place of p(z k |φ k , z k−1 1 ) in (5).…”

Section: Bayesian Trackingmentioning

confidence: 99%

“…Recent studies about the phase noise that arises in optical channels and about its effects in coherent optics can be found in [1][2][3]. The basic model of laser phase noise is a Wiener process, [3], [4], where the power spectral density (PSD) of the spectral line is a slope of -20 dB/decade.…”

Section: Introductionmentioning

confidence: 99%

Computing the information rate of discrete-time Wiener phase noise channels by parametric Bayesian tracking

Barletta

2016

Opt. Express

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Abstract:A new upper bound (UB) on the information rate (IR) transferred through the additive white Gaussian noise channel affected by Wiener's laser phase noise is proposed in the paper. The bound is based on Bayesian tracking of the noisy phase. Specifically, the predictive and posterior densities involved in the tracking are expressed in parametric form, therefore tracking is made on parameters. This make the method less computationally demanding than known non-parametric methods, e.g. methods based on phase quantization and trellis representation of phase memory. Simulation results show that the UB is so close to the lower bound that we can claim of having virtually computed the actual IR.

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“…In a word, the main contribution of this paper is the comprehensive analysis of the power efficiency and long-reach transmission performance in IM/DD OFDM-PONs. Simulation results show that our system has the higher power efficiency by using IHHA compared with traditional power loading algorithms, and bit error rate (BER) satisfies the forward error correction (FEC) limitation [21] after 100 km single-mode fiber (SMF) transmission. In addition, we analyze the power efficiency with the variation of data rate demand and transmission distance.…”

Section: Introductionmentioning

confidence: 99%

Power-efficient schemes using directly modulated lasers for intensity modulation and direct detection OFDM-PONs

2015

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The intensity modulation and direct detection (IM/DD) passive optical network (PON) has been demonstrated as a cost-effective solution for a long-reach (> 80 km) access system because it can be easily installed and maintained with low cost and complexity. Meanwhile, orthogonal frequency division multiplexing (OFDM) has been widely used in PONs due to its high spectral efficiency and strong resistance to dispersion impairments. So, the IM/DD OFDM-PON emerged. The power efficiency has attracted great research interests in IM/DD OFDM-PONs. The previous works achieved power savings from the perspective of MAClayer or hardware-level optimization, but they neglected designing appropriative algorithms, and the long-reach transmission performance cannot be guaranteed. In this paper, we propose an improved Hughes-Hartogs algorithm (IHHA) to adjust the number of bits and power level allocated for each subcarrier, with the objective to minimize the electrical transmitting power of all subcarriers. The OFDM signal is generated according to the bit/power allocation result of IHHA, and we conduct extensive simulations to verify the long-reach transmission performance of our system. Simulation results show that our system has high power efficiency by using IHHA, and bit error rate satisfies the forward error correction limitation after 100 km single-mode fiber transmission.

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Progress in Soft-Decision FEC

Cited by 37 publications

References 4 publications

Estimate of Information Rates of Discrete-Time First-Order Markov Phase Noise Channels

Estimate of Information Rates of Discrete-Time First-Order Markov Phase Noise Channels

Computing the information rate of discrete-time Wiener phase noise channels by parametric Bayesian tracking

Power-efficient schemes using directly modulated lasers for intensity modulation and direct detection OFDM-PONs

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