Fast method for Q factor estimation in delay line demodulated DPSK optical communications systems

Avlonitis, N.S.; Tomkos, Ioannis

doi:10.1109/icton.2009.5185327

Cited by 1 publication

(1 citation statement)

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“…Moreover, n i 's are correlated to each other in general, and they are also correlated to p i 's and p 0 . However, these correlations can be neglected under the assumption of wideband optical filtering and n i 's can be approximated by Gaussian random variables if OSNR is high [13]- [15]. If the optical channel has memory, i.e., when employing a narrowband optical bandpass filter or considering dispersion impairments, the most accurate method of calculating the BER performance of DPSK systems considering the ASE noise with post detection electrical filtering is via the Karhunen-Loève (KL) expansion method [17].…”

Section: Mbdd System Modelmentioning

confidence: 99%

Performance Evaluation of Multiple-Bit Delay Detection with Majority Vote Decision Rule in Optical DPSK Systems

Arbab

Rad

Uysal

et al. 2011

2011 IEEE Global Telecommunications Conference - GLOBECOM 2011

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In this paper, the performance of multiple-bit delay detection (MBDD) systems in optical differential phase shift keying (DPSK) is investigated. Assuming that the dominant noise in the system is originated by the optical amplifier and using Gaussian approximation, we present a closed form equation which predicts the overall bit-error-rate (BER) performance of the system as a function of the number of delay segments, optical signal-to-noise ratio (OSNR) at the receiver, and bandwidth of the optical bandpass filter. It is shown that with a large number of delay segments, the performance of MBDD system approaches to the performance of homodyne coherent detection.

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Section: Mbdd System Modelmentioning

confidence: 99%