The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
We experimentally demonstrate 18×64-Gb/s Nyquist PDM-16QAM signal transmission over 800-km single-mode fiber. The receiver matched filtering and channel's linear impairment compensation are jointly processed with a single linear filter, greatly reducing the computational complexity.
We show that fiber nonlinearity compensation of just the training sequence improves the nonlinearity-limited performance of training-aided m-QAM systems. Experimental results demonstrate transmission performance improvement by 0.4 dB for a 120-Gb/s 64-QAM 800-km system.
We present a coherent single-carrier system with optimized channel estimation and low-complexity fractionally-spaced frequency-domain equalizer. The concept is experimentally demonstrated for QPSK and 16-QAM systems to enable substantial overhead and complexity reduction without performance degradation.
A Stokes vector based non-data-aided DGD monitoring scheme for 40-Gb/s polarization-multiplexed coherent optical OFDM systems with low-bandwidth sampling is reported. The DGD estimation error is less than 2.5 ps after 1000-km long-haul transmissions.
We propose the use of modified duobinary modulation in the downlink of a wavelength-reused WDM access network to combat the impacts of dispersion and reduce the crosstalk between 40-Gb/s downstream and 10-Gb/s upstream signals.
We provide a performance comparison of new training sequences in 16-QAM and QPSK coherent polarization-multiplexed single-carrier system. Two types of binary sequences are compared under various impairments to confirm similar performance to ideal Chu sequences.
We propose a technique for polarization-mode-dispersion (PMD) estimation in 16-QAM coherent polarization-multiplexed single-carrier system using complementary Golay training sequences and channel response filter analysis. The technique is experimentally proved to be fast and highly accurate.
We experimentally demonstrate coherent polarization-multiplexed QPSK and 16QAM single-carrier system with frequency-domain-equalization over 800-km in-line transmission using binary training sequences. The sequences are designed to be practical and achieve accurate channel estimation in full-system demonstration.
We present a novel moments-based method for optical signal-to-noise ratio (OSNR) monitoring in polarization-multiplexed coherent optical systems. The method is experimentally demonstrated to show high accuracy in OSNR monitoring over a large range for both constant and non-constant modulus modulation formats.
We experimentally demonstrate full-transmission chromatic dispersion estimation with high accuracy in 40-Gb/s coherent polarization-multiplexed single-carrier system using binary complementary Golay training sequences. The technique is verified to be robust against polarization-mode-dispersion and amplified-spontaneous-emission noise.
In this paper, we present a chromatic dispersion (CD) estimation technique based on complementary Golay sequences for systems employing single-carrier with frequency domain equalization (SC-FDE) format. By exploiting the unique correlation property of Golay sequences and using the sequences as channel estimation symbol (CES), chromatic dispersion can be estimated by measuring partial phase response...
We report high speed operation in WDM-PON with low-bandwidth RSOA using partial response equalization and optical filter detuning techniques. 20 Gb/s transmission over 10 km fiber is demonstrated with good performance using only 1-GHz-bandwidth RSOA.
We investigate the characteristics of 10 Gb/s upstream transmission in WDM-PON using bandwidth-limited RSOA and various lengths of fiber. We demonstrate that four-level partial response equalization is capable of mitigating the impact of ISI in networks with reach from 0 km to 75 km.
We propose an extended reach 10 Gb/s WDM-PON system using low-bandwidth RSOA and partial response equalization. The system is demonstrated experimentally and via simulation over 50 km fiber link with good performance.
We report long-reach PON systems utilizing distributed Raman amplification for rural and remote areas. Symmetric 2.5-Gb/s bidirectional transmission is achieved over 60-km reach. We also discuss the practical deployment issues and economics of long-reach PON.
We investigates MAC layer performances of traditional RoF-based and newly emerging Pico BS-based WiMax networks. It is shown that the latter is preferred for the throughput and delay while the former has the merit of physical simplicity.
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.