8QAM


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AcronymDefinition
8QAM8-State Quadrature Amplitude Modulation
References in periodicals archive ?
The demonstration used Acacia's CFP2-DCO modules with 50GHz channel spacing and 200G 8QAM modulation, which additionally showcase the ability to support transmission of up to 19.2T on a single fibre using Tencent's 96 channel OPC-4 and Acacia's CFP2-DCO modules.
Elastic optical network is deployed with a typical channel spacing of 12.5 GHz ([G.sub.EON] = 12.5 GHz) and five modulation format assignment scenarios including four single modulation format (BPSK, QPSK, 8QAM and 16QAM) and a distance-adaptive schemes.
This allows the margin to be shared, which effectively 'pulls up' the red wavelength using the excess FEC margin from the blue wavelength, so both are now above the 8QAM commissioning limit.
The value domain of each attribute in the decision table is expressed as follows: 1) Modulation mode ([C.sub.1]) : BPSK, QPSK, 8QAM, 32QAM .
The 150 Gb/s per wavelength 8QAM (quadrature amplitude modulation) trial was conducted on a live research network that connects Cienas labs in Ottawa with StarLights Chicago-based R&E communication services exchange facility, at a distance of more than 1,440 km.
Compare with the AM scheme, the SNR gain between 75%-DP and 8QAM is 4.6 db, the gain between 50%-DP and QPSK is 1.17 db, the BER performance of 25%-DP is as same as that of BPSK, at [10.sup.-3] BER.
ASNs brand new 300G 8QAM technology from its 1620 SOFTNODE enables smart spectrum engineering.
The field trial, conducted over live fiber links in a 610km span of a leading European service provider's fiber optic network, showcased transmission of multiple single-lambda 200G channels (30x200G) over the full distance of 610km using multiple modulation schemes (QPSK, 8QAM, and 16QAM), with successful demonstration of bandwidth variable transponder capabilities and excellent margin performance.
Best-in-class 100G and Beyond Optical Transmission Technology now available in the Coriant hiT 7300 Multi-Haul Transport Platform, Coriant mTera Universal Transport Platform (UTP), and Coriant Groove G30 DCI Platform, Coriant CloudWave Optics technology leverages a leading signal processing engine, optimized integrated photonics, and embedded software to deliver flexible transmission at 100G (QPSK), 150G (8QAM), and 200G (16QAM) with ultra-long reach (up to 5,000 km terrestrial) and industry-leading high density and low power consumption