wiredInUSA June 2018

An AI first

Indonesian project underway

NEC Corporation has announced successful transmission tests on a commercial subsea cable using artificial intelligence (AI) and probabilistic shaping at a modulation of 64QAM. In a joint research publication with Google, NEC demonstrated that the Faster open subsea cable can be upgraded to a spectral efficiency of 6 bits per second per hertz (b/s/Hz) over an 11,000km segment. This represents a capacity of over 26 terabits per second (higher than originally planned for the cable, for no additional wet plant capital expenditure). The resultwas achievedusingnear-Shannon probabilistic-shaping at a modulation of 64QAM. For the first time on a live cable, AI was used to analyze data for the purpose of nonlinearity compensation (NLC). NEC developed an NLC algorithm based on data-driven deep neural networks to estimate the signal nonlinearity. “Other approaches toNLChaveattempted to solve thenonlinear Schrodinger equation, which requires the use of very complex algorithms,” said NEC’s Toru Kawauchi, general manager, submarine network division.

The commencement ceremony at Indonesia’s Suryacipta Park. Photograph courtesy of ZTT

China’s ZTT Group is developing a new facility in Indonesia. PT ZTT Cable Indonesia (ZTT Indonesia) celebrated with a grand commencement ceremony in Indonesia’s Suryacipta Park. Xue Jiping, director of ZTT Group, and Ye Zhifeng, general manager of ZTT Indonesia, took part in a ground breaking ceremony and expressed gratitude for all the guests’ support and help during the preparation to construct ZTT Indonesia. Mr Ye said that ZTT has provided product and system solutions for hundreds of electric power companies and communication operators from its 48 branch offices worldwide. The group has registered subsidiaries in the US and Germany, and overseas plants in India, Brazil, Uzbekistan and Indonesia.

wiredInUSA - June 2018

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