{"guid":"1fe84c49-49c9-54ec-815b-f95ccefe4234","title":"Analyzing network reliability up to 800G - Impact of SNR thresholds on BER for Coherent (16QAM) and Non-Coherent (PAM4) high speed transceivers under environmental variations","subtitle":null,"slug":"denog16-55842-analyzing-network-reliability-up-to-800g-impact-of-snr-thresholds-on-ber-for-coherent-16qam-and-non-coherent-pam4-high-speed-transceivers-under-environmental-variations","link":"https://pretalx.com/denog16/talk/KBFMT3/","description":"This presentation investigates the proximity to a low Signal-to-Noise Ratio (SNR) threshold that can still maintain a tolerable Bit Error Rate (BER) in 100G / 400G / 800G network links. Additionally, we account for factors such as temperature and cable length to predict the duration for which a reliable network connection can be sustained between transceivers. The analysis, based on data retrieved using a Flexbox, focuses on comparing the reliability of coherent (16QAM) and non-coherent (PAM4) transceivers, with a detailed discussion on the implications of these technologies on network performance. For a better understanding of the correlation between these factors, Machine Learning techniques were used.\n\nLicensed to the public under http://creativecommons.org/licenses/by/4.0","original_language":"eng","persons":["Dr. Gerhard Stein","Thomas Weible"],"tags":["55842","denog16","Auditorium","2024","Day 1"],"view_count":78,"promoted":false,"date":"2024-11-18T17:30:00.000+01:00","release_date":"2024-11-19T00:00:00.000+01:00","updated_at":"2025-12-30T12:15:10.682+01:00","length":1813,"duration":1813,"thumb_url":"https://static.media.ccc.de/media/events/denog/denog16/55842-1fe84c49-49c9-54ec-815b-f95ccefe4234.jpg","poster_url":"https://static.media.ccc.de/media/events/denog/denog16/55842-1fe84c49-49c9-54ec-815b-f95ccefe4234_preview.jpg","timeline_url":"https://static.media.ccc.de/media/events/denog/denog16/55842-1fe84c49-49c9-54ec-815b-f95ccefe4234.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/events/denog/denog16/55842-1fe84c49-49c9-54ec-815b-f95ccefe4234.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/denog16-55842-analyzing-network-reliability-up-to-800g-impact-of-snr-thresholds-on-ber-for-coherent-16qam-and-non-coherent-pam4-high-speed-transceivers-under-environmental-variations","url":"https://api.media.ccc.de/public/events/1fe84c49-49c9-54ec-815b-f95ccefe4234","conference_title":"DENOG16","conference_url":"https://api.media.ccc.de/public/conferences/denog16","related":[],"recordings":[{"size":387,"length":1813,"mime_type":"video/webm","language":"eng","filename":"denog16-55842-eng-Analyzing_network_reliability_up_to_800G_-_Impact_of_SNR_thresholds_on_BER_for_Coherent_16QAM_and_Non-Coherent_PAM4_high_speed_transceivers_under_environmental_variations_webm-hd.webm","state":"new","folder":"webm-hd","high_quality":true,"width":1920,"height":1080,"updated_at":"2024-11-19T14:26:16.559+01:00","recording_url":"https://cdn.media.ccc.de/events/denog/denog16/webm-hd/denog16-55842-eng-Analyzing_network_reliability_up_to_800G_-_Impact_of_SNR_thresholds_on_BER_for_Coherent_16QAM_and_Non-Coherent_PAM4_high_speed_transceivers_under_environmental_variations_webm-hd.webm","url":"https://api.media.ccc.de/public/recordings/81660","event_url":"https://api.media.ccc.de/public/events/1fe84c49-49c9-54ec-815b-f95ccefe4234","conference_url":"https://api.media.ccc.de/public/conferences/denog16"},{"size":76,"length":1813,"mime_type":"video/webm","language":"eng","filename":"denog16-55842-eng-Analyzing_network_reliability_up_to_800G_-_Impact_of_SNR_thresholds_on_BER_for_Coherent_16QAM_and_Non-Coherent_PAM4_high_speed_transceivers_under_environmental_variations_webm-sd.webm","state":"new","folder":"webm-sd","high_quality":false,"width":720,"height":576,"updated_at":"2024-11-19T14:24:58.530+01:00","recording_url":"https://cdn.media.ccc.de/events/denog/denog16/webm-sd/denog16-55842-eng-Analyzing_network_reliability_up_to_800G_-_Impact_of_SNR_thresholds_on_BER_for_Coherent_16QAM_and_Non-Coherent_PAM4_high_speed_transceivers_under_environmental_variations_webm-sd.webm","url":"https://api.media.ccc.de/public/recordings/81659","event_url":"https://api.media.ccc.de/public/events/1fe84c49-49c9-54ec-815b-f95ccefe4234","conference_url":"https://api.media.ccc.de/public/conferences/denog16"},{"size":85,"length":1813,"mime_type":"video/mp4","language":"eng","filename":"denog16-55842-eng-Analyzing_network_reliability_up_to_800G_-_Impact_of_SNR_thresholds_on_BER_for_Coherent_16QAM_and_Non-Coherent_PAM4_high_speed_transceivers_under_environmental_variations_sd.mp4","state":"new","folder":"h264-sd","high_quality":false,"width":720,"height":576,"updated_at":"2024-11-19T13:24:22.742+01:00","recording_url":"https://cdn.media.ccc.de/events/denog/denog16/h264-sd/denog16-55842-eng-Analyzing_network_reliability_up_to_800G_-_Impact_of_SNR_thresholds_on_BER_for_Coherent_16QAM_and_Non-Coherent_PAM4_high_speed_transceivers_under_environmental_variations_sd.mp4","url":"https://api.media.ccc.de/public/recordings/81647","event_url":"https://api.media.ccc.de/public/events/1fe84c49-49c9-54ec-815b-f95ccefe4234","conference_url":"https://api.media.ccc.de/public/conferences/denog16"},{"size":18,"length":1813,"mime_type":"audio/opus","language":"eng","filename":"denog16-55842-eng-Analyzing_network_reliability_up_to_800G_-_Impact_of_SNR_thresholds_on_BER_for_Coherent_16QAM_and_Non-Coherent_PAM4_high_speed_transceivers_under_environmental_variations_opus.opus","state":"new","folder":"opus","high_quality":false,"width":0,"height":0,"updated_at":"2024-11-19T13:23:36.458+01:00","recording_url":"https://cdn.media.ccc.de/events/denog/denog16/opus/denog16-55842-eng-Analyzing_network_reliability_up_to_800G_-_Impact_of_SNR_thresholds_on_BER_for_Coherent_16QAM_and_Non-Coherent_PAM4_high_speed_transceivers_under_environmental_variations_opus.opus","url":"https://api.media.ccc.de/public/recordings/81646","event_url":"https://api.media.ccc.de/public/events/1fe84c49-49c9-54ec-815b-f95ccefe4234","conference_url":"https://api.media.ccc.de/public/conferences/denog16"},{"size":27,"length":1813,"mime_type":"audio/mpeg","language":"eng","filename":"denog16-55842-eng-Analyzing_network_reliability_up_to_800G_-_Impact_of_SNR_thresholds_on_BER_for_Coherent_16QAM_and_Non-Coherent_PAM4_high_speed_transceivers_under_environmental_variations_mp3.mp3","state":"new","folde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