Electrical duobinary soft information receiver for NRZ modulation fiber transmission

    公开(公告)号:US11901954B2

    公开(公告)日:2024-02-13

    申请号:US17594357

    申请日:2020-04-09

    Inventor: Rainer Strobel

    CPC classification number: H04B10/69 H04B10/5167

    Abstract: A receiver circuit is disclosed and is configured to receive an optical signal. The receiver circuit includes a receiving circuit configured to receive the optical signal and convert the optical signal from a duobinary signal format into a binary signal based on a plurality of decision thresholds. The receiver circuit also includes a clock data recovery circuit configured to sample the binary signal per data period at a first time instant based on a predetermined clock data recovery technique, and sample the binary signal per data period at a second time instant offset from the first instant, as well as determine an intermediate sample based on an offset for decoding a transmitted bit sequence according to soft information based on the samples.

    OPTICAL NETWORK UNIT ACTIVATION AND LOW LATENCY TRANSMISSIONS IN DELAY SENSITIVE NETWORKS

    公开(公告)号:US20220247509A1

    公开(公告)日:2022-08-04

    申请号:US17649334

    申请日:2022-01-28

    Inventor: Rainer Strobel

    Abstract: According to an aspect of an embodiment, a method may include assigning an activation window by an optical line terminal during a portion of an upstream transmitting window in a passive optical network (PON). The method may include performing a first modification to a first upstream transmission. The method may include performing a second modification to a second upstream transmission. The method may include receiving the first upstream transmission from a first optical network unit (ONU) during the activation window, the first ONU synchronized in the PON. The method may include receiving a second upstream transmission from a second ONU during the activation window, the second ONU requesting activation in the PON.

    Optical network unit activation and low latency transmissions in delay sensitive networks

    公开(公告)号:US12155459B2

    公开(公告)日:2024-11-26

    申请号:US17649334

    申请日:2022-01-28

    Inventor: Rainer Strobel

    Abstract: According to an aspect of an embodiment, a method may include assigning an activation window by an optical line terminal during a portion of an upstream transmitting window in a passive optical network (PON). The method may include performing a first modification to a first upstream transmission. The method may include performing a second modification to a second upstream transmission. The method may include receiving the first upstream transmission from a first optical network unit (ONU) during the activation window, the first ONU synchronized in the PON. The method may include receiving a second upstream transmission from a second ONU during the activation window, the second ONU requesting activation in the PON.

    HIGH-CAPACITY CHANNEL FOR HIGHER SPEED PASSIVE OPTICAL NETWORKS

    公开(公告)号:US20230361904A1

    公开(公告)日:2023-11-09

    申请号:US18314705

    申请日:2023-05-09

    CPC classification number: H04J14/0221 H04J14/0245 H04Q11/0067

    Abstract: According to an aspect of an embodiment, an optical line terminal (OLT) configured for downstream transmission in a passive optical network (PON) may comprise a processing device and a transceiver. The processing device may be configured to: generate a first downstream signal for transmission on a first channel at a first signal level, and generate a second downstream signal for transmission on a second channel at a second signal level. The first signal level may be greater than the second signal level. The PMD transmitter may be configured to transmit a combined downstream signal comprising the first downstream signal and the second downstream signal. The first transmit power of the first downstream signal may be selected based on a comparison to a second transmit power of the second downstream signal to facilitate reception of the first downstream signal from the combined downstream signal at an optical network unit (ONU).

    DISTORTION-OPTIMIZED TRANSMISSION IN HYBRID FIBER COAX NETWORKS

    公开(公告)号:US20220149891A1

    公开(公告)日:2022-05-12

    申请号:US17434383

    申请日:2020-02-26

    Abstract: A node circuit associated with a hybrid fiber coax (HFC) network is disclosed. The node circuit includes an optimizer circuit configured to process a plurality of signal-to-noise ratio (SNR) values associated with a plurality of subcarriers, respectively, associated with a set of cable modem (CM) circuits coupled to the node circuit. In some embodiments, the plurality of subcarriers comprises subcarriers that are allocated to the set of CM circuits for communication with the node circuit. In some embodiments, the optimizer circuit is further configured to determine an optimal transmit power of the node circuit, based on the plurality of SNR values and a distortion model of a transmitter circuit associated with the node circuit. In some embodiments, the distortion model defines a transmitter distortion associated with the transmitter circuit.

    OPTICAL NETWORK UNIT ACTIVATION AND LOW LATENCY TRANSMISSIONS IN DELAY SENSITIVE NETWORKS

    公开(公告)号:US20250096920A1

    公开(公告)日:2025-03-20

    申请号:US18961424

    申请日:2024-11-26

    Inventor: Rainer Strobel

    Abstract: According to an aspect of an embodiment, a method may include assigning an activation window by an optical line terminal during a portion of an upstream transmitting window in a passive optical network (PON). The method may include performing a first modification to a first upstream transmission. The method may include performing a second modification to a second upstream transmission. The method may include receiving the first upstream transmission from a first optical network unit (ONU) during the activation window, the first ONU synchronized in the PON. The method may include receiving a second upstream transmission from a second ONU during the activation window, the second ONU requesting activation in the PON.

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