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11.发明申请公开(公告)号：US20200028972A1
公开(公告)日：2020-01-23
申请号：US16338106
申请日：2017-09-27
Inventor： Anas AL RAWI , Leslie HUMPHREY
Abstract: A transmitter for transmitting data, using a discrete multi-tone modulation technique, to one or more receiver devices, each of which is connected to the transmitter device via at least one respective pair of wires, each receiver device being operable to receive signals detected as a change over time in the potential difference across the local ends of each respective pair of wires extending between the receiver and the transmitter device, is operable to transmit signals onto the wires extending between the transmitter device and the one or more receiver devices in a plurality of different modes, over a plurality of different channels, the different modes including phantom and differential modes and the different channels including a first set of phantom channels. The transmitter is further operable to select a second set of phantom channels from the first set, the second set being a subset of the first set comprising some or all of the phantom channels of the first set such that at least some of the phantom channels
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公开(公告)号：US20190082244A1
公开(公告)日：2019-03-14
申请号：US16087739
申请日：2017-03-30
Inventor： Anas AL RAWI , Leslie HUMPHREY , Trevor MORSMAN
IPC: H04Q11/00
Abstract: A telecommunications access network comprises a primary aggregation point in the form of an exchange, a plurality of optic fiber to metallic pair interface aggregation points which may be in the form of Distribution Point Units (DPUs) each of which is connected to the primary aggregation point by a respective optical fiber connection, and a plurality of terminating devices which may be in the form of customer premises equipment (CPE) devices, each of which is connected to a respective one of the optic fiber to metallic pair interface aggregation points by a respective twisted metallic pair connection. The access network further includes a plurality of metallic, interface-interface connections between one or more pairs of the optic fiber to metallic pair interface aggregation points. Each metallic, interface-interface connection preferably comprises three or more twisted metallic pairs of wires.
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13.发明申请公开(公告)号：US20180034618A1
公开(公告)日：2018-02-01
申请号：US15552932
申请日：2016-03-02
Inventor： Anas AL RAWI , Leslie HUMPHREY , Trevor LINNEY
CPC classification number: H04L5/20 , H04B3/32 , H04B3/50 , H04L25/03343 , H04L2025/0342 , H04L2025/03426 , H04M11/062
Abstract: Apparatus for communicating data between a transmitter device 16 and a first 51 and a second 52 receiver device, the receiver devices being connected, in use, to the transmitter device via a first 21 and a second 22 pair of wires respectively. Each receiver device is operable to receive signals detected as a change over time in the potential difference across the local ends of each respective pair of wires extending between the respective receiver device and the transmitter device, and the transmitter device is operable to transmit signals onto the wires at the transmitter ends thereof in order to transmit signals via a direct differential mode to each respective receiver via its respective pair of wires. The transmitter device is additionally operable to transmit signals to both receivers via a single common indirect channel and comprises: a channel estimator 1670, 1680, 1690 for estimating the extent of coupling between the common indirect channel and each of the receiver devices based on readings received by the transmitter device from the receiver devices; and a processor 1690 for determining a plurality of weighting values in dependence upon the estimated extents of the couplings; the transmitter 16 being operable to transmit a first signal via the direct differential mode over the first pair 21, to transmit a second signal via the direct differential mode over the second pair 22 and to transmit a combined signal onto the indirect channel, wherein the combined signal comprises a weighted sum of the first and second signals, the weighting being done in accordance with the determined weighting values; and wherein the transmitter further comprises a precoder 1640 for precoding the first, second and combined signals to pre-compensate them for the expected effects of cross-talk from the other ones of these signals, wherein the pre-coding of each signal, including the first and the second signals, is performed in dependence upon the determined weighting values.
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公开(公告)号：US20240072853A1
公开(公告)日：2024-02-29
申请号：US18261707
申请日：2021-12-17
Inventor： Andrew LORD , Anas AL RAWI , Neil PARKIN
IPC: H04B7/0456
CPC classification number: H04B7/0456
Abstract: A method of transmitting precoded signals can include precoding an optical signal to produce a precoded optical signal, transmitting a precoded optical signal over an optical portion of a first transmission channel, converting the precoded optical signal to a first MIMO signal, transmitting the first MIMO signal over a wireless portion of the first transmission channel, transmitting the precoded optical signal over an optical portion of a second transmission channel, converting the precoded optical signal to a second MIMO signal; transmitting the second MIMO signal over a wireless portion of the second transmission channel; wherein the precoding takes account of both first channel state information associated with the first transmission channel and second channel state information associated with the second transmission channel.
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Patent Agency Ranking
公开(公告)号：US20240039589A1
公开(公告)日：2024-02-01
申请号：US18256071
申请日：2021-12-01
Inventor： Anas AL RAWI , Arman SHOJAEIFARD , Trevor LINNEY
IPC: H04B7/0456 , H04B7/06
CPC classification number: H04B7/0486 , H04B7/0626
Abstract: A method of processing a plurality of multiple-input multiple-output (MIMO) signals for transmission over a plurality of communication channels can include precoding the plurality of signals prior to transmission, the precoding incorporating channel state information in relation to the plurality of communication channels, the precoding further incorporating: a priority ranking of a first channel of the plurality of communication channels relative to a second channel of the plurality of communication channels; and/or an error rate required by a channel of the plurality of communication channels; and/or an amount of noise experienced by a channel of the plurality of communication channels.
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公开(公告)号：US20210111755A1
公开(公告)日：2021-04-15
申请号：US16497576
申请日：2018-04-03
Inventor： Anas AL RAWI , Leslie HUMPHREY , Trevor LINNEY
Abstract: A method and apparatus for transmitting data from a transmitter device to one or more receiver devices connected to the transmitter device via a respective wire connection, the transmitter device being operable to transmit signals onto the wire connections and a further wire connection at different tones, the method comprising: for each tone, measuring electromagnetic coupling between the further wire connection and each of the wire connections and using the measurements, identifying a wire connection that most strongly receives crosstalk interference from the further wire connection; based on the identifications, for each tones, allocating signals transmitted on the further wire connection as supporting signals for a particular wire connection; transmitting a first signal onto the particular wire connection that has been allocated a supporting signal; and transmitting a second signal onto the further wire connection, thereby to cause crosstalk interference in the particular wire connection transmitting the first signal.
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公开(公告)号：US20200021331A1
公开(公告)日：2020-01-16
申请号：US16497599
申请日：2018-04-03
Inventor： Anas AL RAWI , Leslie HUMPHREY , Trevor LINNEY
Abstract: A method and apparatus for transmitting data from a transmitter device to one or more receiver devices connected to the transmitter device via a respective wire connection, the transmitter device being operable to transmit signals onto the wire connections and a further wire connection at different tones, the method comprising: for each tone, allocating signals transmitted on the further wire connection as supporting signals for a particular wire connection, and measuring electromagnetic coupling between the further wire connection and that particular wire connection; using the measurements, determining a power allocation for transmitting a supporting signal on the further wire connection; for one or more of the tones: transmitting a signal onto the particular wire connection, and transmitting a supporting signal onto the further wire connection at the determined transmission power, thereby to cause crosstalk interference in the particular wire connection.
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公开(公告)号：US20190222257A1
公开(公告)日：2019-07-18
申请号：US16329523
申请日：2017-08-29
Inventor： Anas AL RAWI , Christopher BOTHAM
CPC classification number: H04B3/32 , H04B3/487 , H04B3/50 , H04B7/02 , H04L5/14 , H04L5/20 , H04L25/085
Abstract: A method of transmitting, using a discrete multi-tone technique, data between a first and a second transceiver over a plurality of metallic pairs connected between the first and second transceivers, providing a plurality of transmission channels, is disclosed.
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公开(公告)号：US20180083815A1
公开(公告)日：2018-03-22
申请号：US15562165
申请日：2016-03-30
Inventor： Leslie HUMPHREY , Anas AL RAWI
CPC classification number: H04L27/265 , H04B3/32 , H04L25/0272 , H04L27/01 , H04L27/2647 , H04L27/34
Abstract: A system (100), (200), (310), (320) for transmitting data between an upstream transceiver (100) and a downstream transceiver (200) via two pairs of wires (310), (320) extending between the transceivers. The system comprises: the upstream transceiver (100) which includes first (110) and second (120) transmitter portions; the downstream transceiver (200) which includes first (210) and second (220) receiver portions for receiving signals transmitted by the upstream transceiver in a differential mode; and the two pairs of wires (310), (320) extending between the transceivers, the wires forming a composite channel through which signals transmitted by the upstream transceiver travel before being received by the downstream transceiver, the composite channel including direct differential mode channels h11 and h22 between the first and second transmitter portions on the one hand and the first and second receiver portions respectively on the other hand, and indirect channels h21 and h12 between the first and second transmitter portions on the one hand and the second and first receiver portions respectively on the other hand. The upstream transceiver is operable to transmit, to the downstream transceiver, using a discrete multi-tone protocol capable of using up to a number of different tones, a data signal in which related signals are transmitted onto both pairs of wires in a differential mode, such that, in use, each of the first and second receiver portions receives a respective one of the transmitted signals after modification by the composite channel together with some portion of the other related signal. Each receiver portion includes a fast Fourier Transform module for converting the received signal into the frequency domain and a related-signals processing frequency domain equaliser for further processing the resulting signal using frequency domain equalisation coefficients calculated in dependence upon estimated channel transfer functions associated with the direct differential mode channel terminating at the respective receiver portion and additionally in dependence upon estimated channel transfer functions associated with the indirect channel terminating at the respective receiver portion.
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