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    SYSTEM AND METHOD FOR ENHANCING THE PERFORMANCE OF WIDEBAND DIGITAL RF TRANSPORT SYSTEMS
    11.
    发明授权
    SYSTEM AND METHOD FOR ENHANCING THE PERFORMANCE OF WIDEBAND DIGITAL RF TRANSPORT SYSTEMS 有权

    公开(公告)号：EP3267602B1

    公开(公告)日：2018-11-28

    申请号：EP17020235.2

    申请日：2007-04-06

    Applicant: CommScope Technologies LLC

    Inventor： WALA, Philip M.

    IPC: H04J3/16

    CPC classification number: H04J3/1647 ,  H04J3/1629

    Abstract: The host unit (101), disclosed herein, comprises: a plurality of inputs, each input configured to receive a wideband RF signal; a plurality of analog to digital converter circuits (102), each coupled to a selected one of the plurality of inputs, wherein each analog to digital converter circuit (102) is configured to generate a sample stream, wherein each analog to digital converter circuit (102) is configured to operate at a selected sample rate related to a signal bandwidth of its associated wideband RF signal; and a multiplexer circuit configured to multiplex together the plurality of sample streams into one serial bit stream at a fixed bit rate. The host unit (101), as comprised in the system (100), is coupled to a remote unit (103) via a transmission medium (111), the remote unit (103) comprising: a demultiplexer circuit configured to demultiplex the serial bit stream into a plurality of sample streams; a plurality of digital to analog converter circuits (118), each digital to analog converter circuit (118) configured to generating a wideband RF signal from one of the plurality of sample streams, wherein each digital to analog converter circuit (118) is configured to operate at an output sample rate related to a signal bandwidth of its associated wideband RF signal; and a plurality of outputs, each output coupled to a selected one of the plurality of the plurality of digital to analog converter circuits, wherein each output is configured to output a wideband RF signal.

    A COMMUNICATION DEVICE FOR PROVIDING DIGITAL TRANSPORT OF SIGNALS IN A DISTRIBUTED ANTENNA SYSTEM
    13.
    发明公开
    A COMMUNICATION DEVICE FOR PROVIDING DIGITAL TRANSPORT OF SIGNALS IN A DISTRIBUTED ANTENNA SYSTEM 审中-公开

    公开(公告)号：EP3585019A1

    公开(公告)日：2019-12-25

    申请号：EP19187936.0

    申请日：2010-01-13

    Applicant: Commscope Technologies LLC

    Inventor： CANNON, Jeffrey J. ,  ZAVADSKY, Dean ,  WALA, Philip M.

    IPC: H04L27/00 ,  H04L27/144 ,  H04L27/233 ,  H04W88/08

    Abstract: A communication device (500) includes a reception path circuit (506) configured to output digitised radio frequency spectrum at a sampling rate based on input signals. A logic device (503), coupled to the reception path circuit, is configured to receive digitised radio frequency spectrum at the input sampling rate. The logic device produces sets of digitised baseband data samples at a plurality of sampling rates, each set of digitised baseband data samples corresponding to a distinct spectral region of an analogue radio frequency spectrum. The logic device maps each of the sets of digitised baseband data samples to a corresponding set of timeslots of a serial data stream transport frame.
    A complimentary communication device (500) includes a transmission path circuit (504) configured to output signals based on a received digitised radio frequency spectrum. A logic device (503), coupled to the transmission path circuit, is configured to receive an input transport frame having sets of timeslots, each set of timeslots including a set of digitised baseband data samples at one of a plurality of sampling rates. Each set of timeslots corresponds to a distinct spectral region of analogue radio frequency spectrum. The logic device is configured to generate a further set of digitised data samples for each set of the timeslots at an output sampling rate and sums at least two of the further sets of digitised data samples to produce a set of output data samples at the output sampling rate.

    SYSTEMS AND METHODS FOR MOBILE PHONE LOCATION WITH DIGITAL DISTRIBUTED ANTENNA SYSTEMS
    15.
    发明公开
    SYSTEMS AND METHODS FOR MOBILE PHONE LOCATION WITH DIGITAL DISTRIBUTED ANTENNA SYSTEMS 审中-公开

    公开(公告)号：EP3726897A1

    公开(公告)日：2020-10-21

    申请号：EP20178954.2

    申请日：2010-01-11

    Applicant: CommScope Technologies LLC

    Inventor： WALA, Philip M. ,  ZAVADSKY, Dean

    IPC: H04W64/00 ,  H04W4/02 ,  G01S5/00 ,  G01S5/02 ,  G01S5/06 ,  H04W24/00 ,  H04W76/00

    Abstract: Systems for mobile phone location within a digital distributed antenna system (DAS) are provided. A remote unit (106, 200) for a DAS (100) comprises a digital to analog radio frequency transceiver module (208) for generating a digitized RF signal from an analog RF signal received from a subscriber unit (108). A locator receiver (216) generates subscriber unit (108) ranging data from the digitized signal and outputs this as Internet Protocol formatted data. A serial RF module (220) can receive the digitized signal from the transceiver module (208), and also comprises an interface (222) for receiving the IP formatted data. The RF module (220) outputs a serial data stream to a host unit (102), which includes digitized RF signals corresponding to distinct spectral regions of analog RF spectrum, and further includes a bidirectional Ethernet pipe for transporting the ranging data to the host unit (102) as IP formatted data.

    SYSTEM AND METHOD FOR ENHANCING THE PERFORMANCE OF WIDEBAND DIGITAL RF TRANSPORT SYSTEMS
    17.
    发明公开
    SYSTEM AND METHOD FOR ENHANCING THE PERFORMANCE OF WIDEBAND DIGITAL RF TRANSPORT SYSTEMS 审中-公开

    公开(公告)号：EP3468076A1

    公开(公告)日：2019-04-10

    申请号：EP18205036.9

    申请日：2007-04-06

    Applicant: Commscope Technologies LLC

    Inventor： WALA, Philip M.

    IPC: H04J3/16

    Abstract: A system and method for enhancing the performance of wideband digital RF transport systems is disclosed, which enables the transport of different bandwidth segments on a plurality of wideband channels by selecting an optimal clock sample rate for each bandwidth segment to be transported. Thus, the bandwidth segments are proportionally allocated so that an optimum amount of bandwidth can be transported at the serial bit rate. As one example, a system for enhancing the performance of a wideband digital RF transport system is disclosed, which includes a transmit unit, a receive unit, and an optical transmission medium connected between the transmit unit and the receive unit. The transmit unit includes a plurality of wideband RF analog signal inputs coupled to a plurality of analog-to-digital, digital down-converter (AID DDC) devices. Notably, the sample rate of each AID DDC device is determined by a respective sample clock. The digitized wideband RF segments at the outputs of the AID DDC devices are combined and converted to a frame structure, converted to serial form, and transmitted on the optical transmission medium to the receive unit. A light detector device in the receive unit detects the serial bit stream on the optical transmission medium, the serialized frames are converted back to the original frame format, and the original digitized wideband RF segments are reconstructed. Each digitized wideband RF segment is coupled to a respective D/A digital up-converter (D/A DUC) device associated with a particular wideband RF signal input on the transmit side. Notably, the output sample rate of each DI A DUC device is determined by a respective sample clock, which provides the same sample rate as that of the associated AID DDC device in the transmit unit. The sample rate of each AID DDC device (and associated D/A DUC device) is pre-selected so that the transmission medium can transport the optimum amount of RF bandwidth at the given serial bit rate.

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