Pmc-sierra, Inc.

Maxlinear Asia Singapore Pte Ltd

Microsemi Storage Solutions (u.s.), Inc.

Bernard Guay

Ryan Santa

Winston K Mok

Gregory Jacob Erker

Carl Dietz McCrosky

Steven F Lang

Scott Arthur Muma

Jeffrey Scott Roe

Michael James Smith

Doug Konkin

Ian Gordon Barrett

Methods and systems are provided for converting wideband signals. In an example system, a wideband signal that includes one or more narrowband signals may be received and handled, with the handling may include selecting a subset of signal processing circuits, from a plurality of signal processing circuits in the system, with the number of selected signal processing circuits being less than the total number of signal processing circuits in the system. Only the selected signal processing circuits are then enabled, such that all remaining signal processing circuits are not enabled. Signal processing adjustment may then be applied, via the subset of signal processing circuits, only to the one or more narrowband signals, such that a remainder of the wideband signal is not adjusted. The handling of the received wideband signal may include separating the one or more narrowband signals from the wideband signal.

Method and apparatus for converting analog radio frequency (RF) signals to the digital domain in a multiband and multicarrier wireless communication system

Methods and systems are provided for converting wideband analog radio frequency (RF) signals. In an implementation, a first wideband analog RF signal may be received and handled. The first wideband analog RF signal comprises one or more first narrowband analog RF signals, with a total of bandwidths of the one or more first narrowband analog RF signals is less than a total bandwidth of the first wideband analog RF signal. Handling the first wideband analog RF signal may including selecting a first subset of analog-to-digital converters (ADCs) from a plurality of analog-to-digital converters (ADCs), with the number of ADCs in the first subset of ADCs being less than a total number of ADCs in the plurality of ADCs, and only the first subset of ADCs may be enabled. Only the one or more first narrowband analog RF signals may be analog-to-digital converted via the first subset of ADCs.

A method and system are provided for converting wideband analog radio frequency (RF) signals to a digital domain. In an implementation, the system comprises: an amplifier for receiving and amplifying a first wideband analog RF signal comprising one or more first narrowband analog RF signals, each first narrowband analog RF signal occupying a distinct non-overlapping spectral band within a spectrum of the first wideband analog RF signal; N down converter modules; N analog-to-digital converters (ADCs); and a cross-connect for connecting any one of the N down converter modules to one or more of the N ADCs to analog-to-digital convert only the first narrowband analog RF signals occupying the distinct non-overlapping spectral bands. The method and system of the present disclosure track the occupied bandwidth of the narrowband analog RF signals that make up a wideband analog RF signal rather than a total bandwidth of the wideband analog RF signal.

A bus interface for transfer of SONET/SDH data that supports a plurality of SONET/SDH flows. The invention supports two line coding schemes: 8B/10B encoding of STS-12, and SONET scrambled coding for STS-12, STS-48, and STS-51. The invention additionally supports two modes of line testing: entire links can be tested by inserting and checking PRBS sequences, and the SPE payload of the largest concatenated STS-Nc which the link can carry (STS-12c, STS-48c, STS-51c) can be individually tested by inserting and checking PRBS sequences.

Bus interface for transfer of multiple SONET/SDH rates over a serial backplane

A data detection system includes, in part, a CID detector, a DC balance monitor and a transition density detector. The CID detector is configured to detect whether the received data stream includes a CID exceeding a predetermined threshold count. The DC balance monitor is configured to detect DC imbalances in the incoming data and that may be indicative of errors in the data. The transition density detector is configured to detect whether a minimum transition density exists during a given time period. If a violation is detected by any one of these three detectors, an out-of-frame signal is asserted. The incoming data stream may be a scrambled SONET or SDH data stream.

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Vancouver, Canada

Bernard Guay