Abstract: In a communication system, Huffman coding techniques are used to obtain shaping gains for an improvement in data transmission rates. More particularly, a novel method of Huffman shaping is described that achieves a shaping gain of greater than 1 dB. The shaping gain results in a higher data rate transmission in a communication system where transmitted power is constrained.

Abstract: A system and method for producing a family of power modules having a common footprint that enables the customer to flexibly choose a power module size without incurring the costs of a relayout of a system design. In one embodiment, a board layout can be designed using a selected power module footprint size that supports an installation of any of a plurality of power modules. The power module that is used in a board layout can be selected based on a measurement of an amount of power consumed by the one or more loads.

Abstract: A multi-port SERDES transceiver includes multiple parallel and serial ports, and the flexibility to connect any one of the parallel or serial ports to another parallel or serial port. The ports include programmable pads that are capable of supporting multiple different data protocols, timing protocols, electrical specifications, and input-output functions. A management data IO pad also enables the transceiver to support different electrical requirements and data protocols at the same time. The substrate layout of the transceiver is configured so that the parallel ports and the serial ports are on the outer perimeter. A logic core is at the center, where the logic core operates the serial and parallel data ports, and the bus that connects the data ports. The bus can be described as a “ring” structure (or donut “structure”) around the logic core, and is configured between the logic core and the data ports.

Abstract: Methods and systems for watermark embedding in a multimedia system-on-chip are disclosed and may comprise decrypting an encrypted and signed watermarking signal using a security processor integrated within the system-on-chip and embedding a watermark into a multimedia signal utilizing the decrypted watermarking signal, which may comprise an embedding key, a message to be embedded, and embedding parameters. The encrypted and signed watermarking signal may be received from an external memory via a host CPU within the system-on-chip or a secure server. The decrypted watermarking signal may be verified utilizing a signature, a public key and a random number generated locally. The verified watermarking signal may be stored on a non-volatile memory within the system-on-chip, or re-encrypted and re-signed before storing on a non-volatile memory that is external to the system-on-chip.

Abstract: A method for processing signals includes, in a wireless system comprising one or more processors and/or circuits integrated within a single chip, initializing values related to at least one channel response vector and at least one correlation vector using a conjugate gradient-based (CG) algorithm. A plurality of filter taps may be updated utilizing at least one channel response vector and at least one correlation vector, for a plurality of received clusters, based on the initialized values and at least one signal-to-noise ratio (SNR) for the received signal clusters. At least a portion of the received signal clusters may be filtered utilizing at least a portion of the updated plurality of filter taps. The updating may be repeated whenever a specified signal-to-noise ratio (SNR) for the received clusters is reached. The initialized values may be updated during a plurality of iterations.

Abstract: Methods, systems and computer program products to maintain cache coherency, in a System On Chip (SOC) which is part of a distributed shared memory system are described. A local SOC unit that includes a local controller and an on-chip memory is provided. In response to receiving a request from a remote controller of a remote SOC to access a memory location, the local controller determines whether the local SOC has exclusive ownership of the requested memory location, sends data from the memory location if the local SOC has exclusive ownership of the memory location and stores an entry in the on-chip memory that identifies the remote SOC as having requested data from the memory location. The entry specifies whether the request from the remote SOC is for exclusive ownership of the memory location. The entry also includes a field that identifies the remote SOC as the requester. The requested memory location may be external or internal to the local SOC unit.

Abstract: A system and method for secure communication for power over Ethernet (PoE) between a computing device and a switch. Various power management information can be used as inputs in a process for determining a power request/priority. This power management information can be communicated in Layer 2, Layer 3, or higher messaging during initial power allocation and ongoing power reallocation. Encryption of such messaging enables confidentiality, secure allocation processes, and prevention of denial of service attacks.

Abstract: A network device for processing packets. The network device includes an ingress module for performing switching functions on an incoming packet. The network device also includes a memory management unit for storing packets and performing resource checks on each packet and an egress module for performing packet modification and transmitting the packet to an appropriate destination port. Each of the ingress module, memory management unit and egress module includes multiple cycles for processing instructions and each of the ingress module, memory management unit and egress module processes one packet every clock cycle.

Abstract: The present invention provides several scalable integrated circuit high density capacitors and their layout techniques. The capacitors are scaled, for example, by varying the number of metal layers and/or the area of the metal layers used to form the capacitors. The capacitors use different metallization patterns to form the metal layers, and different via patterns to couple adjacent metal layers. In embodiments, optional shields are included as the top-most and/or bottom-most layers of the capacitors, and/or as side shields, to reduce unwanted parasitic capacitance.

Abstract: A linear high powered integrated circuit amplifier includes a plurality of power amplifiers, balanced integrated circuit coupling, and a combining circuit. The balanced integrated circuit coupling couples a signal to the plurality of power amplifiers to the up-conversion module such that the power amplifiers amplify the signal to produce a plurality of amplified radio frequency (RF) signals. The combining circuit is operably coupled to combine the plurality of amplified RF signals to produce a high-powered amplified signal.

Abstract: Aspects of a method and system for selective equalization enablement based on modulation type may be found in a method for processing a radio frequency (RF) signal that comprises receiving a Bluetooth signal via an RF channel, detecting a modulation type of the received Bluetooth signal, and selecting an equalization circuit for processing the received Bluetooth signal based on the detected modulation type. The method may also comprise determining a data rate based on the detected modulation type.

Abstract: A technique is described for concealing the effect of a lost frame in a series of frames representing an encoded audio signal in a sub-band predictive coding system. In accordance with the technique, a first synthesized sub-band audio signal is synthesized, wherein synthesizing the first synthesized sub-band audio signal comprises performing waveform extrapolation based on a stored first sub-band decoded audio signal. A second synthesized sub-band audio signal is also synthesized, wherein synthesizing the second synthesized sub-band audio signal comprises performing waveform extrapolation based on the stored second sub-band decoded audio signal. The first synthesized sub-band audio signal and the second synthesized sub-band audio signal are combined to generate a synthesized full-band output audio signal corresponding to a lost frame.

Abstract: Systems and methods that provide channel-adaptive antenna selection in multi-antenna-element communication systems are provided. In one embodiment, a method that selects a subset of receive antennas of a receiver to receive a transmitted RF signal may include, for example, one or more of the following: establishing possible subsets of the receive antennas; determining sets of channel parameter statistics corresponding to the possible subsets of the receive antennas; computing output bit error rates of the receiver, each output bit error rate being computed based on at least one set of channel parameter statistics; selecting a particular possible subset of the receive antennas based upon a criterion predicated on the computed output bit error rates; and connecting one or more RF chains of the receiver to the receive antennas of the selected particular possible subset.

Abstract: Provided is an architecture (hardware implementation) for an authentication engine to increase the speed at which multi-loop and/or multi-round authentication algorithms may be performed on data packets transmitted over a computer network. Authentication engines in accordance with the present invention apply a variety of techniques that may include, in various applications, collapsing two multi-round authentication algorithm (e.g., SHA1 or MD5 or variants) processing rounds into one; reducing operational overhead by scheduling the additions required by a multi-round authentication algorithm in such a matter as to reduce the overall critical timing path (“hiding the ads”); and, for a multi-loop (e.g., HMAC) variant of a multi-round authentication algorithm, pipelining the inner and outer loops.

Abstract: A system and method for accelerated performance of quadrature amplitude modulation (QAM) is provided. The system includes multiple general purpose registers and multiple execution units configured to decode a set of QAM tones in parallel or an individual QAM tone in response to a single instruction executable by the processor. Each of the plurality of execution units is configured to decode one of the set of QAM tones according to a constellation size associated with the one of the set of QAM tones. The QAM decoding method includes reading a constellation size value for each of a set of received input tones. For each tone in the set of input tones, an ideal point in a QAM constellation of the associated constellation size closest to the X and Y coordinates of the tone is determined. The data values of the ideal points are then stored in a destination register.

Abstract: An embodiment of the present invention provides a system comprising a summing device and first amplifier portion. The summing device is coupled to an output node. The first amplifier portion is coupled between an input node and the summing device. The first amplifier portion includes a first amplifier, a first filter, and first and second switches. The first amplifier is coupled between the input node and the summing device on a first path. The first filter is coupled between the input node and the first amplifier on a second path, the second path being in parallel to the first path. The first switch is coupled between the input node and the first amplifier along the first path. The second switch is coupled between the input node and the first filter along the second path.

Abstract: The present invention is directed to a network device, method and apparatus for processing data. The present invention includes at least one ingress module for performing switching functions on incoming data. The invention further includes a memory management unit (MMU) for storing the incoming data, and at least one egress module for transmitting the incoming data to at least one egress port. Further, in the present invention, the memory management unit further comprises a cell copy count pool (CCP) memory, wherein the CCP determines when a memory cell can be made available.

Abstract: A method comprises determining whether a received signal is a first type or second type. The first type of the received signal is low pass filtered. The second type of the received signal is high pass filtered. In one example, the first type of signal is a MoCA signal and the second type of signal is a cable signal. Also, a system includes a reconfigurable filter, a signal determining device, and a control device. The signal determining device is configured to determine if an input signal is a cable signal or a MoCA signal. The control device is configured to arrange the reconfigurable filter as a high pass filter if the input signal is a cable signal and to arrange the reconfigurable filter as a low pass filter if the input signal is a MoCA signal.

Abstract: A device includes a first section, a second section, a hinge section, an antenna, a radiowave transceiver section, and a waveguide assembly. The hinge section couples the first section to the second section and allows the first section to be pivoted with respect to the second section. The antenna is located within the first section and the radio wave transceiver section is located in the second section. The waveguide assembly provides coupling through at least a portion of the first section, at least a portion of the second section, and the hinge section such that the antenna is electrically coupled to the radio wave transceiver section.

Abstract: Preamble and header bit allocation for power savings within multiple user, multiple access, and/or MIMO wireless communications. Within a multi-user packet, information (e.g., partial address information) related to a recipient group of wireless communication devices (e.g., as few as one wireless communication device or any subset of a number of wireless communication devices, sometimes including all of the wireless communication devices) is emplaced within a PHY (e.g., physical layer) header of such a multi-user packet to be communicated within a multi-user (MU) environment. Such recipient indicating information can be encoded with relatively higher robustness (e.g., lower coding rates, lower ordered modulation, cyclic redundancy check (CRC), etc.) that remaining portions of the multi-user packet. Various portions of the remainder of the multi-user packet may respectively correspond to different wireless communication devices (e.g.