Abstract: The present invention discloses a data storage system in a communication network, which enables distributed storage of data. The system includes front end nodes, storage nodes, super nodes and management nodes. The operation units are located in the front end nodes, the super nodes or the storage nodes and each adapted to operate a first data GUID by a preset fixed offset to derive a second data GUID, to determine, from loop link information obtained from the management node and the second data GUID, a super node with a node identifier closest to the second data GUID, and to forward a service request carrying the second data GUID and a backup flag to the determined super node. The invention further discloses a data information processing method using the system.

Abstract: Packet processing logic of a host system's virtualization manager detects packets on the ingress or the egress path to/from a virtual port having three bitmap arrays for processing packets within a virtual local area network (VLAN). The logic checks the VLAN identifier (VID) of the packet to determine, based on an offset position within the corresponding bitmap array, whether the port supports the VLAN. Both the ingress array offset position and egress array offset positions correspond to the value of the VID, and are set within the specific bitmap array during configuration of the VLAN on the port. When the VLAN is supported by the port, the logic enables the packet to be processed by the port. Otherwise, the logic discards the packet. A strip bitmap array indicates when a packet's VID should be removed prior to forwarding the packet on the egress of a port (or destination port).

Abstract: A virtual interface having a global address of a physical interface on an Internet side of a gateway is provided in a terminal. An application unit of the terminal transmits a packet to the Internet using the virtual interface. The packet is transferred to the gateway through a downlink transfer path. The gateway transmits the packet from the physical interface on the Internet side to the Internet.

Abstract: A method for transmitting and receiving a message is provided. The method includes steps of providing a bridge device having a bridge hardware address and a first end, receiving a first message including a first hardware address, a first protocol address and a second protocol address from the first end, recording the first hardware address and the first protocol address on a table, replacing the first hardware address with the bridge hardware address, transmitting the first message to a second end having a second hardware address corresponding to the second protocol address; transmitting a second message including the first protocol address, the second protocol address, the bridge hardware address, and the second hardware address from the second end to the bridge device, replacing the bridge hardware address with the first hardware address according to the table; and transmitting the second message to the first end.

Abstract: Managing data in a server system includes providing a plurality of servers, each having an internal gateway/switch that is accessible from outside the server, providing a plurality of virtual servers on at least some of the servers, where each of the virtual servers is accessible by the internal gateway/switch of the corresponding server, and accessing the data using the internal gateway/switch, where the internal gateway/switch determines which particular one of the virtual servers contain the data and then accesses the particular virtual server to provide the data. Managing data in a server system may also include associating portions of the data to tenants of the server system. Each of the servers may maintain a table that correlates tenants with the virtual servers maintained thereby and the internal gateway/switch may use the table to determine which particular one of the virtual servers contains data for a particular tenant.

Abstract: Embodiments of a system that includes a switch and a buffer-management technique for storing signals in the system are described. In this system, data cells are dynamically assigned from a host buffer to at least a subset of switch-ingress buffers in the switch based at least in part on the occupancy of the switch-ingress buffers. This buffer-management technique may reduce the number of switch-ingress buffers relative to the number of input and output ports to the switch, which in turn may overcome the limitations posed by the amount of memory available on chips, thereby facilitating large switches.

Abstract: A method, apparatus and system for modifying a transmit diversity signal comprising receiving at least one input parameter, calculating at least one virtual parameter based on the at least one input parameter, converting the at least one virtual parameter into an actual parameter, and modifying a transmit diversity signal based on the actual parameter. Variations of the invention are possible, including mapping the input parameter to an actual parameter by various methods, for example, quantization, hysteresis and other methods. Embodiments of the invention may include an apparatus adapted to modify a transmit diversity signal comprising a processor to calculate at least one virtual parameter based on at least one input parameter, convert said at least one virtual parameter to an actual parameter, and modify said transmit diversity signal based on said actual parameter.

Abstract: A method and apparatus for transparently transforming a multicast stream is provided. The method includes transforming the multicast stream in a content engine. The multicast stream has a first bandwidth. The content engine receives a request for the multicast stream from a multicast receiver with a second bandwidth availability. Thereafter, the content engine transforms the multicast stream to a multicast stream with a third bandwidth. The third bandwidth is less than or equal to the second bandwidth. The transformed multicast stream is sent to the multicast receiver.

Abstract: A data Interface for transferring digital data between a host and a client over a communication path using packet structures linked together to form a communication protocol for communicating a pre-selected set of digital control and presentation data. The signal protocol is used by link controllers configured to generate, transmit, and receive packets forming the communications protocol, and to form digital data into one or more types of data packets, with at least one residing in the host device and being coupled to the client through the communications path. The interface provides a cost-effective, low power, bi-directional, high-speed data transfer mechanism over a short-range “serial” type data link, which lends itself to implementation with miniature connectors and thin flexible cables which are especially useful in connecting display elements such as wearable micro-displays to portable computers and wireless communication devices.

Abstract: Systems and methods for designing, using, and/or implementing slotted channel access techniques in network communications are described. In some embodiments, a method may include selecting one of a plurality of time slots within a contention access period (CAP), each of the plurality of time slots having a predetermined duration, and transmitting a packet during the selected time slot. For example, the time slot may be selected randomly or based on a round-robin algorithm. In some implementations, the duration of each of the plurality of time slots may correspond and/or be equal to: (a) a duration of a data packet of maximum size, (b) a sum of durations of a request-to-send packet, an interframe space, and a clear-to-send packet, and/or (c) a duration of a guaranteed time slot (GTS) or contention free period (CFP) request packet, as prescribed by a given communication protocol or standard.

Abstract: An apparatus and method of scheduling timing packets to enhance time distribution includes an improved apparatus in a system in which at least one of time and frequency information is derived based on information distributed in timing packets, at least some of the timing packets being transmitted by or received by the apparatus. The improvement includes a scheduling module that determines a first packet transmission time offset of a first timing packet based on a first predetermined identifier associated with the apparatus, and a second packet transmission time offset of a second timing packet based on the first packet transmission time offset and a timing packet spacing that is independent of the first predetermined identifier. The improvement further includes a transmission module that transmits the first timing packet based on the first packet transmission time offset, and the second timing packet based on the second packet transmission time offset.

Abstract: The invention relates to a method for optimized transmission of data between a control device and a plurality of field devices that are connected to one another via an IP-based communications network, wherein the data transmission is controlled using a Profinet protocol. The invention further relates to a control and data transmission installation (10) that is particularly suited to the performance of the method. With the control and data transmission installation (10), it is possible to transmit the data to be transmitted from a control device (20) to a group of field devices (30, 40, 50) in a single sum frame subdivided into data fields, and to transmit the data to be transmitted from a plurality of field devices to a control device likewise in only one common sum frame subdivided into data fields. In this manner, the transmission rate can be optimized with respect to standard Profinet frames.

Abstract: An Ethernet data reassembly apparatus comprises: a data receiving unit, for receiving the data of a gigabit passive optical network frame; a data reassembly unit, for storing the data of the gigabit passive optical network frame into the corresponding location of a data buffer unit, based on the Ethernet data intermediate variable stored in a data reassembly table unit; a data reassembly table unit, for storing the Ethernet data intermediate variable; and a data buffer unit, for storing the data of the gigabit passive optical network frame received by the data receiving unit, to acquire integrated Ethernet data. A method comprises the following steps: receiving the data of a gigabit passive optical network frame; storing the data of the gigabit passive optical network frame into the corresponding location of a data buffer unit, based on the Ethernet data intermediate variable stored in a data reassembly table unit.

Abstract: An information processing apparatus includes a receiving part receiving a packet from a communication line; an arithmetic processing part configured to stop an operation in an energy conservation mode, a filter part configured to allow a response required packet to pass through the filter part; a packet retaining part retaining the packet passing over the filter part; and a power source administrating part activating the arithmetic processing part by supplying electric power when the packet is received by the receiving part, wherein if the packet retaining part retains an incomplete packet at a time of activating the arithmetic processing part, the arithmetic processing part generates a packet information piece associating the incomplete packet and a corresponding complete packet as a list and stores the packet information piece to a list storing part.

Abstract: A method of processing broadcast data in a broadcast transmitter includes performing Reed-Solomon (RS) encoding and Cyclic Redundancy Check (CRC) encoding on mobile service data to build at least one RS frame including the mobile service data and dividing the at least one RS frame into a plurality of portions; dividing each of the plurality of portions into several Serial Concatenated Convolutional Code (SCCC) blocks according to SCCC block mode information, encoding data in the SCCC blocks, and mapping the SCCC blocks including the encoded data to data blocks according to the SCCC block mode information; encoding signaling data including fast information channel (FIC) data and transmission parameter channel (TPC) data; and modulating a broadcast signal including data in the data blocks and the encoded signaling data.

Abstract: A multi-view video coding method includes the following steps: an un-coded group of pictures (GOP) is obtained from an un-coded multi-view video. Wherein, the un-coded GOP includes picture sets of several un-coded views. Several present coding views are selected from the un-coded views according to view levels of the un-coded views. Wherein, picture sets of the present coding views includes several present coding pictures. A target coding picture is selected from the present coding pictures according to view levels of and temporal levels of the present coding pictures. At least a coded reference picture, which is referenced by the target coding picture for prediction, is obtained. The target coding picture is coded according to the coded reference picture. In addition, a multi-view video decoding method is also disclosed.

Abstract: A user terminal in a radio communication system, in which each of user terminals performs multiplexing of a data signal and a pilot signal and transmits the multiplexed signal to a base station using different data transmission band frequencies that are assigned by the base station, the user terminal includes a receiving unit that receives uplink resource information from a base station. A pilot generation unit that generates a pilot signal based on the uplink resource information and a transmitting unit that transmits the pilot signal generated by the pilot generation unit to the base station where the pilot generation unit includes a sequence generation unit that generates a Zadoff-Chu sequence as a pilot signal based on the uplink resource information and a subcarrier mapping unit that performs mapping of a sequence generated by cyclically copying the Zadoff-Chu sequence.

Abstract: A system and method are provided for residence time calculations in a network communications local device. A network interface module in the local device receives a first packet from a network-connected remote device. A timing module in the local device records an arrival time of the first packet with respect to a local reference clock. The timing module tracks adjustments in the local reference clock and records a known departure time, with respect to the local reference clock, of when the first packet will be transmitted from the network interface. The timing module adds a residence time field to the first packet representing the difference between the arrival and departure times, taking into account adjustments in the local reference clock.

Abstract: A system and method are provided for synchronizing a programmable timer time base and external time signal. The method either accepts or supplies an external time signal (e.g., IEEE 1588) at an external interface, links a synchronized time base to the external time signal, and clocks a channel time base with the synchronized time base. Then, a timer channel can be used to perform programmable timer functions in response to the channel time base. Some programmable timer functions include input capture, output compare, quadrature decoding, pulse measurement, frequency measurement, and pulse width modulation (PWM) functions, in one aspect, accepting the external time signal at the external interface includes detecting a packet with a time value, in another aspect, the method uses the channel to detect an event at a channel external interface, and compares the channel time base counter value with an expected value to modify the synchronized time base.

Abstract: A network component comprising pre-transmit logic coupled to a transmitter that transmits packets, wherein the pre-transmit logic is configured to determine whether a scrambling sequence for a packet complies with at least a threshold line pattern criteria, and if not, delay transmission of the packet to at least partially offset the scrambling sequence used for the packet, wherein the pre-transmit logic comprises a sequence evaluator that determines whether a scrambled packet complies with at least the threshold line pattern criteria.

Abstract: A tunable laser, including: a laser resonant cavity including first and second total reflection mirrors within a laser spectral range; first and second wavelength-adjustable laser gain mediums disposed in the laser resonant cavity; first and second intra-cavity collimating lenses; an acousto-optic tunable filter; a device exciting sound waves in an acousto-optic crystal and including a sound wave energy transducer bonded on a selected surface of the crystal; a radio frequency signal source; an optical phase modulator; an optical etalon disposed between the optical phase modulator and the laser gain medium; a wavelength locker disposed at one of zero-order diffraction optical paths of intra-cavity light; a pigtailed collimator coupling laser output light to an optical fiber; first and second pumping devices exciting the first and second laser gain mediums respectively; an optical phase modulator driver for driving the phase modulator; and a signal control processing circuit.

Abstract: A tunable laser includes an optical cavity comprising a first and second mirror. A gain medium is positioned in the optical cavity that generates stimulated emission in the optical cavity when biased. A thermally tunable optical filter is positioned in the optical cavity that is heated to a temperature that selects a desired optical mode of the optical cavity. A thermally tunable optical phase retarder is positioned in the optical cavity that is heated to a temperature which changes an optical path length in the optical cavity by an amount corresponding to a resonant frequency of the tunable optical filter so that a phase-matching condition of the optical cavity is shifted to the desired optical mode of the optical cavity selected by the thermally tunable optical filter.

Abstract: Photonic crystal cavities and related devices and methods are described. The described cavities can be used as lasers, photovoltaic sources, and single photon sources. The cavities can be both optically and electrically pumped. A fabrication process of the cavities is also described.

Abstract: An optical scanning device includes a vertical-cavity surface-emitting laser light source that emits laser beams perpendicular to a top surface thereof; a first optical system that couples the beams from the light source; a deflecting unit that deflects the beams; a second optical system that guides the beams from the first optical system to the deflecting unit; a third optical system that focuses the beams deflected by the deflecting unit into an optical spot on a scanned surface; and a light-quantity adjusting element disposed between the light source and the deflecting unit and having a substrate formed of a first and second surfaces. The first surface of the light-quantity adjusting element is coated with neutral density coating and the second surface is coated with antireflection coating so that reflectance of the second surface is made smaller than reflectance of the first surface.

Abstract: The present disclosure relates to an optical power monitoring circuit including an automatic power control (APC) loop and a microcontroller unit (MCU), and a method for monitoring the same. The APC loop comprises a laser diode (LD) and a feedback loop to maintain a laser optical power. The MCU is configured to (i) monitor a bias current using a current sense circuit, (ii) monitor a rate of change of the bias current with time, and (iii) adjust a target power of the APC loop. By monitoring the bias current and the rate of change, and comparing them against thresholds, the target power can be adjusted by the MCU, to prevent roll-over in the laser diode, damage to the laser, and/or a hard failure in the data links that use the laser.

Abstract: The present invention relates to an apparatus comprising a diode laser (10) providing radiation in a first wavelength interval, a radiation conversion unit (12) having an input and an output, the radiation converter configured to receive the radiation in the first wavelength interval from the diode laser at the input, the radiation conversion unit configured to convert the radiation in the first wavelength interval to radiation in a second wavelength interval and the output configured to output the converted radiation, the second wavelength interval having one end point outside the first wavelength interval.

Abstract: Singlet oxygen metastables can be formed. A catalytic coating is formed on an interior surface of a flow reactor, and an oxygen containing species is flowed into the flow reactor to produce singlet oxygen metastables by a chemical reaction in the presence of the catalytic coating.

Abstract: A component having a microring resonator and grating, coupled to a waveguide is described. By selection of the grating period, and other parameters such as the grating-waveguide coupling coefficient, an efficient filter may be designed and constructed. The component may be used in passive devices such as add-drop multiplexers or sensors, or in active devices such as lasers. Designs having essentially no response sidelobes, very narrow effective bandwidths, and fast filter roll-offs may permit compact devices to be produced, when compared with typical distributed sampled Bragg grating structures.

Abstract: An apparatus and technique for measuring and coping with interfering signals in a wireless communications system. The apparatus and technique rapidly and regularly measures the signals present in the wireless communication system's band of operation. The apparatus and technique then makes this information available to all the transceivers on the network, so that each transceiver has information the interference other transceivers see, and the system can make intelligent decisions about radio transmission parameters to optimize the network performance.

Abstract: An arrangement (10) for noise rise estimation comprises a front end signal conditioning arrangement (9) and an interference whitener (14) connected thereto. The interference whitener (10) is arranged for providing interference whitening of a front end signal. A processor (20) is arranged for measuring received total wideband power received at the front end signal conditioning arrangement (9) a plurality of times. An estimate of a noise floor measure is computed by the processor (20) based on the measured received total wideband powers. The processor (20) determines an equivalent total wideband power of the output from the interference whitener (14). The processor (20) also calculates a noise rise measure, based on the equivalent total wideband power and the noise floor measure, and compensates the noise rise measure for the interference whitening. A digital receiver (12) is connected to the output from the interference whitener (14).

Abstract: The present invention relates to a communication system comprising a transmitter and receiver in communication for transmitting signals through one or more communications channels, wherein at least one of the transmitter and the receiver each comprise a quality measure, which contributes to an overall quality measure for the system and wherein the or each communications channel comprises a plurality of sub-bands between at least two nodes, wherein the plurality of sub-bands each having a specific maximum power spectral densities (PSDs) and wherein one or more sub-bands between the transmitter and the receiver are identified as having a higher maximum PSD than other sub-bands and wherein the PSD of the one or more identified sub-bands is reduced in a predetermined manner to thereby increase the overall quality measure for the system.

Abstract: A generated code amount accumulation part adds up the amounts of generated codes of pictures in 1 GOP which are encoded up to the current stage. An upper limit code amount accumulation part adds up the upper limit amounts of codes of the pictures in the 1 GOP which are encoded up to the current stage. A transmission load of an image transmission system is taken into consideration in the setting of the upper limit amount of codes. An update ratio setting part outputs an update instruction to lower a target rate when the accumulated amount of generated codes exceeds the accumulated upper limit amount of codes. The update ratio setting part does not output the update instruction for lowering the target rate when the accumulated amount of generated codes does not exceed the accumulated upper limit amount of codes. A transcoder can predict whether or not there is a possibility that the load of transmitting image data will increase while each picture in 1 GOP is encoded.

Abstract: A system and method for dynamic profile management in a cable modem termination system (CMTS) is provided. A CMTS receiver is in communications with a plurality of cable modems, and a dynamic profile management module is in communication with the CMTS receiver. The dynamic profile management module establishes a communications profile for an upstream channel used by the CMTS receiver and at least one of the plurality of cable modems (the communications profile including a plurality of parameters associated with the upstream channel), continuously monitors performance metrics associated with communications across the upstream channel, and automatically adjusts the plurality of parameters of the communications profile in response to the monitored performance metrics.

Abstract: A picture coding method of the present invention codes a picture signal and a ratio of a number of luminance pixels and a number of chrominance pixels for the picture signal, and then one coding method out of at least two coding methods is selected depending on the ratio. Next, data related to a picture size is coded in accordance with the selected coding method. The data related to the picture size indicates a size of the picture corresponding to the picture signal or an output area, which is a pixel area to be outputted in decoding in a whole pixel area coded in the picture signal coding.

Abstract: A method and apparatus are provided for motion estimation in a sequence of images. One or more motion vectors representing movement of a camera or viewer position or direction are determined between each pair of fields or frames in the sequence of images. A set of candidate motion vectors is then determined for deriving positions of objects in a field or frame from the positions of objects in a previous field or frame. This set of candidate motion vectors is adjusted using the motion vectors representing movement of the camera or viewer position and thus a set of motion vectors is derived for a sequence of images using the adjusted set of candidate motion vectors.

Abstract: A method and apparatus for selecting a coding mode are described. For example, the method receives at least one block of a signal to be encoded. The method determines a frame vertical pixel difference in the at least one block and determines a field vertical pixel difference in the at least one block. The method then compares the frame vertical pixel difference with the field vertical pixel difference to determine a first coding mode for the at least one block.

Abstract: A coding method, apparatus, and medium with software encoded thereon to implement a coding method. The coding method includes encoding the position of non-zero-valued coefficients in an ordered series of quantized transform coefficients of a block of image data, including encoding events using variable length coding using a plurality of variable length code mappings that each maps events to codewords, the position encoding including switching between the code mappings based on the context. The coding method further includes encoding amplitudes of the non-zero-valued coefficients using variable dimensional amplitude coding in the reverse order of the original ordering of the series.

Abstract: The invention relates to a method for buffering multimedia information, wherein a parameter is defined indicative of the maximum amount of transmission units comprising multimedia data that precede any transmission unit comprising multimedia data in the packet stream in transmission unit transmission order and follow the transmission unit comprising multimedia data in decoding order. The invention also relates to a system, a transmitting device, a receiving device, a computer program product, a signal and a module.

Abstract: A system that incorporates teachings of the present disclosure may include, for example, a media processor having a controller to allocate between a video and audio quality in an Internet Protocol Television (IPTV) presentation and to utilize a resultant bandwidth as a result of allocation to enhance an audio or video quality in the IPTV presentation in response to a user selection among levels of video quality and audio quality. Other embodiments are disclosed.

Abstract: In video encoding and decoding predictions may be generated by intra-frame prediction. Intra-frame prediction uses reconstructed pixels in a reconstructed frame. Intra-frame prediction is performed by extending the reconstructed pixels into a predicted block using intra-frame prediction modes, each intra-frame prediction mode indicating a direction of the extension. In order to reduce the number of possible intra-frame prediction modes, a subset is selected from a predetermined set of possible intra-frame prediction modes. A subset of intra-frame prediction modes can be created by forming preselection sets of intra-frame prediction modes on the basis of similarity of their associated predicted blocks and selecting a representative intra-frame prediction mode from each preselection set.

Abstract: Aspects of the present invention relate to systems and methods for picture up-sampling using direct interpolation. Some aspects of the present invention provide an up-sampling procedure designed for the Scalable Video Coding extension of H.264/MPEG-4 AVC.

Abstract: A signal transmission apparatus that transmits a 1-bit signal obtained by delta-sigma modulation is provided. In the signal transmission apparatus, a pseudo-random noise pattern having a data rate equal to that of the delta-sigma modulated 1-bit signal is generated, and the 1-bit signal is code-modulated using the generated pseudo-random noise pattern. The generated pseudo-random noise pattern and the code-modulated signal obtained through code modulation are transmitted via a transmission line. The transmitted code-modulated signal is demodulated using the transmitted pseudo-random noise pattern.

Abstract: A device and method for time synchronization in a communication network, wherein a virtual clock is produced by a controller in each network node based on the PROFINET-Standard and/or the Precision Transparent Clock Protocol. In contrast to known methods for estimating the time, the time of the virtual clock does not undergo sudden changes. The virtual clock includes a controlled, continuous path. As a result, the virtual clock is particularly suitable for time-critical applications. Here, the estimation of the time of a reference clock is improved by 18-35%. Accordingly, a markedly greater number of network nodes may be synchronized with a predetermined level of accuracy for the time synchronization.

Abstract: A carrier wave is generated by using a zero-cross point of an AC power source voltage as a reference timing, a data communication device connected to a first power line performs digital modulation with a normal-phase carrier wave, and a data communication device connected to a second power line near the first power line performs digital modulation with an anti-phase carrier wave. In this manner, unwanted radiation caused by a leak radio wave can be reduced while using power lines of two systems in independent data communication.

Abstract: Systems, methods and/or mobile devices are provided that enable a level of privacy/security in wireless communications to be increased responsive to a content of the wireless communications, biometric data and/or a position from which the wireless communications takes place. A plurality of communications modes is used by the system infrastructure and the plurality of mobile devices communicating therewith to increase privacy and undetectability of transmitted signals. The increased level of privacy and undetectability of signals is provided via pseudo-randomly generated signaling alphabets that are used by the mobile devices and by the system infrastructure to provide the communications. This represents a level of encryption/scrambling that is over and above the conventional encryption and/or scrambling at the bit level. Accordingly, systems, methods and/or devices providing a concatenated level of encryption/scrambling are provided.

Abstract: The present invention relates to method of transmitting and receiving signals and a corresponding apparatus. One aspect of the present invention relates to an efficient layer 1 (L1) processing method for a transmitter and a receiver using data slices.

Abstract: Receivers and methods are provided that include multiple modes of processing signals from multiple antennas. These include legacy, SAIC (single antenna interference cancellation) and MSRD. Various methods are provided for selecting an appropriate receiver processing function. These include looking at correlation and gain imbalance between antennas, looking at the processing gain resulting from one or more of the receiver processing functions, and looking at the equalization quality of at least two receiver processing functions.

Abstract: A base station is provided. The base station includes a transmit path circuitry to transmit an uplink grant to a subscriber station, the uplink grant indicating a first modulation and coding scheme (MCS) value for a first codeword transmission and a second MCS value for a second codeword transmission. The base station also includes a receive path circuitry to receive a multiple-input multiple-output (MIMO) uplink subframe from the subscriber station, the MIMO uplink subframe having a first subset of layers used for the first codeword transmission and a second subset of layers used for the second codeword transmission. Acknowledgement/negative acknowledgement (ACK/NACK) information and rank indication (RI) information are mapped onto both the first subset of layers and the second subset of layers. Channel quality information (CQI) is only mapped onto either the first subset of layers or the second subset of layers.

Abstract: A wireless communication receiver improves signal impairment correlation estimation in MIMO/MISO systems by considering different transmit power allocations and different transmit antenna power distributions in its impairment correlation calculations. The receiver may be implemented in according to a variety of architectures, including, but not limited to, Successive Interference Cancellation (SIC) Generalized RAKE (G-RAKE), Joint Detection (JD) G-RAKE, and Minimum Mean Squared Error (MMSE) G-RAKE. Regardless of the particular receiver architecture adopted, the improved impairment correlations may be used to calculate improved (RAKE) signal combining weights and/or improve channel quality estimates for reporting by receivers operating in Wideband CDMA (W-CDMA) systems transmitting HSDPA channels via MIMO or MISO transmitters.

Abstract: A method and apparatus of reducing interference in space frequency block coding (SFBC) communication are disclosed. SFBC encoding is performed on at least one pair of symbols. The symbols are assigned to subcarriers in accordance with a frequency assignment pattern assigned to a cell. Different frequency assignment patterns are assigned to neighboring cells. Cells in the network may be divided into a plurality of groups and a different frequency assignment pattern may be assigned to each group of cells. The frequency assignment pattern may be defined such that subcarriers mapped to a pair of symbols in one cell are interlaced to subcarriers mapped to a pair of symbols in a neighbor cell. Alternatively, the frequency assignment pattern may be defined such that subcarriers mapped to a pair of symbols in one cell are shifted in a neighbor cell.