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| Number | Title | Issue Date |
| 8068574 | Systems, apparatus, and methods for performing digital pre-distortion with feedback signal adjustment In an embodiment, a digital pre-distortion apparatus processes an input signal to produce a pre-distorted signal, and processes the pre-distorted signal to produce a feedback signal. The apparatus also rotates an adjustment gain by a gain rotation angle to produce a... | 11/29/2011 |
| 8000427 | Apparatus and method for low-complexity scheduling in multi-user MIMO system Provided is an apparatus and method for low-complexity scheduling in a multi-user Multi-Input Multi-Output (MIMO) system. In a method for scheduling in a MIMO system, a vector is set on the basis of channel information for all user terminals. A scalar for the vector... | 08/16/2011 |
| 7965803 | Methods and systems for providing feedback for beamforming In some embodiments, methods and systems for providing feedback for beamforming include: initializing a weighting vector; determining a perturbation vector; determining a plurality of weighting vectors to be applied to data based on the weighting vector and the pert... | 06/21/2011 |
| 7953197 | Radio communication base station apparatus, radio communication mobile station apparatus, and radio communication method in multi-carrier communication There is provided a mobile station device capable of effectively performing interference suppression symbol synthesis while suppressing the lowering of the transfer rate when using the repetition technique in multi-carrier communication. In the mobile station device... | 05/31/2011 |
| 7860204 | Digital baseband system Communication device for processing outgoing and incoming packets. The device includes a plurality of signal processing units connected in sequence, each signal processing unit being clocked by a common clock signal. The device further includes a mode line connected... | 12/28/2010 |
| 7839965 | High-speed serial data link with single precision clock source A clock generator is provided for a transmitter in a transceiver adapted to communicate data over a serial data link. The transceiver includes a clock data recovery circuit recovers a receive clock signal and outputs a reference clock signal. The clock generator inc... | 11/23/2010 |
| 7729464 | Aiding synchronization between master and slave transceivers An apparatus and method of aiding synchronization between a master transceiver and a slave transceiver is disclosed. The method includes the master transceiver transmitting data signals that are received by the slave transceiver. The slave transceiver locks a slave ... | 06/01/2010 |
| 7724858 | Techniques to manage latency for multiple receivers Method and apparatus to manage delay for multiple receivers for a wireless system are described. ... | 05/25/2010 |
| 7577222 | Methods and apparatus with logic to determine a relative change relationship between modem and frame clocks Methods and apparatus to determine a relative change relationship between modem and frame clocks are generally described herein. Other embodiments may be described and claimed. ... | 08/18/2009 |
| 7545899 | System and method of phase-locking a transmit clock signal phase with a receive clock signal phase Systems and methods for synchronizing a receive clock signal phase with a transmit clock signal phase are presented. A system includes a receiving channel and a transmitting channel, wherein the transmitting channel synchronizes a transmit clock signal phase with a ... | 06/09/2009 |
| 7499515 | System and method for automated link quality measurement for adaptive modulation systems using noise level estimates A communications system includes a transmitter that transmits a modulated signal having encoded communications data over a communications channel. The transmitter adjusts one of at least modulation and coding at the transmitter based on the received channel state in... | 03/03/2009 |
| 7499513 | Method and apparatus for providing frequency synthesis and phase alignment in an integrated circuit According to particular example embodiments, an integrated circuit includes one or more serializing data transmitters. Each such data transmitter is arranged to transmit data on a respective data output port of the integrated circuit, wherein the respective data out... | 03/03/2009 |
| 7499514 | Communication system, reception apparatus and method, recording medium and program A communication system, reception apparatus and method, recording medium and program are provided. A technique is provided wherein, even where means for synchronizing a reception clock with a transmission clock is not available, data transmitted can be received accu... | 03/03/2009 |
| 7489753 | System and method of phase-locking a transmit clock signal phase with a receive clock signal phase Systems and methods for synchronizing a receive clock signal phase with a transmit clock signal phase are presented. A system includes a receiving channel and a transmitting channel, wherein the transmitting channel synchronizes a transmit clock signal phase with a ... | 02/10/2009 |
| 7440530 | Circuit for and method of optimizing the transmission of data on a communication channel A circuit for optimizing the transmission of data on a communication channel is disclosed. According to one embodiment of the invention, a circuit comprises a transmitter circuit having a programmable output characteristic and being coupled to a transmission media. ... | 10/21/2008 |
| 7418054 | Transmitter adjustment based on transmission statistics A WLAN (Wireless Local Area Network) transmitter or another data communications apparatus is provided that includes a transmission section that is configured to generate signals to be transmitted, and a control section that is connected to the transmission section t... | 08/26/2008 |
| 7400672 | Method and system for detecting transmitter errors A system for detecting transmission errors in a data transmission system includes a receiver for receiving a data packet transmitted thereto by a corresponding transmitter and transmitting the data packet to a destination device and an error detection device for rec... | 07/15/2008 |
| 7398411 | Self-calibrating time code generator Provided is a self-calibrating time code generator and method for generating an accurate time code (e.g., an accurate IRIG waveform). The self-calibrating time code generator includes a phase-locked loop configured to provide a generated output signal based on a pha... | 07/08/2008 |
| 7394857 | Flexible versatile low-cost wireline transmit driver A versatile, programmable, low-cost transmit line driver is provided. The line driver includes a digital-to-analog converter that receives a digital input and provides an analog output. The line driver is reconfigurable between the voltage mode of operation. ... | 07/01/2008 |
| 7395094 | Method and apparatus for synchronizing a smart antenna apparatus with a base station transceiver A method of synchronizing a smart antenna apparatus with a base station transceiver includes receiving at the smart antenna apparatus control signals being communicated from a base station transceiver to one or more mobile stations via an antenna unit. The control s... | 07/01/2008 |
| 7388933 | Wireless communication system having adaptive threshold for timing deviation measurement and method A system and method of wireless communication determines received signal timing deviation which is used to generate a timing advance for adjusting wireless transmit receive unit (WTRU) transmissions. An adaptive threshold for measuring the timing deviation is set ba... | 06/17/2008 |
| 7386079 | Seamless clock System (10) comprising at least two units (1, 2) with clock functionality, the units being coupled to a common system clock line (SCLK), a common internal clock line (ICLK), and a logic bus (L-BUS), whereby one sole unit (1, 2) is being dedicate... | 06/10/2008 |
| 7386277 | Communication system and method for increasing communication efficiency A mobile communication system capable of increasing communication efficiency and a method therefor are provided, including a receiver for grouping n MCS levels (where n>0) into continuous m MCS levels (where n>m>0) according to the quality of a data channel for tran... | 06/10/2008 |
| 7376212 | RF isolator with differential input/output A system for providing voltage isolation includes the first and second chips, each containing functional circuitry. The chips are interconnected via at least one RF isolation link that provides voltage isolation between the first chip and the second chip and limits ... | 05/20/2008 |
| 7372930 | Method to synchronize data and a transmitter and a receiver realizing said method A method to realize synchronization of data (DAT) sent from a transmitter (TX) to the receiver (RX), with a signal (SIG) available in the receiver (RX). The method includes the following steps: in the receiver (RX) generating trigger signals (T) from the signal (SIG... | 05/13/2008 |
| 7372872 | System and method for monitoring upstream and downstream transmissions in cable modern system A network monitor includes means for monitoring downstream traffic from a cable modem termination system (CMTS) to a cable modem (CM), means for monitoring upstream traffic from the CM to the CMTS, and means for identifying a data format used by the CMTS and the CM ... | 05/13/2008 |
| 7369521 | Power control during retransmission The present invention relates to a method and a device for controlling power in a network transmitted from a first station to a second station. The second station determines a power target value for a signal received from the first station and sends power control co... | 05/06/2008 |
| 7362816 | Inversion of channel distortion by adaptive wavelet lifting A method for inverting telecommunication channel distortion by adaptive wavelet lifting. The distortion signal is analyzed using wavelet lifting and the inverse filter is computed. Coefficients of the inverse filter are used to either compute a transmission pre-filt... | 04/22/2008 |
| 7359470 | Minimizing feedback rate for channel state information in MIMO systems A method minimizes a rate for feeding back channel state information from a receiver to a transmitter in a multi-input, multi-output communications systems. A temporal autocorrelation function of the channel between the transmitter and the receiver is determined. A ... | 04/15/2008 |
| 7352715 | Time synchronization using dynamic thresholds Methods and apparatus for time synchronization using dynamic thresholds. A method for synchronizing network elements includes receiving at a network element a time synchronization message sent from a master clock element. The network element includes an internal clo... | 04/01/2008 |
| 7336727 | Generalized m-rank beamformers for MIMO systems using successive quantization The telecommunications system described herein implements a multi-rank beamformer for use in wireless systems equipped with multiple transmit and multiple receive antennas. The multi-rank beamformer uses finite-rate feedback of channel conditions to achieves close t... | 02/26/2008 |
| 7337344 | Methods and apparatus for synchronizing devices on different serial data buses The invention provides a method of synchronizing one or more devices on a first bus with one or more devices on a second bus. The method comprises acquiring timing information from the first bus and the second bus, determining a timing offset between the first bus a... | 02/26/2008 |
| 7336627 | Digital subscriber line transmission method, apparatus and system A digital subscriber line transmission (xDSL) system includes a transmitting side which transmits training symbols by adding some data that is contained in a training symbol sequence onto at least one of the beginning and the end of this symbol sequence and then tra... | 02/26/2008 |
| 7324600 | Channel estimation in a multi carrier transmit diversity system A method and a stage for estimating channel coefficients in a multi carrier system operating in accordance with a block-code based transmit diversity scheme, in which a data content of a code matrix is multiplexed in a frequency domain are described. The method comp... | 01/29/2008 |
| 7317775 | Switched deskew on arbitrary data A method and circuit capable of handling skew between a clock and data signal up to +/− one half bit on a random input data pattern. A digital algorithm cycles through each data bit and individually deskews that bit by detecting data transitions in a first samplin... | 01/08/2008 |
| 7292666 | Time difference adjustment circuit In a first stage, each of level detection circuits compares a transmission signal and a first reference voltage Vr1 to detect a rising edge, and phase difference detection circuits detect phase differences between the level detection circuits. In a second sta... | 11/06/2007 |
| 7289826 | Method and apparatus for beam selection in a smart antenna system A method of beam selection in a smart antenna system is provided. The method includes receiving a plurality of uplink beams by a plurality of receivers, each corresponding with one of the plurality of uplink beams. Each uplink beam includes signals transmitted by a ... | 10/30/2007 |
| 7286624 | Two-way RF ranging system and method for local positioning A positioning system includes a plurality of devices configured to exchange RF signals with one another. A first device periodically receives a message from each other device during time slots assigned them. The received message includes information representing a t... | 10/23/2007 |
| 7275174 | Self-aligning data path converter for multiple clock systems A system and method for aligning an input signal (24) synchronized to a first clock signal (22) with a second clock signal (26) The invention includes a mechanism (106) for generating a third clock signal (354) and an arrangement (... | 09/25/2007 |
| 7266714 | Method an apparatus for adjusting the time of a clock if it is determined that the degree of adjustment is within a limit based on the clocks initial time A free-running secure clock in a computing device that is adjustable by a user of the device so long as cumulative adjustments do not exceed a predicted clock drift. The clock may be initially set by the user or by a trusted time authority or the like. Such a clock ... | 09/04/2007 |
