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| Number | Title | Issue Date |
| 7675964 | Method for transmitting a plurality of information symbols A plurality of information symbols are transmitted by a carrier wave by assigning different modulation indices to the individual information symbols. Thereby the modulated carrier wave carries information not only by the digitally encoded (modulated) data words but ... | 03/09/2010 |
| 7675965 | System and method of communication via embedded modulation A single subscriber line multi-point communication system is disclosed. In general, the multi-point communication system can include a first transceiver coupled to a subscriber line capable of transmitting and receiving at least two modulation methods, either of sai... | 03/09/2010 |
| 7672362 | Communications apparatus, communications system, and communications method A communications apparatus which ensures a predetermined communication quality even when an external environment changes dynamically, and enhances a throughput for overall system, thereby achieving favorable transmission efficiency. A communications apparatus having... | 03/02/2010 |
| 7668230 | Non-intrusive digital subscriber line transmit adjustment method In one embodiment, a first device for communicating over a digital-subscriber-line (DSL) line comprises a digital-subscriber-line transceiver to transmit and receive data over the DSL link. A set of one or more performance parameters are associated with the DSL link... | 02/23/2010 |
| 7649928 | Method for synchronizing seamless rate adaptation A Discrete Multitone Modulation (DMT) system and method with the capability to adapt the system bit rate on-line in a seamless manner. The DMT system provides a robust and fast protocol for completing this seamless rate adaptation. The DMT system also provides a fra... | 01/19/2010 |
| 7639734 | Ultra-narrow bandwidth radio frequency communications link The present invention is a dramatically enhanced RF link for low-data-rate applications (1-100 bps), using one or more transmitters to communicate with one or more receivers, at dramatically enhanced ranges. The receiver of the present invention can rapidly search, ... | 12/29/2009 |
| 7633997 | Digital data exchange device in a CDMA system The invention relates to a device for exchanging digital data between several sources and at least one hub in a CDMA system, characterised in that it comprises a number n of digital transmission/reception circuits (1) installed in parallel, each circuit (1... | 12/15/2009 |
| 7630431 | Robust message decoder for serial bus applications A data message decoder for high-speed serial bus applications includes a sync pattern decoder that is operated in parallel and simultaneously with a message bit decoder. By operating the sync pattern decoder and the message bit decoder in parallel and simultaneously... | 12/08/2009 |
| RE41001 | Communication system At the transmitter side, carrier waves are modulated according to an input signal for producing relevant signal points in a signal space diagram. The input signal is divided into, two, first and second, data streams. The signal points are divided into signal point g... | 11/24/2009 |
| 7623567 | Method for transmitting data for controlling railway signal installations of a railway system A method for controlling railway signal installations of a railway system by exchanging data between directly adjacent transceivers over electrically conducting rails of a track is disclosed. More particularly, the method allows bidirectional data exchange between t... | 11/24/2009 |
| 7613233 | Method and controller for controlling communication resources A method, an arrangement and a controller are provided for controlling communication resources, such as spatial and temporal communication resources of a telecommunications system. A performance measure characterizing a communication channel between a first transcei... | 11/03/2009 |
| 7613234 | Near-end, far-end and echo cancellers in a multi-channel transceiver system A transceiver according to the present invention receives data from a plurality of frequency separated transmission channels from a complementary transmitter and includes an interference filter for correcting for interference from transmitters other than the complem... | 11/03/2009 |
| 7602842 | Digital signal transmission system In a system for transmitting digital signals between two equipment units of a mobile radio network in accordance with a digital transmission protocol, the equipment units are interconnected by an analog link. The system includes digital-analog converters for convert... | 10/13/2009 |
| 7599427 | Micro range radio frequency (RF) communications link A micro range RF data transmission system comprising at least one transmitter incorporated in a moving device and at least one receiver positioned along a fixed path that can be aligned to create a data transfer point. The moving device moves along a fixed path. Eac... | 10/06/2009 |
| 7599428 | Frequency-division multiplexing transceiver apparatus and method A frequency-division multiplexing transmission apparatus that transmits data at a frequency spectrum specific to a mobile station in which a π/4-continuous-phase-rotation unit performs phase rotation that increases in increments of π/4 or decreases in decrements o... | 10/06/2009 |
| 7593457 | Transceiver system and method having a transmit clock signal phase that is phase-locked with a receive clock signal phase A transceiver system is disclosed that includes a plurality of transceiver chips. Each transceiver chip includes one or more SERDES cores. Each SERDES core includes one or more SERDES lanes. Each SERDES lane includes a receive channel and a transmit channel. The tra... | 09/22/2009 |
| 7590168 | Low complexity high-speed communications transceiver A communication system is disclosed that allows high data-rate transmission of data between components. N-bit parallel data is transmitted in K-frequency separated channels on the transmission medium so as to fully take advantage of the overall bandwidth of the tran... | 09/15/2009 |
| 7583724 | Low-power mixed-mode echo/crosstalk cancellation in wireline communications A signal processing system includes an AGC and pre-echo cancellation system for receiving an analog signal, amplifying signal magnitude (over all frequencies) to a pre-determined level by AGC, and removing the immediate transmit pulse from this received signal by pr... | 09/01/2009 |
| 7583725 | Dynamically reconfigurable adaptive communication device and system Method and apparatus for transmission of information is described. A first transceiver has transmitter reconfigurable logic and a second transceiver has receiver reconfigurable logic. The first transceiver communicates with the second transceiver via a communication... | 09/01/2009 |
| 7570685 | System, method and apparatus for crosstalk cancellation The present invention effectively cancels echo, near-end crosstalk and far-end crosstalk. A FEXT canceller is placed at the transmitter rather than at the receiver according to an aspect of the invention. In some embodiment, a FEXT canceller can be placed at the rec... | 08/04/2009 |
| 7567612 | SDMA communications with non-immediate block acknowledgment In Spatial Division Multiple Access (SDMA) communications, mobile devices that are transmitting to a base substantially simultaneously during a predetermined communications phase may wait until after an end of the predetermined communications phase to receive acknow... | 07/28/2009 |
| 7567610 | Frequency conversion circuit, radio frequency wave receiver, and radio frequency transceiver A frequency conversion circuit of the present invention includes: (i) a first mixer for mixing the radio frequency signal having a frequency fRF with a first oscillation signal having a frequency fLO1 so that the radio frequency signal is downc... | 07/28/2009 |
| 7567611 | Compensation of I-Q imbalance in digital transceivers A transceiver includes a switching unit configurable for isolating an input of a receiver from an output of a transmitter during a local calibration mode. A known signal present at the output at a first power level during the calibration mode will also be present at... | 07/28/2009 |
| 7564893 | Test system and method for parallel modulation error measurement of transceivers A test system is capable of performing parallel modulation error measurement of transceivers using a loop-back configuration. Each transceiver includes a transmitter and a receiver. A signal generator generates a first modulated signal for input to the receivers of ... | 07/21/2009 |
| 7564894 | Tables for determining the signal strength of a received signal in a fibre optics transceiver A transceiver that includes a receiver configured to receive a data signal, a controller, a first memory that includes a first table associated with a first set of gain values and a second table associated with a second set of gain values, and a second memory access... | 07/21/2009 |
| 7551666 | Wireless communications system and wireless digital receiver for use therein A base station 2 demodulates a wireless signal after downconverting the signal to a low-frequency signal whose center frequency is fi [Hz] and oversampling the signal. A mobile station 3 demodulates a wireless signal after downconverting the signal to ... | 06/23/2009 |
| 7545855 | Phase shifter and current mode mixer An integrated circuit radio transceiver comprises an integrated phase shift mixer for generating a phase and frequency shifted output signal to at least a portion of one of a transmitter or receiver front end. The integrated phase shift mixer includes a phase shift ... | 06/09/2009 |
| 7545856 | Current mode phase shifter, mixer and amplifier An integrated circuit radio transceiver includes a phase shift block that is operable to produce a phase shifted current signal at an output of the phase shift block and a mixer with a low input impedance that is operable to produce a phase and frequency shifted out... | 06/09/2009 |
| 7539242 | Semiconductor integrated circuit device and method of testing the same A semiconductor integrated circuit device has first and second receivers and first and second transmitters. The first receiver has a first clock data recovery (CDR) circuit, and the second receiver has a second CDR circuit. Each of these first and second CDR circuit... | 05/26/2009 |
| 7526018 | Multi-standard transceiver for supporting wireless communications in 2.3-2.4 GHz band Disclosed herein is a multi-standard transceiver for supporting a plurality of time division deplexing wireless communication standards. The multi-standard transceiver has a Multi-Mode Modem (MMM), a frequency synthesizing unit, a transmission unit, a reception unit... | 04/28/2009 |
| 7522659 | Universal serial bus (USB) 2.0 legacy full speed and low speed (FS/LS) mode driver A Universal Serial Bus (USB) 2.0 transceiver includes a legacy full speed and low speed (FS/LS) USB driver that includes multiple output stages. The multiple output stages are connected in parallel to an output terminal. By sequentially providing the USB data to the... | 04/21/2009 |
| 7522657 | Throughput maximization in wireless communication systems A communication method comprising characterizing a communications channel, determining a data rate and optionally a power allocation strategy that maximizes channel throughput, and configuring a transmitter to send a transmit signal with said data rate and said opti... | 04/21/2009 |
| 7522658 | Design method and implementation of optimal linear IIR equalizers for RF transceivers A digital filter with equalizers and a corresponding method for optimizing a linear equalizer of an RF transceiver determining filter characteristics of the specified analog filter, determining total signal filtering of the RF transceiver based upon a discrete time ... | 04/21/2009 |
| RE40701 | Communication system At the transmitter side, carrier waves are modulated according to an input signal for producing relevant signal points in a signal space diagram. The input signal is divided into, two, first and second, data streams. The signal points are divided into signal point g... | 04/14/2009 |
| 7502408 | RF transceiver having adaptive modulation A modulation control module for use in an RF transceiver, the modulation control module includes a processing module and memory. The memory is operably coupled to the processing module, wherein the memory stores operational instructions that causes the processing mo... | 03/10/2009 |
| 7499486 | Data transmission rate adaptation in a wireless communication system In a wireless system comprising at least one transceiver configurable for communication over a wireless communication channel, the transceiver comprising a transmitter and a receiver, a method for controlling a data transmission rate of the at least one transceiver ... | 03/03/2009 |
| 7496133 | Multi-rate on-chip OCN filter for a transceiver system An apparatus and method are disclosed to aid a transceiver chip, in a wide-band serial data communications system, in receiving data at multiple data rates. A multi-rate filter within the transceiver chip is implemented as at least one adjustable-rate filter stage a... | 02/24/2009 |
| 7492812 | RFID transceiver device An RFID transceiver device is capable of high sensitivity reception, by the reduction of noise, irrespective of the distance to the tag. The RFID transceiver device includes a delay circuit between a local oscillation circuit and a demodulation circuit, wherein the ... | 02/17/2009 |
| 7486720 | Training frames for MIMO stations A method transmits training frames in a MIMO system. A long sequence of training frames is transmitted from a station B to a station A via a channel of the MIMO system, in which the station A includes NA antennas and NA— | 02/03/2009 |
| 7486721 | Physical layer device having an analog serdes pass through mode A physical layer device (PLD) includes a first serializer-deserializer (SERDES) device and a second SERDES device. Each SERDES device includes an analog portion with a serial port that is configured to communicate serial data with various network devices, and a digi... | 02/03/2009 |