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"Rail travel at high speeds is not possible because passengers, unable to breathe, would die of asphyxia."
Dionysius Lardner, Professor of Natural Philosophy and Astronomy at University College, London ; 1830
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| Number | Title | Issue Date |
| 8111738 | Method and transceiver system 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... | 02/07/2012 |
| 8107514 | Decoding method for space-time encoding transmission scheme in with multiple input multiple output system and receiving apparatus for using the method A receiver according to an exemplary embodiment of the present invention receives a transmitted signal, converts the signal to a predetermined symbol, and estimates channel information including a channel gain of a channel of the transmitted signal. In addition, the... | 01/31/2012 |
| 8102901 | Techniques to manage wireless connections A system, apparatus, method and article to manage wireless connections are described. The apparatus may include a connection management module to automatically form a first connection between a first mobile device and a second mobile device, and a second connection ... | 01/24/2012 |
| 8077761 | Data transmission and reception module, and method of adjusting reception threshold value thereof Disclosed is a method of adjusting a reception threshold value in data reception. The method comprises: generating a transmission signal on the basis of a clock regenerated from a reception signal, determining a worst phase at which a bit error rate becomes maximum ... | 12/13/2011 |
| 8077762 | PHY control module for a multi-pair gigabit transceiver A method for controlling operation of a multi-pair gigabit transceiver. The multi-pair gigabit transceiver comprises a Physical Layer Control module (PHY Control), a Physical Coding Sublayer module (PCS) and a Digital Signal Processing module (DSP). The PHY Control ... | 12/13/2011 |
| 8073040 | Serial communications control plane with optional features A serial communications protocol is provided that has mandatory features such as an idle code feature and optional features such as an optional automatic lane polarity reversal feature and an optional automatic lane order reversal feature, an optional clock toleranc... | 12/06/2011 |
| 8068536 | Orthogonal frequency division multiplexing (OFDM) digital radio frequency (RF) transceiver A digital radio frequency (RF) transceiver circuit comprises circuitry that is adapted to select between a transmitter input signal (148) and a receiver input signal. A plurality of filters are adapted to receive either the transmitter input signal or the rec... | 11/29/2011 |
| 8068537 | Communication circuit for a bi-directional data transmission A communication circuit for providing a bi-directional data transmission over a signal line, thereby receiving a first digital data stream and transmitting a corresponding first signal into a near end of a signal line to a remote device, the remote device being conn... | 11/29/2011 |
| 8064502 | Wireless communication apparatus, wireless communication method, and computer program A wireless communication apparatus compensates for phase and amplitude imbalances existing among transmit and receive branches, while also preventing likelihood information and SNR estimation error produced by such imbalance compensation. In an apparatus having a pl... | 11/22/2011 |
| 8064501 | Method and apparatus for generating a periodic training signal In a method for generating a periodic training signal comprising cyclically expanded training symbols for a transceiver which transmits data via a data transmission channel using a predetermined number N of modulated carrier signals an address pointer for addressing... | 11/22/2011 |
| 8054871 | Semiconductor device and semiconductor integrated circuit A semiconductor device including a pair of stacked semiconductor ICs capable of communicating with each other by wireless. Each IC has: a transmitter circuit operable to send, by wireless, transmit data together with a clock signal deciding a transmission timing, an... | 11/08/2011 |
| 8054868 | UWB transmitting/receiving apparatus, UWB transmitting/receiving terminal apparatus, and UWB transmitting/receiving system A UWB transmitting/receiving apparatus, a UWB transmitting/receiving terminal apparatus and a UWB transmitting/receiving system wherein a possibly reduced number of data retransmissions is achieved so as to raise the transmission efficiency. A UWB transmitting/recei... | 11/08/2011 |
| 8054870 | System for transmitting information data from a transmitter to a receiver over a nested block channel The present invention concerns a system for transmitting information data from a transmitter to a receiver over nested block channel, the transmitter (TRD) comprising an encoder (ENC) following an error correcting code structure, the receiver (RCV) comprising a deco... | 11/08/2011 |
| 8054869 | Reduced complexity frequency band and virtual antenna combination (VAC) selection A downlink Channel Quality Indicator (CQI) is estimated in two steps. Initially, one or more subsets of received reference symbols are selected. If the transmitter may transmit signals in one or more of two or more frequency bands, optimal frequency bands are select... | 11/08/2011 |
| 8050312 | System and method for multi-source communications A system and method of multi-source communications, including a source provider, a transmitter, a receiver, a summing device, a plurality of delay devices, and a switch. The source provider provides a signal including a first and second signal. The transmitter is in... | 11/01/2011 |
| 8050314 | Apparatus and method for wireless communication, and computer program A wireless communication apparatus includes a plurality of antenna branches for transmitting and receiving a wireless communication signal, a calibration coefficient calculator for calculating a calibration coefficient for each frequency band, the calibration coeffi... | 11/01/2011 |
| 8050313 | Single chip low power fully integrated 802.15.4 radio platform A single chip radio platform is disclosed for communicating with an RF channel. An RF front end is provided having a receive/transmit capability to receive an RF carrier modulated with digital data and convert the data to analog baseband data, and modulate an RF car... | 11/01/2011 |
| 8045601 | 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... | 10/25/2011 |
| 8036258 | Method and system for increasing transmission speed of wired or wireless signals while minimizing the bit error rate A communication system is provided which offers increased transmission speed while maintaining a low bit error rate. At the transmitter, a digital input is entered and a microprocessor determines from a particular subset of pulse sequence codes a single sequence of ... | 10/11/2011 |
| 8036259 | Interactive wireless communication device A first communication apparatus sequentially generates a pulse sequence having pulse signals arranged based on the UWB communication system, performs a framing process to form a frame having at least a preamble and a data portion on the generated pulse sequence and ... | 10/11/2011 |
| 8027376 | Method and system for measuring IQ path mismatch Aspects for measuring IQ path mismatch in signal modulation are described. The aspects include estimating a transmitter IQ mismatch in a form of gain and phase response for transmitter I and Q paths sharing a receiver path, and estimating a receiver IQ mismatch in a... | 09/27/2011 |
| 8023556 | Autonomously generating ramp profiles in a transceiver In one implementation, a method includes receiving control information in a transceiver from a baseband processor and computing ramp values in the transceiver based on the control information. The ramp values may be computed in a signal generator of the transceiver ... | 09/20/2011 |
| 8023557 | Hardware synchronizer for 802.15.4 radio to minimize processing power consumption A method is disclosed for controlling the operation of a low power radio platform that realizes the physical layer (PHY) with a software portion and an analog front end, the analog front end disposed between the DSP and an antenna, and realizes the MAC layer with a ... | 09/20/2011 |
| 8014439 | Communication device and communication method A communication device selects an optimal modulation method even when a propagation path condition is changed. In the communication device, a second communication device has a transmission path condition estimation unit for estimating the propagation path condition ... | 09/06/2011 |
| RE42643 | 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... | 08/23/2011 |
| 8005130 | Transmitter and receiver using forward clock overlaying link information A transmitting and receiving technique in which a load on data signal lines is reduced while maintaining a communication quality, thereby making it possible to improve the throughput of data channels. In a transceiver, a transmitter side has an encoder circuit that ... | 08/23/2011 |
| 7995642 | Precoding signaling in a MIMO wireless communication system A method for performing data transmission between a transmitter and a receiver. The method includes the steps of generating a feedback message at the receiver in response to data received from the transmitter, assigning an identifier for the feedback message, storin... | 08/09/2011 |
| 7995643 | Electronic apparatus and unit utilized in electronic system A printer apparatus generates a fixed-length packet by appending a termination identifier for representing a termination point of sub-data. The printer apparatus transmits the packet to a unit. Upon receiving the packet, the unit detects burst error based upon the t... | 08/09/2011 |
| 7986726 | CMOS transceiver for communication system A direct conversion ultrawideband transceiver employing three phase locked loops (PLLs). The PLLs are preferably fixed-frequency PLLs that operate continuously, at different frequencies, with a selected frequency determined by selecting the output of one of the thre... | 07/26/2011 |
| 7983328 | Data transmission device A data transmission device for sending back data on a reflected wave of an unmodulated carrier, the data transmission device includes: an antenna adapted to receive an unmodulated carrier Fo from a data reader with which data is to be exchanged and send a reflected ... | 07/19/2011 |
| 7983327 | Method and system for providing digital adaptive predistortion in a subscriber station A method for providing digital adaptive predistortion in a subscriber station is provided that includes applying predistortion, based on a set of predistortion characteristics, to a transmit signal to generate a predistorted signal. An amplifier input signal is gene... | 07/19/2011 |
| 7983329 | Communication apparatus and method of controlling same A communication apparatus including a noise eliminator performing noise reduction processing to cancel a digitized signal received via a receiving antenna, a code decoder, connected to the last stage of the noise eliminator, that decodes the digitized signal that ha... | 07/19/2011 |
| 7983326 | Digital transmission system and its transmission status recognition method A digital transmission system of a type in which a digitally-modulated transmission signal is mapped to two-dimensional data and transmitted from at least one relay point, and at a reception side, the two-dimensional data is identified and reproduced into the transm... | 07/19/2011 |
| 7978753 | Multicarrier transmission system with low power sleep mode and rapid-on capability A multicarrier transceiver is provided with a sleep mode in which it idles with reduced power consumption when it is not needed to transmit or receive data. The full transmission and reception capabilities of the transceiver are quickly restored when needed, without... | 07/12/2011 |
| 7970044 | Soft chip modem A system and method that provides a user multiple, simultaneous uses of a single analog line. The system comprises a modem, wherein the modem compresses a signal traveling through the analog line. The modem provides simultaneous transmission of two or more speech or... | 06/28/2011 |
| 7957456 | Selection of filter coefficients for tranceiver non-linearity signal cancellation Embodiments of a method and apparatus for selecting coefficients of a non-linear filter are disclosed. The non-linear filter receives a transmit signal and generates a non-linear replica signal of a transmit DAC of a transceiver. The method include applying a plural... | 06/07/2011 |
| 7933317 | Method for transmitting UWB pulse sequences in a cost-efficient manner A telecommunications transmitting device, including: an encoder configured to generate an initial signal formed by at least one reference sequence including an initial integer number of pulses dispatched over a same integer number of time windows; a transmitter conf... | 04/26/2011 |
| 7929594 | Semiconductor integrated circuit and radio communication apparatus for communication A total power consumption of a radio communication apparatus is reduced, the radio communication apparatus including a semiconductor integrated circuit (high-frequency IC) which has a clock generation circuit which generates a reference clock signal for use in modul... | 04/19/2011 |
| 7916774 | Method and system for estimating channel of a mobile station in a communication system A method of estimating a channel between a desired Mobile Station (MS) and a Base Transceiver Station (BTS) antenna of a one of a plurality of sectors of a BTS. The method includes receiving a composite signal at the BTS antenna. The composite signal comprises a des... | 03/29/2011 |
| 7912115 | Method and system for processing reference signals in OFDM systems using transmission time interval groupings A method and system processes reference signals (115) for an uplink channel (103) between a transmitter, such as user equipment, and a receiver such as a base station, in a wireless communication network. A sequence of symbols to be transmitted is conv... | 03/22/2011 |
