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| Number | Title | Issue Date |
| 8116402 | Method and system for cognitive radio Systems and methods for cognitive radio are disclosed herein. Specifically, embodiments of the present invention may provide systems, methods and apparatuses for a cognitive radio which is operable to tailor its operation based on one or more criteria, which may per... | 02/14/2012 |
| 8111776 | Pulse insertion systems and methods for polar modulation Systems and methods for bandwidth reduction in polar modulation systems are described. Detection of problematic signal transition paths may performed, and then, dependent on the signal path, a correction signal may be generated and added to the signal to improve sys... | 02/07/2012 |
| 8111777 | Method, apparatus and system for high-speed transmission on fiber optic channel Multi-carrier modulation fiber optic systems constructed using a series of electrical carriers, modulating the data on the electrical carriers and combining the carriers to form a wideband signal. The wideband signal can then be intensity modulated on a laser and co... | 02/07/2012 |
| 8107552 | System and method of wireless communication of uncompressed video having a fast fourier transform-based channel interleaver A system and a method of using fast Fourier transform (FFT) based tone interleaver for OFDM are disclosed. One embodiment of the system includes an OFDM transmitter, which includes an inverse fast Fourier transform (IFFT) subsystem. The IFFT subsystem includes a bit... | 01/31/2012 |
| 8107553 | Crest factor reduction in multicarrier transmission schemes A multicarrier transmission system uses a set of carriers spaced apart in frequency with a number of bits being assigned to each carrier. A transmitter has a mapper which maps a data signal to a parallel set of constellation values. A frequency domain-to-time domain... | 01/31/2012 |
| 8107554 | Timing measurement for checking probes A system and a method for the transmission of signals representative of an event include a first low frequency clock and a low frequency counter for generating a first delay, and a second high frequency clock and a high frequency counter for generating a second dela... | 01/31/2012 |
| 8102939 | Link adaptation The present invention discloses an apparatus and method for adapting a transmission parameter in a transmitting node of a data communication system to the current link quality of a data communication channel. The adapted transmission parameter is selected by the tra... | 01/24/2012 |
| 8102938 | Tuning system and method using a simulated bit error rate for use in an electronic dispersion compensator A system and method is disclosed for controlling signal conditioning parameters and a sampling parameter controlling conversion of a received signal to digital sampled values prior to decoding. The sampled values are decoded according to a comparison with expected v... | 01/24/2012 |
| 8102937 | Enhanced bit mapping for digital interface of a wireless communication equipment in multi-time slot and multi-mode operation A controller is configured to determine a word in a set of words corresponding to a received coding value, the set of words including at least one data word, at least one modulator command word and at least one gain command word. When the received coding value corre... | 01/24/2012 |
| 8098758 | Digital baseband transmitter with digital RF/IF support in GSM/GPRS/EDGE compliant handsets Certain aspects of a digital baseband transmitter with digital RF/IF support in GSM/GPRS/EDGE compliant devices may comprise receiving digitized data within a chip. A control signal may be generated within the chip indicating whether the received digitized data is t... | 01/17/2012 |
| 8098760 | Method of generating reference signal in wireless communication system A method of generating a reference signal includes acquiring a base sequence and acquiring a reference signal sequence with a length N from the base sequence. Good PAPR/CM characteristics of the reference signal can be kept to enhance performance of data demodulatio... | 01/17/2012 |
| 8098759 | Radio transmitting device and radio transmitting method A radio transmitting device and method enables reduction of an increase of CGI memories for the control channel and an improvement of the throughput of the data channel. When multiplex transmission through the control channel and the data channel is carried out and ... | 01/17/2012 |
| 8094746 | Transmission method and system for the discrete multi-tone modulation data A transmission method and system of the discrete multi-tone modulation data, the method includes: generating, at a transmitting side, a first bit table according to data to be transmitted, wherein items of the first bit table include carrying data information on eac... | 01/10/2012 |
| 8094747 | Transmit methods for CCFI/PCFICH in a wireless communication system A method of transmitting a control channel format indicator (CCFI), also known as PCFICH (Physical Control Format Indicator Channel), in case where the length of a coded CCFI is not an integer multiple of three, including mapping a plurality of two-bit CCFI into a c... | 01/10/2012 |
| 8090046 | Interactive compression with multiple units of compression state information There is provided a method of interactive compression using multiple compression state information entries. The method comprises receiving a request for data from a communicating party; retrieving the data; identifying, for use in compressing the data, at least two ... | 01/03/2012 |
| 8090047 | System and method for programmably adjusting gain and frequency response in a 10-gigabit ethernet/fibre channel system Systems and methods for optimizing operation of a transceiver device are disclosed. The method may include parallel processing an input signal through a first path having a first frequency response and a second path having a second frequency response. The second fre... | 01/03/2012 |
| 8085865 | Method and apparatus for providing high speed data communications in a cellular environment A method and apparatus for transmitting digital data in a cellular environment. Adjacent cells of the cellular system are prevented from simultaneously transmitting data. Because the noise from transmissions of adjacent cells is a primary source of interference, the... | 12/27/2011 |
| 8085866 | Radio transmission apparatus, radio reception apparatus, modulation method, and demodulation method A rate matching apparatus is capable of improving the bit error rate characteristic at a data receiving end. A rate matching part (106), which serves as a rate matching apparatus, generates, from a first encoded block corresponding to N symbols (where N is an... | 12/27/2011 |
| 8085867 | Preamble design method A preamble design method of generating a preamble for a plurality of symbols using time waveform data of a specific symbol in an OFDM communication system includes a dividing step of dividing the time waveform data of the specific symbol into a plurality of blocks e... | 12/27/2011 |
| 8081706 | Lane-to-lane skew reduction in multi-channel, high-speed, transceiver circuitry Controllable delay circuitry is included in each channel of multi-channel, high-speed, serial transmitter and/or receiver circuitry to compensate for or to at least help compensate for possible skew (different signal propagation time) between the various channels. I... | 12/20/2011 |
| 8081708 | Reradiation apparatus for terrestrial digital broadcasting and method for reradiating terrestrial digital broadcasting A reradiation apparatus for terrestrial digital broadcasting includes plural antennas provided on a train and mutually spaced along the running direction of the train, plural receiving processing parts provided corresponding to the antennas, a master selecting part ... | 12/20/2011 |
| 8081707 | Carrier less modulator using saw filters A system and method of carrier less modulation is described in this disclosure that uses SAW filters as a modulator in addition to their conventional use as filters for band limiting an UWB system. This system and method is primarily designed to be used with any int... | 12/20/2011 |
| 8081709 | Method for transmitting information in a telecommunication system featuring multiple frequency bands A method for transmitting data in a telecommunication system including at least one communication network CNW1 including a group of radio base stations B1 able to communicate with at least one mobile terminal MT through a wireless link, which method in... | 12/20/2011 |
| 8077798 | DTV transmitting system and receiving system and method of processing broadcast signal A DTV transmitting system includes a pre-processor, a block processor, and a trellis encoder. The pre-processor pre-processes enhanced data by expanding the enhanced data at an expansion rate of 1/H. The block processor includes a first converter, a symbol encoder, ... | 12/13/2011 |
| 8077797 | Method, system, and apparatus for balanced frequency up-conversion of a baseband signal A balanced transmitter up-converts a baseband signal directly from baseband-to-RF. The up-conversion process is sufficiently linear that no IF processing is required, even in communications applications that have stringent requirements on spectral growth. In operati... | 12/13/2011 |
| 8068556 | Flexible, reconfigurable, power efficient transmitter and method A flexible, reconfigurable, power efficient transmitter device and method is provided. In one embodiment, the method includes receiving outbound data and determining a mode of operation. When operating in a first mode the method may include modulation mapping the ou... | 11/29/2011 |
| 8068555 | Methods and systems for combined cyclic delay diversity and precoding of radio signals In a transmitter or transceiver, signals can be precoded by multiplying symbol vectors with various matrices. For example, symbol vectors can be multiplied with a first column subset of unitary matrix which spreads symbols in the symbol vectors across virtual transm... | 11/29/2011 |
| 8064536 | Link calibration In some embodiments, provided are methods and circuits to control the power efficiency of a transceiver or a transmitter in a scalable I/O link (a link whose bandwidth and power can be adjusted to meet changing performance demands). ... | 11/22/2011 |
| 8054909 | Method of selecting candidate vector and method of detecting transmission symbol The present invention relates to a method of detecting a candidate vector and a method of detecting a transmission symbol using the same. According to an embodiment of the present invention, in a multiple input multiple output (MIMO) system using spatial multiplexin... | 11/08/2011 |
| 8054910 | Digital broadcast service discovery correlation Aspects of the invention are directed to service and channel discovery in a digital broadcast network. A pilot synchronization symbol, which has known characteristics, is included as a first symbol of digital broadcast frames. The pilot symbol, which can be decoded ... | 11/08/2011 |
| 8054908 | Transmitter circuit and radio transmission apparatus for transmitting data via radio by using impulses A transmitter circuit, which transmits data by using an impulse, has a variable delay circuit and a logic circuit. The variable delay circuit takes a clock as an input, and delays the clock in accordance with the data. The logic circuit takes the clock and an output... | 11/08/2011 |
| 8050351 | Quadrature modulator with feedback control and optical communications system using the same The method and system are disclosed for automatic feedback control of integrated optical quadrature modulator for generation of optical quaternary phase-shift-keyed signal in coherent optical communications. The method comprises the steps of detecting at least a par... | 11/01/2011 |
| 8045641 | Encoding of RFID A method is disclosed for generating data encoded RF (radio frequency) waveform without a separate memory device/chip. The hardware in the proposed method consists of entities performing the operations of time-delay (B), phase shifting (C), attenuation, power dividi... | 10/25/2011 |
| 8040971 | High performance mixed signal circuit The present invention is related to a digital circuit for use in a mixed-signal circuit. The digital circuit comprises: a first circuit for direct digital synthesis comprising a first phase generator (PG1) arranged for being... | 10/18/2011 |
| 8040970 | Method and apparatus for adaptive reduced overhead transmit beamforming for wireless communication systems A multi input multi output (MIMO) transceiver having a channel estimation module being responsive to received samples including channel state information (CSI) and operative to generate time domain beamforming parameters, in accordance with an embodiment of the pres... | 10/18/2011 |
| 8036304 | Apparatus and method of differential IQ frequency up-conversion A balanced transmitter up-converts I and Q baseband signals directly from baseband-to-RF. The up-conversion process is sufficiently linear that no IF processing is required, even in communications applications that have stringent requirements on spectral growth. In ... | 10/11/2011 |
| 8036301 | Radio transmitter with reduced power consumption A technique for controlling a transmitter apparatus is useful for reducing power consumption, and may be particularly applicable to portable apparatuses such as mobile transceivers which employ a battery power supply. According to an exemplary embodiment, the transm... | 10/11/2011 |
| 8036302 | Apparatus with communication capability, method for adjusting the same, and medium recording adjusting program An apparatus with communication capability is connected to another apparatus through a communication path. The apparatus includes a transmitting unit that transmits specific data with a preemphasized component to the other apparatus, the preemphasized component bein... | 10/11/2011 |
| 8036303 | Transmitter apparatus A transmitter apparatus capable of reducing the distortions of vector modulated waves. This apparatus includes variable coefficient filters (110,112) in a stage preceding an amplitude signal voltage generating part (104) and also includes variable coef... | 10/11/2011 |
| 8031801 | Method of controlling signal transmission in multi-input/multi-output system A method of controlling signal transmission in a Multiple Input Multiple Output (MIMO) communication system including selecting a modulation and code set (MCS) for each of M data streams transmitted via M transmitting antennas in a transmitting side of the MIMO syst... | 10/04/2011 |
