Quotables
"The production of too many useful things results in too many useless people."
Karl Marx
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 8179778 | Method and system for effective adaptive coding and modulation in satellite communication system A Second Generation Digital Video Broadcasting via Satellite (DVB-S2) system is provided. More particularly, a method and apparatus for maintaining synchronization of a signal by changing an Adaptive Coding and Modulation (ACM) method that is used for a conventional... | 05/15/2012 |
| 8174956 | Systems and method for orthogonal frequency divisional multiplexing Systems and methods for orthogonal frequency division multiplexing are provided. In one embodiment, a multi-carrier modem comprises: a transmitter configured to modulate symbols onto at least one of a plurality of the spectrally overlapping carrier signals; a proces... | 05/08/2012 |
| 8165008 | High-data-rate communication link using multiple lower rate modems A method for communication includes receiving a composite signal, which carries data at a first data rate and includes multiple sub-signals that are interleaved in a time domain and are separated by boundary indicators. The received composite signal is demultiplexed... | 04/24/2012 |
| 8144571 | Method of transmitting and processing data and transmitter in a wireless communication system A method for transmitting/processing data in a wireless communication system, and a transmitter are disclosed. A method processing method for data transmission at a transmitting side of a wireless communication system employing multiple carriers comprises performing... | 03/27/2012 |
| 8121019 | Wireless communication apparatus, mobile terminal, and wireless communication method In a communication system in which communication is performed by switching between first multi-antenna transmission control which performs multi-stream transmission and second multi-antenna transmission control which performs single-stream transmission, the distance... | 02/21/2012 |
| 8107355 | Detection and mitigation of temporary (bursts) impairments in channels using SCDMA Systems and methods are disclosed for detecting and mitigating temporary high-level impairments, in a communications channel, and subsequently, mitigating the deleterious effects of the dynamic impairments. The system includes a transmitter and a receiver. The trans... | 01/31/2012 |
| 8089854 | Companded transmit path for wireless communication This disclosure describes companded transmit path techniques that may be implemented in a wireless communication device to reduce power consumption and possibly simplify signal modulation. In accordance with this disclosure, in phase (I) and quadrature phase (Q) com... | 01/03/2012 |
| 8077592 | Packet processing systems and methods Various packet processing systems and methods are disclosed. One method embodiment, among others, comprises providing a legacy long training symbol (LTS), and inserting subcarriers in the legacy LTS to form an extended LTS (ELTS). ... | 12/13/2011 |
| 8077594 | Radio communication base station device and correlation setting method Provided is a radio communication base station device which can suppress a use amount of an SRS communication resource. In this device, a correlation rule setting unit (102) sets a rule for correlating a preamble with an SRS transmission time interval so that... | 12/13/2011 |
| 8077593 | Radio communication mobile station device and correlation setting method Provided is a radio communication base station device which can suppress a use amount of an SRS communication resource. In this device, a correlation rule setting unit (102) sets a rule for correlating a preamble with an SRS transmission time interval so that... | 12/13/2011 |
| 8027242 | Signal coding and decoding based on spectral dynamics In an apparatus and method, time-varying signals are processed and encoded via a frequency domain linear prediction (FDLP) scheme to arrive at an all-pole model. Residual signals resulted from the scheme are estimated. Quantized values of the all-pole model and the ... | 09/27/2011 |
| 8023396 | Adaptive modulation for fixed wireless link in cable transmission system In one embodiment of a communications network, the predetermined encoding scheme and symbol constellation configurations are chosen so that the range in channel qualities that the encoding scheme and symbol constellation configurations are designed to be utilized wi... | 09/20/2011 |
| 8000221 | Adaptive pilot insertion for a MIMO-OFDM system A transmitting entity transmits a “base” pilot in each protocol data unit (PDU). A receiving entity is able to derive a sufficiently accurate channel response estimate of a MIMO channel with the base pilot under nominal (or most) channel conditions. The transmit... | 08/16/2011 |
| 7983140 | Transmitting apparatus, receiving apparatus, and communication system for formatting data A transmitting apparatus, a receiving apparatus, and a communication system are provided that allow a reduction in a frame loss due to interference caused by use of the same channel. A transmitting apparatus disposed in a base station includes a GPS receiver for rec... | 07/19/2011 |
| 7961588 | Communication device for receiving and transmitting OFDM signals in a wireless communication system A communication device for transmitting orthogonal frequency division multiplexed (OFDM) signals in a wireless communication system. The device includes a plurality of antenna elements that transmit the OFDM signals to a receiver over a plurality of transmission cha... | 06/14/2011 |
| 7957257 | Communication systems A transmission method for use in a multi-hop wireless communication system is provided. The method includes, for two apparatuses having overlapping transmission coverage areas, one of the two said apparatuses being an intermediate apparatus, transmitting a first tra... | 06/07/2011 |
| 7957258 | Communication device for receiving and transmitting OFDM signals in a wireless communication system A communication device for receiving transmitted orthogonal frequency division multiplexed (OFDM) signals in a wireless communication system. The device includes a plurality of antenna elements to receive a plurality of OFDM signals transmitted from a transmitter vi... | 06/07/2011 |
| 7948864 | High dimension signaling using orthogonal waveform division multiplex A communications system (100) includes a segmenter (204) for dividing a plurality of bits into a first segment and a second segment and a symbol mapper (208) for generating a plurality of symbols based on the first segment. The system also inclu... | 05/24/2011 |
| 7944807 | System and method for implementing a single-wire serial protocol Methods and apparatus for a single-wire serial communication system are disclosed herein. In one embodiment, a method includes defining a predetermined short pulse as data to be transmitted and a predetermined long pulse as a data separator for the data to provide s... | 05/17/2011 |
| 7940638 | MIMO communication system and method for communicating with single antenna and multi-antenna mobile stations In a wireless local area network (WLAN) that includes high-throughput communication devices with multiple antennas and legacy communication devices with single antennas, training tones are transmitted over a plurality of spatial channels during a first portion of an... | 05/10/2011 |
| 7933195 | Method and apparatus for transmitting/receiving channel quality information in a communication system using an orthogonal frequency division multiplexing scheme A method for transmitting channel quality information (CQI) from a receiver station to a transmitter station in a wireless communication system which includes diversity mode consisted of spaced apart subcarriers and band AMC mode consisted of a number of bands compr... | 04/26/2011 |
| 7916621 | MIMO control signaling in a wireless communication system The present invention relates to a method for data transmission in a communication system. The method including, determining, at the transmitter, whether to transmit data signal using a single codeword or two codewords, when it is determined that the single codeword... | 03/29/2011 |
| 7885176 | Methods and apparatus for mapping modulation symbols to resources in OFDM systems A method for transmission, by dividing a transmission resource in a time domain subframe into a plurality of equal duration resource elements in a time and frequency domain, segregating the plurality of resource elements into a plurality of resource regions, modulat... | 02/08/2011 |
| 7881180 | Systems and method for orthogonal frequency divisional multiplexing Systems and methods for orthogonal frequency division multiplexing are provided. In one embodiment, a multi-carrier modem comprising: a receiver configured to de-modulate symbols from at least one of a plurality of spectrally overlapping carrier signals; a transmitt... | 02/01/2011 |
| 7852744 | Method and apparatus for channel estimation in a wireless communication device The present disclosure provides a method and apparatus of channel estimation for a wireless communication system. A pilot signal energy is estimated based on received pilot symbols. An estimated traffic signal energy of the traffic signal symbols is estimated based ... | 12/14/2010 |
| 7839759 | Radio communication apparatus and radio communication method The transmitting side is equipped with chip steering section 30 that performs a chip steering that shifts the allocation of N×M chip elements upon their respective subcarriers by one chip for every transmission unit in sequence, and the receiving side is equipped w... | 11/23/2010 |
| 7839761 | Apparatus and method for transmitting and receiving map information in a communication system A method and apparatus for transmitting and receiving MAP information in a communication system are provided. A base station acquires channel quality information of each mobile station, generates sub-MAPs using MAP information, to which at least one of a coding sche... | 11/23/2010 |
| 7839760 | Transmitting and receiving systems for increasing service coverage in orthogonal frequency division multiplexing wireless local area network, and method thereof The present invention relates to an orthogonal frequency division multiplexing wireless local area network (LAN) transmitting/receiving system for providing expanded service coverage, and a method thereof. A first OFDM modulation is performed for an even-numbered ti... | 11/23/2010 |
| 7835261 | Universal derotator for UMTS modes The invention relates to a mobile communication apparatus (200) comprising a receiver (203), a derotator (206), a demodulator (208) and a processor (212). The receiver (203) is connected to the derotator (206), the de... | 11/16/2010 |
| 7826339 | Hierarchical modulation reverse link interface node A wireless communication device transmits a hierarchically modulated reverse link (RL) WWAN signal comprising a lower modulation order component and a higher modulation order component. An interface node receives and demodulates the hierarchical modulated signal to ... | 11/02/2010 |
| 7826340 | Hierarchical modulation reverse link interface node providing multiple service levels A wireless communication device transmits a hierarchically modulated reverse link (RL) WWAN signal comprising a lower modulation order component corresponding to first service level data and a higher modulation order component corresponding to second service level d... | 11/02/2010 |
| 7804761 | Multiplexing separately modulated channels A method of data transmission which includes providing a plurality of data streams, having different content, modulating the different data streams by respective modulators, multiplexing the modulated data streams into a single data stream alternately in time, such ... | 09/28/2010 |
| 7782749 | Method for mapping physical downlink control channel to resources and apparatus for transmitting/receiving the mapped physical downlink control channel in a wireless communication system A method for mapping a Physical Downlink Control Channel (PDCCH) to resources and an apparatus for transmitting/receiving the mapped PDCCH in a wireless communication system are provided, in which if at least one PDCCH is scheduled to be transmitted in a subframe ac... | 08/24/2010 |
| 7778147 | MIMO communication system using an adaptive transmission mode switching technique A multiple-input multiple-output (MIMO) wireless communication system. A transmitter that includes a plurality of transmit antennas selects one of a spatial multiplexing scheme and a spatial diversity scheme, processes a signal in the selected transmission scheme, a... | 08/17/2010 |
| 7778148 | Method for allocating physical hybrid automatic repeat request indicator channel A method for allocating a physical hybrid ARQ indicator channel (PHICH) includes allocating a CDM group according to a cyclic prefix type in consideration of a ratio of the numbers of necessary CDM groups according to spreading factors, and allocating a PHICH to the... | 08/17/2010 |
| 7773498 | Transmitting/receiving apparatus, method, program, recording medium, and integrating circuit used in communication network A transmitting/receiving apparatus includes a packet construction section for dividing continuous data into a plurality of subpackets, and constructing a packet by concatenating the plurality of subpackets; a modulation transmission section for modulating the constr... | 08/10/2010 |
| 7742389 | Method and apparatus for improved short preamble formats in a multiple antenna communication system Methods and apparatus are provided for improved short preamble formats in a multiple antenna communication system having N antennas. A short preamble format having a legacy portion and a high throughput portion is transmitted (or received) on each of the N transmit ... | 06/22/2010 |
| 7742388 | Packet generation systems and methods Disclosed herein are various embodiments of methods, systems, and apparatus for increasing packet generation in a digital communication system. In one exemplary method embodiment, subcarriers are added to a packet in a wireless local area network transmission to inc... | 06/22/2010 |
| 7742390 | Method and apparatus for improved long preamble formats in a multiple antenna communication system Methods and apparatus are provided for improved long preamble formats in a multiple antenna communication system having N antennas. According to one aspect of the invention, a preamble having a legacy portion and a high throughput portion is transmitted (or received... | 06/22/2010 |
| 7738355 | Packet data transmission with optimum preamble length In a communication network, a sending node transmits a message with a multisegment preamble and data to a receiving node. The receiving node calculates characteristics of the sending unit, channel, or transmitted signal by processing preamble segments. Once an unkno... | 06/15/2010 |
