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| Number | Title | Issue Date |
| 8428524 | Adaptive transmission and receiving method and device in wireless communication system with multiple antennas Disclosed is an adaptive transmit and receive method and device in a multiple-antenna wireless communication system. A transmit mode comprises different main transmit modes each of which includes one or both of a sub-transmit mode based on STBC and a sub-transmit mo... | 04/23/2013 |
| 8364096 | Transmission device, and array antenna control method and device For transmitting a common channel signal with characteristics with an approximated non-directivity, the common channel signal for all users is divided into sub-channel signals, corresponding to a number of antenna elements composing an array antenna, to be concurren... | 01/29/2013 |
| 8364097 | Device and method for selecting transmission path in wireless network A device for selecting a transmission path in a wireless network includes a radio frequency (RF) module, a base band (BB) module, and a control module. The RF module is coupled to a plurality of antennas, for processing a packet of a wireless signal respectively rec... | 01/29/2013 |
| 8340598 | Dual mode power amplifier A dual mode power amplifier can include a linear gain section and a non-linear gain section configured together as a polar amplifier. The dual mode power amplifier may be used to transmit GFSK, 4-DPSK, and 8-DPSK modulated data. In one mode, both non-linear and line... | 12/25/2012 |
| 8301089 | Method for single stream beamforming with mixed power constraints System and method for calculating a transmitter beamforming vector related to a channel vector h under per-antenna power constraints combined with total power constraint, under per-antenna power constraints combined with overall line of site (LOS) effective isotropi... | 10/30/2012 |
| 8295787 | Method for transmitting and receiving additional control signals A method for transmitting/receiving an additional control signal without any loss of bandwidth and power in an original Tx signal is disclosed. If the additional control signal is transmitted via the Tx signal composed of at least one of data and control signals, at... | 10/23/2012 |
| 8170503 | Apparatus and method for transmitting data and apparatus and method for receiving data Provided are an apparatus and method for transmitting data and an apparatus and method for receiving data, in which beam forming is performed in consideration of the communication capabilities of antennas of stations that perform directional communication in a high-... | 05/01/2012 |
| 8165537 | Wireless transmitter and wireless transmission method A wireless transmitter of the present invention includes n (n being an integer of 2 or more) transmission antennas, a transmission circuit controller that, based on reception qualities reported from terminals, assigns a chunk to each terminal, and sends a phase-cont... | 04/24/2012 |
| 8140029 | Adaptive transmission and receiving method and device in wireless communication system with multiple antennas Disclosed is an adaptive transmit and receive method and device in a multiple-antenna wireless communication system. A transmit mode comprises different main transmit modes each of which includes one or both of a sub-transmit mode based on STBC and a sub-transmit mo... | 03/20/2012 |
| 8116700 | Reducing common mode effects in an output stage In one embodiment, a power amplifier may include an output stage with multiple transformers and corresponding matching capacitances. The capacitances may include a first matching capacitance coupled in parallel with a secondary coil of a first transformer and a seco... | 02/14/2012 |
| 8116698 | Generalized MIMO-beamforming weight estimation Techniques are provided to enable wireless communication between first and second wireless communication devices each having a plurality of antennas, where the second device sends the transmissions via less than all of its plurality of antennas. Each transmission ma... | 02/14/2012 |
| 8116699 | Transmitter To provide a transmitter wherein even in a case of sharing a detector circuit between or among a plurality of transmitting circuits, a high degree of detection accuracy can be achieved without increasing the signal power supplied to the detector circuit. In a transm... | 02/14/2012 |
| 8086190 | Method and system for reconfigurable devices for multi-frequency coexistence Aspects of a method and system for reconfigurable devices for multi-frequency coexistence are provided. In this regard, an IC may be configured based on a frequency of signals processed by the IC. In instances that the IC may process signals of a first frequency, th... | 12/27/2011 |
| 8068795 | RF multiband transmitter with balun A multi-band RF transmitter circuit (30) for a wireless communication device combines a plurality of RF transmission blocks into a single transceiver integrated circuit which includes a shared broadband SVGA (32), a shared tunable balun (34), an... | 11/29/2011 |
| 8068796 | Power divider and dual-output radio transmitter A power divider includes a substrate, a signal reception terminal formed in a first layer of the substrate for receiving signals, a first output terminal formed in the first layer for outputting radio-frequency (RF) signals, a matching terminal formed in a third lay... | 11/29/2011 |
| 8064849 | Precoding for multiple anntennas A wireless network (20) participates in radio frequency communication with plural wireless terminals (30). The network (20) comprises plural transmitters (40); a precoder value processor (42) configured to develop a set of precoder... | 11/22/2011 |
| 7986923 | Signal channel balancing A system and method for signal channel balancing through accurate estimation of signal amplitude and phase parameters are described. The system includes multiple analog-to-digital (A/D) converter devices coupled to a digital signal processing (DSP) unit, each A/D co... | 07/26/2011 |
| 7983633 | Radio base station having transmitters corresponding to a plurality of sectors, and signal transmission method for a plurality of sectors Circuit scale and power consumption of a base station is reduced with a feature of a sector-free configuration in routing processing. The feature is realized in a base station having transmitters corresponding to a plurality of sectors, as there are a switch distrib... | 07/19/2011 |
| 7974590 | Method and system for simultaneous signal transmission on multiple selected frequencies Aspects of a method and system for simultaneous signal transmission on multiple selected frequencies may include generating from a single baseband signal, a plurality of radio frequency transmission signals each at a different radio frequency, wherein the single bas... | 07/05/2011 |
| 7965990 | Wireless backhaul power amplification using fourier transform matricies An apparatus amplifies RF signals in a communication system by using a first directional coupler having at least two inputs and at least two outputs; at least two RF amplifiers, where an input of each RF amplifier is connected to a different one of the at least two ... | 06/21/2011 |
| 7933565 | Transformer coupling of antennas Embodiments describe improved coupling of power amplifiers to antennas for the transmission of signals, such as OFDM signals. A large number of separate windings are utilized on a primary side, wherein each winding is for a different OFDM tone. Each OFDM tone may be... | 04/26/2011 |
| 7899414 | Control of power amplifiers in devices using transmit beamforming A radio transmitter and method controls efficiency of each of a plurality of power amplifiers that amplify a corresponding one of a plurality of radio frequency signals for a beamforming transmission by a corresponding one of a plurality of antennas. Each of the plu... | 03/01/2011 |
| RE42098 | Adaptive transmission and receiving method and device in wireless communication system with multiple antennas Disclosed is an adaptive transmit and receive method and device in a multiple-antenna wireless communication system. A transmit mode comprises different main transmit modes each of which includes one or both of a sub-transmit mode based on STBC and a sub-transmit mo... | 02/01/2011 |
| 7877064 | Methods, apparatus and systems for terrestrial wireless broadcast of digital data to stationary receivers The present invention provides methods, apparatus and systems for delivery of digital data to stationary receivers over a terrestrial wireless link at a low data rate using a new coded orthogonal frequency division multiplexing (COFDM) scheme. Digital data is encode... | 01/25/2011 |
| 7711331 | Transmission power amplifier apparatus for combining power-amplified constant amplitude signals each having controlled constant amplitude value and phase In a transmission power amplifier apparatus, a signal calculator divides an input signal into a plurality of N constant amplitude signals having a substantially identical predetermined constant amplitude value and having predetermined phases different from each othe... | 05/04/2010 |
| 7590392 | Transmitter compensation In some embodiments, a chip with a transmitter having a transmitter driver is provided. Also provided is a general compensation circuit coupled to the transmitter to generally compensate the transmitter driver and a specific compensation circuit coupled to the trans... | 09/15/2009 |
| 7574181 | System and method for preprocessing a signal for transmission by a power amplifier System and method for preprocessing a signal for transmission by a power amplifier. In a preferred embodiment a multiple input multiple output processor is coupled to a plurality of power amplifiers for transmitting a signal, where the number of power amplifiers exc... | 08/11/2009 |
| 7565117 | Control of power amplifiers in devices using transmit beamforming A transmitter comprises a plurality of transmit antennas for simultaneously transmitting weighted signals according to a channel transfer function. Each antenna has a corresponding amplifier that is bias controlled according to the transmit weights derived for the a... | 07/21/2009 |
| 7536157 | Selecting modulation and amplification in a transmitter A transmitter for transmitting signals, comprising: a modulator for modulating a data signal, the modulator being capable of modulating the data signal according to any of two or more modulation schemes to form a modulated signal; an amplification arrangement for am... | 05/19/2009 |
| 7493092 | Wireless transceiver having plural transmission methods In a MIMO wireless transceiver, priority control that judges priority of transmit data and a transmission mode table are provided to control an option as to which transmission system SDM or STBC is selected, coding rate and modulation method based on a transmission ... | 02/17/2009 |
| 7439813 | Method and system for generating carrier frequencies for UWB application Apparatus and method for generating first, second and third carrier frequencies of 3432 MHz, 3960 MHz and 4488 MHz respectively, for use in a wireless transmission system deploy only first and second PLLs which are configured to generate 6336 MHz and 2640 MHz signal... | 10/21/2008 |
| 7433660 | Iterative multi-stage detection technique for a diversity receiver having multiple antenna elements An iterative multistage detection system and method for orthogonally multiplexing K channels onto a signal processing chain using N orthogonal sequences of length N. The K channels include a first set of N channels and a second set of M channels (the M channels bein... | 10/07/2008 |
| 7433659 | Iterative multi-stage detection technique for a diversity receiver having multiple antenna elements An iterative multistage detection system and method for orthogonally multiplexing K channels onto a signal processing chain using N orthogonal sequences of length N. The K channels include a first set of N channels and a second set of M channels (the M channels bein... | 10/07/2008 |
| 7415251 | Apparatus and method for improving efficiency of a power amplifier having a high peak-to-average power ratio A power amplification apparatus and method for amplifying a baseband signal having a high peak-to-average power ratio (PAR) are provided. The power amplification apparatus and method comprise a signal generation section for generating a peak-reduced signal obtained ... | 08/19/2008 |
| 7412218 | Iterative multi-stage detection technique for a diversity receiver having multiple antenna elements An iterative multistage detection system and method for orthogonally multiplexing K channels onto a signal processing chain using N orthogonal sequences of length N. The K channels include a first set of N channels and a second set of M channels (the M channels bein... | 08/12/2008 |
| 7409191 | Transmitting apparatus employing online calibration A transmitting apparatus includes a plurality of antenna elements, user signal output unit, calibration signal generation unit, antenna signal processing unit, and total transmission power measuring unit. The user signal output unit weights a user signal by an anten... | 08/05/2008 |
| 7406299 | Wireless communications method, system and terminal therefor utilising a plurality of simultaneous, data bearing, communications links for conveying data between a plurality of base stations and a terminal Capacity of radio links in an in-building cellular communication system is currently limited by bandwidth available for a communications link between a terminal and a single base station. The present invention mitigates this limitation by permitting the terminal to ... | 07/29/2008 |
| 7406055 | Radio communication apparatus, transmitter apparatus, receiver apparatus and radio communication system A radio communication apparatus at a transmission side that includes a plurality of transmission antennas and performs a communication using at least one carrier. The radio communication apparatus includes a channel dividing unit configured to divide a transmission ... | 07/29/2008 |
| 7400614 | Methods and apparatus for downlink diversity in CDMA using Walsh codes Downlink diversity in a CDMA system is provided by employing Walsh codes in conjunction with M transmit antennas at a common base station serving K mobiles, where M may or may not be to equal to K. The present invention provides methods and apparatus for improving d... | 07/15/2008 |
| 7394793 | Method and apparatus for generating preambles in a broadband wireless communication system using multiple antennas A preamble generation method and apparatus are provided for improving transmit diversity by changing a preamble structure in a broadband wireless communication system using multiple antennas based on a multiple input multiple output (MIMO) scheme. First pilot tones ... | 07/01/2008 |
