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US20090325479 RELAY ANTENNA INDEXING FOR SHARED ANTENNA COMMUNICATION  
Providing for distributed processing for a set of wireless communication devices to implement distributed, multi-antenna communication via one or more of the devices is described herein. By way of...
US20070054632 Wireless Network Scheduling Data Frames Including Physical Layer Configuration  
A wireless network is disclosed in which individual wireless stations can be configured to implement any of a plurality of physical configurations including antenna configurations. Such antenna...
US20060264184 Method and apparatus for selecting a beam combination of multiple-input multiple-output antennas  
A method and apparatus for selecting a beam combination of multiple-input multiple-output (MIMO) antennas are disclosed. A wireless transmit/receive unit (WTRUs) includes a plurality of antennas...
US20060084475 Mobile communication systems, mobile communication methods, base stations, mobile stations, and signal transmission methods in the mobile communication systems  
A mobile station is configured to measure receiving qualities of respective signals from a first antenna and a second antenna of a base station (S3, S5), store the results of the measurement, and...
US20090117859 SYSTEM AND METHOD FOR FREQUENCY OFFSETTING OF INFORMATION COMMUNICATED IN MIMO BASED WIRELESS NETWORKS  
A communications system includes a multiple-input/multiple-output architecture, which has a plurality of radio frequency chains. One of the plurality of radio frequency chains is configured to...
US20100003931 TRANSMISSION SCHEMES FOR MULTI-ANTENNA COMMUNICATION SYSTEMS UTILIZING MULTI-CARRIER MODULATION  
Pilot and data transmission schemes for multi-antenna communication systems utilizing multi-carrier modulation are provided. Subband multiplexing is used to avoid interference resulting from...
US20050113039 Antenna selection system, antenna selection method, and radio communication apparatus using the system and method  
An antenna that is larger in an RSSI signal level than another antenna is selected by an antenna selection control circuit by using the RSSI signal levels that exhibit the receiving state...
US20090023401 METHOD AND APPARATUS FOR REDUCING TRANSIENT IMPACTS OF BEAM SWITCHING IN A SWITCHED BEAM ANTENNA SYSTEM  
A method and apparatus for reducing transient impacts of beam switching in a switched beam antenna system are disclosed. A switch beam antenna system generates a plurality of beams in a predefined...
US20100041350 Uplink transmissions with two antenna ports  
A system and method for uplink transmit diversity. The system and method include a transmitter configured to pair symbols and transmit at least one the paired symbols and an orphan symbol using a...
US20060111054 Method and system for selecting transmit antennas to reduce antenna correlation  
A method and system is disclosed for transmitting data over at least one transmit antenna to reduce antenna correlation in wireless communication systems. The transmit antennas are comprised of...
US20060009168 Method for controlling transmissions using both diversity and nondiversity transmission schemes  
A wireless communications system is provided in which transmissions may be made in either a diversity mode or a non-diversity mode on a slot by slot basis. When transmitting in the diversity mode,...
US20080227414 SYSTEM, METHOD AND APPARATUS FOR TRANSMIT DIVERSITY CONTROL BASED ON VARIATIONS IN PROPAGATION PATH  
A method and apparatus for applications of identification of variations of propagation path to transmit diversity control. Transmit diversity parameters may be modified according to detected...
US20070082625 Transmitter and transmitting method in multiple transmitting antenna communication system  
A transmitter and a transmitting method for forming a pseudo common beam using a plurality of antennas in a smart antenna communication system are provided, in which beams for tones of Orthogonal...
US20050042988 Combined open and closed loop transmission diversity system  
A transmitting diversity system for wireless transmission of information to a receiver station comprising antenna means composed of a plurality of antenna groups, and each group consisting of a...
US20060160489 Method and system for multiple 60GHz system antennae  
In a wireless 60GHz data communication system, one or both of the source and receiver can have multiple antennae, with the antenna providing the best signal strength being dynamically selected. In...
US20050009476 Virtual MIMO transmitters, receivers, systems and methods  
A system for doing BLAST with fewer receive antennas or even only one receiving antenna is provided. A system implementation architecture is provided together with a detailed analysis on its...
US20110176633 METHOD AND SYSTEM FOR ORTHOGONALIZED BEAMFORMING IN MULTIPLE USER MULTIPLE INPUT MULTIPLE OUTPUT (MU-MIMO) COMMUNICATION SYSTEMS  
A method and system for orthogonalized beamforming in multiple user multiple input multiple output (MU-MIMO) communication systems are presented. Aspects of the method and system include an...
US20080096488 Apparatus and method for transmitting and receiving data in a communication system  
For data transmission/reception in a communication system, a transmitter precodes data to be transmitted via at least two antennas, with use of at least one precoding matrix of a predetermined...
US20070293164 Multi-connection, non-simultaneous frequency diversity in radio communication systems  
A radio communication system includes a remote device radio, and a base station radio operable to communicate with the remote device radio at a first channel and at a second channel using...
US20060270363 Method and apparatus for implementing cooperative diversity using partial channel knowledge  
Partial channel information is used to weight signals being transmitted by cooperating nodes within a cooperative diversity arrangement. In at least one embodiment, the phase of the complex...
US20050266904 Antenna control method, and wireless transmission and reception device  
An antenna control method for use in communication using a plurality of antennas which have different respective frequency bands, has a step in which, when performing transmission upon a...
US20170093442 INTEGRATED FRONT-END ARCHITECTURE FOR CARRIER AGGREGATION  
Circuitry, modules and devices for integrating front-end carrier aggregation architecture, are disclosed. In some embodiments, a front-end architecture includes a switching assembly configured to...
US20130109333 METHOD AND SYSTEM FOR SWITCHED COMBINED DIVERSITY WITH A MODAL ANTENNA  
A system and method for diversity implementation are provided, where diversity gains are obtained by using a hybrid of the switching technique and the combining technique in conjunction with the...
US20090047999 Method and system for beamforming communication in wireless communication systems  
A method and system for beamforming communication in a wireless communication system that includes a wireless initiator and a wireless responder is provided. A communication channel matrix is...
US20050239419 Array-antenna-equipped communication apparatus and method of calibrating array-antenna-equipped communication apparatus  
In an array-antenna-equipped communication apparatus, a part of a transmission signal after passing through a radio wave transmitter is branched by a directional coupler, combined by a combiner,...
US20050148306 Predictive method and apparatus for antenna selection in a wireless communication system  
A predictive method and apparatus are disclosed for selecting an antenna to use in a multi-antenna wireless device. A predictive antenna selector predicts the best antenna (for both receiving and...
US20050090207 Diversity reception tuner  
A diversity reception tuner of the invention has one first tuner and at least one tuner. The first tuner has a first PLL circuit and a first voltage-controlled oscillation circuit controlled by a...
US20100074183 MODE SWITCHING FOR A DOWNLINK COORDINATED MULTIPOINT COMMUNICATION  
A mode-switching network transmitter is for use with a network MIMO super cell and includes a super cell control unit configured to orchestrate a transmission from the network MIMO super cell,...
US20070190951 Data transmission method, transceiver and telecommunication system  
A transceiver and a method of controlling data transmission in a radio system, the method comprising transmitting packets from a first transceiver to a second transceiver, each packet having a...
US20070099578 Pre-coded diversity forward channel transmission system for wireless communications systems supporting multiple MIMO transmission modes  
A wireless communications system supporting multiple MIMO transmission modes supporting both diversity and directional transmissions under a plurality of different transmission modes comprises a...
US20050020216 Uplink macro diversity method  
The present invention relates to an uplink macro diversity method in a digital cellular mobile radio communication system, the method comprising the steps of: transmitting an information block...
US20050014474 Transmission diversity communication system  
Provided is a mobile cellular communication system or, more particularly, a transmission diversity communication system in which when the number of transmitting antennas is increased, antennas can...
US20090239486 APPARATUS FOR ANTENNA DIVERSITY USING JOINT MAXIMAL RATIO COMBINING  
A method for improving performance of radio frequency (RF) communication of a station (STA) having an access point (AP) is disclosed. The method includes using an arbitrary set of transmit antenna...
US20070037529 Radio tag communication apparatus  
A radio tag communication apparatus having a broad communicable range and a simple arrangement, is provided. Since there are provided a transmission antenna selection control portion for selecting...
US20070129024 Transmitter  
At least two types of amplifiers having different saturation output power values are used as a transmitting power amplifier (total number, N) each of which is mounted on N of antenna systems...
US20090124210 RADIO TRANSMITTING APPARATUS, RADIO RECEIVING APPARATUS, WIRELESS COMMUNICATION METHOD, AND WIRELESS COMMUNICATION SYSTEM  
A radio transmitting apparatus, a radio receiving apparatus, a wireless communication method and a wireless communication system wherein even when a channel correlation is large, the channel...
US20080119145 Hybrid duplex apparatus and method for supporting low-complexity terminal in wireless communication system  
Hybrid Duplex (DUAL MODE) apparatus and method for supporting a low-complexity terminal in a wireless communication system are provided. The apparatus includes a frequency generator and controller...
US20070173208 Mobile station device and transmission antenna selection method in the mobile station device  
A mobile station apparatus enabling increases in communication system capacity when uplink high-speed packet communication is performed and the like. The mobile station having a plurality of...
US20060270364 Wireless packet transmitting device and method using a plurality of antennas  
A wireless transmitting device for use in communication with a wireless receiving device with a wireless packet, includes a plurality of antennas, and a signal generator to generate a signal for...
US20050003772 IBOC broadcast receiver  
An IBOC broadcast receiver includes a diversity receiving unit for receiving a broadcast wave, a tuner unit for selecting a signal via a switch and connecting the received broadcast wave to one of...
US20070135154 Method and system for controlling transmitter power using antenna loading on a multi-antenna system  
A system (100) and method (200) of controlling transmit power in a mobile wireless device (101) can include a plurality of transmitters (103, 105, 107), a plurality of antennas (102,104,116)...
US20050266902 Multiple transmission channel wireless communication systems  
A multiple transmission channel wireless communication system such as MIMO system, comprises a transmitting station and at least one receiving station, at least one of said stations having an...
US20120309331 MODULAR MILLIMETER-WAVE RADIO FREQUENCY SYSTEM  
A modular millimeter-wave radio frequency (RF) system comprises a plurality of active antenna arrays for receiving and transmitting millimeter-wave RF signals; and a plurality of RF sub-modules...
US20100046412 REFERENCE SIGNAL STRUCTURES FOR MORE THAN FOUR ANTENNAS  
A transmitter, for use with a cellular communication network, includes a reference signal generation unit configured to provide a reference signal corresponding to a reference signal structure for...
US20070082623 Mimo transmitter and receiver for low-scattering environments  
A transmitter (Tx1, Tx2) is arranged for simultaneously transmitting at least a first (s′1) and a second (S′2) signal. The first signal (s′1) is modulated according to a first modulation...
US20060205368 Selecting an optimal antenna according to an operating state of a device  
A device (100) has a housing assembly having a plurality of housing portions which can shift relative to each other, a plurality of antennas (102) distributed among the plurality of housing...
US20060052065 Transmit diversity fo base stations  
A method and corresponding upgrade kit, for enhancing a base station (10) having a CDMA air interface and a passive antenna (12) with receive space diversity capability so as to provide the base...
US20060035608 Method and system for using angular hopping in wireless communication systems  
A method and system is disclosed for transmitting signals at particular angles (i.e. angular hopping) thereby decreasing the amount of signals transmitted at angles that result in signals, or...
US20090325514 WIRELESS COMMUNICATION SYSTEM AND TRANSMISSION DEVICE  
The present invention relates to a wireless communication system to properly switch over a transmission method of radio signals corresponding to a configuration of a receiver. The wireless...
US20050272382 Wireless communication apparatus  
In a wireless communication apparatus which is provided with three transmission systems each including therein a transmission power amplifier for amplifying a signal received and a transmitting...

Matches 1 - 50 out of 111 1 2 3 >