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| Number | Title | Issue Date |
| 7720470 | Reference signals for downlink beamforming validation in wireless multicarrier MIMO channel Dedicated pilot signals are transmitted from a transmitting device to a receiving device through a multicarrier MIMO channel in addition to data signals and common pilot signals. The dedicated pilot signals may be used by the receiving device to validate whether a p... | 05/18/2010 |
| 7688158 | Digitally tuned, integrated baluns with enhanced linearity for multi-band radio applications An integrated balun includes a low pass filter and a high pass filter that are formed on a semiconductor chip using tunable reactive elements. The outputs of the low pass filter and the high pass filter are tied together to form the single ended output of the balun.... | 03/30/2010 |
| 7665008 | Method and apparatus for implementing a low density parity check code in a wireless system A low density parity check (LDPC) code is used within a wireless apparatus to perform forward error correction (FEC) coding. In at least embodiment of the invention, a (2000, 1600) bit-length LDPC code is used. ... | 02/16/2010 |
| 7649407 | Digitally tuned, integrated RF filters with enhanced linearity for multi-band radio applications An integrated, multi-band radio frequency (RF) filter is capable of modifying a filter response thereof in response to control information. Switching elements within the filter can be changed between on and off conditions to modify the filter response. In one implem... | 01/19/2010 |
| 7636577 | Method and apparatus to implement efficient paging in a wireless network Techniques are disclosed for achieving efficient paging in a wireless network. In at least one embodiment, paging is performed in a manner that achieves a balance between paging latency and paging signaling overhead. ... | 12/22/2009 |
| 7636404 | Packet detection in the presence of platform noise in a wireless network Techniques are presented for improving packet detection within a wireless device in the presence of platform noise. In some embodiments, packet detection is carried out by first performing a correlation operation using a signal at an input of a wireless receiver. Th... | 12/22/2009 |
| 7633891 | Method and apparatus for implementing block acknowledgement in a wireless network The size of a block acknowledgement (BA) window used during a BA transaction is varied during the transaction based on one or more parameters that are related to a present channel condition between an originator device and a recipient device. ... | 12/15/2009 |
| 7630723 | Method and apparatus to automatically silence a mobile device A wireless silencing device transmits a wireless silence signal in or near a region where extraneous sound is undesired. Wireless devices in receipt of the wireless silence signal may use the signal to determine whether to enable an auto silence mode of operation. | 12/08/2009 |
| 7624334 | Construction and use of shortened EG-LDPC codes Code shortening techniques are used to achieve a variety of code lengths and code rates for Euclidean geometry low density parity check (EG-LDPC) codes. ... | 11/24/2009 |
| 7623836 | Antenna selection for multicarrier communications Antenna selection is performed in a multicarrier communication system based on antenna scores. In at least one embodiment, an antenna score is calculated for an antenna by determining grades for individual carriers associated with the antenna based on corresponding ... | 11/24/2009 |
| 7623589 | Cooperative multiple-access using user-clustering and space-time-frequency coding techniques for higher reliability reception Multiple wireless user devices act cooperatively to communicate with a remote destination node through a MIMO channel. In at least one embodiment, a cooperative cluster of user devices is formed that makes use of vertical coding techniques to achieve enhanced commun... | 11/24/2009 |
| 7623443 | Time spread multicarrier burst maps In a multicarrier communication network, specific subcarriers are dedicated for use in carrying burst descriptor information. A subscriber station in the network may monitor the dedicated subcarriers to determine when a burst involving the station is to occur. By us... | 11/24/2009 |
| 7613914 | Wireless user device having integrated hotspotter technology A wireless user device includes functionality for detecting and collecting information about network hotspots in a surrounding environment before an operating system is loaded. In this manner, a mobile user can check for wireless network availability without having ... | 11/03/2009 |
| 7613242 | Method and system for multicarrier communication between a base station and subscribers of different bandwidths A multicarrier base station communicates with subscriber stations of different bandwidth profiles by allocating time slots in downlink and uplink frames and subcarriers of a single multicarrier communication channel to various bandwidth subchannels. ... | 11/03/2009 |
| 7609780 | Method and apparatus for performing sequential closed loop multiple input multiple output (MIMO) In a communication system using closed loop multiple input/multiple output MIMO, beam forming information may be fed back from a receiver to a transmitter sequentially over a number of frames. The beam forming matrices that are fed back may be quantized. ... | 10/27/2009 |
| 7577209 | Deterministic spatial power allocation and bit loading for closed loop MIMO Spatial power allocation and bit loading are performed deterministically for a closed loop MIMO system. ... | 08/18/2009 |
| 7567129 | Monolithic flexible power amplifier using integrated tunable matching networks A flexible power amplifier can be adapted during operation for use in connection with two or more different wireless standards. In at least one embodiment, adaptations to power transistor size, RF bias current, and matching are made when a corresponding multi-standa... | 07/28/2009 |
| 7565393 | Discrete time filter having gain for digital sampling receivers A discrete time filter achieves gain by sampling a signal using capacitors arranged in a one configuration and then changing the capacitors to a series configuration to develop a filter output voltage. In at least one embodiment, a variable gain filter is achieved b... | 07/21/2009 |
| 7565119 | Predistortion correction loop-back based on high linearity and low linearity modes A power amplifier pre-distortion calibration technique transmits two packets at different power levels for use in the calibration. As each packet is transmitted, it is received by the same device through a loop back path. The two received packets are then processed ... | 07/21/2009 |
| 7564311 | Method and apparatus to enhance linearity and efficiency in an RF power amplifier Dynamic biasing techniques are used to enhance both linearity and efficiency within a transistor power amplifier. In at least one embodiment, as the power level being processed by a transistor increases toward a saturation point, a transistor is moved from class B o... | 07/21/2009 |
| 7542738 | Method and apparatus for measuring and compensating for power amplifier distortion and non-linearity A power amplification system includes functionality for measuring and compensating for distortion and non-linearity in a power amplifier (PA). The compensation process may be performed repeatedly (or continuously) during the operational life of the PA to adapt to ch... | 06/02/2009 |
| 7542515 | Training symbol format for adaptively power loaded MIMO Training symbol formats are provided for use in a MIMO based wireless communication system that uses adaptive power loading. In at least one embodiment, a training symbol format is used that is capable of enhancing training symbol signal to noise ratio (SNR). ... | 06/02/2009 |
| 7542459 | Ad hoc network having a back-bone determined at least in part on a metric and method therefore Briefly, in accordance with one embodiment of the invention, an ad-hoc network comprises nodes. A sub-set of the nodes provides a backbone for communication between nodes in the ad-hoc network. At least some of the nodes in the backbone are selected to be a router b... | 06/02/2009 |
| 7542454 | MIMO channel feedback protocols Handshaking protocols, techniques, and structures are presented for use in implementing closed loop MIMO using explicit feedback in a wireless network. ... | 06/02/2009 |
| 7539471 | Method and apparatus to provide variable gain in a radio receiver front end An RF receiver front end includes a variable gain low noise amplifier and/or a variable gain mixer to provide gain variability in the receiver. This gain variability may be used during, for example, automatic gain control operations. In at least one embodiment, the ... | 05/26/2009 |
| 7539270 | Method and apparatus to interleave bits across symbols from different constellations An encoded input bit stream is interleaved across a number of symbols having different bit sizes in a manner that ensures that the bits assigned to each symbol from the bit stream are separated by a minimum separation. In this manner, bits that are adjacent within t... | 05/26/2009 |
| 7539151 | Channel selection for mesh networks having nodes with multiple radios Channels are selected for nodes in a wireless mesh network in a mananer that enhances connectivity and throughput in the network. For a node in the network, channel configurations are first identified that satisfy a predetermined connectivity constraint with respect... | 05/26/2009 |
| 7536630 | Reconfigurable Viterbi/turbo decoder A reconfigurable decoder is capable of performing both Viterbi decoding and turbo decoding. The reconfigurable decoder may be repeatedly reconfigured to work with any of a number of different convolutional or turbo coding schemes. In at least one embodiment, the rec... | 05/19/2009 |
| 7500119 | Power saving techniques for use in communication systems, networks, and devices Power saving strategies are presented for use in communication systems, networks, and devices. In at least one embodiment, a power saving probe request is sent from a first entity to a second entity to request information on available power saving capabilities of th... | 03/03/2009 |
| 7477635 | Platform noise mitigation in OFDM receivers Techniques and structures are presented for use in mitigating the effects of platform noise within a wireless device. ... | 01/13/2009 |
| 7471668 | Method and apparatus for implementing all-to-all communication in a wireless mesh network All-to-all communication is carried out in a wireless mesh network using a relaying packet that is routed through the network. In at least one embodiment, the relaying packet includes aggregated information that is made available to all nodes in the mesh network. | 12/30/2008 |
| 7456720 | On-die coupled inductor structures for improving quality factor On-die coupled inductor structures are disclosed that are capable of reducing the occurrence of charge crowding within the structure. ... | 11/25/2008 |
| 7447268 | OFDM system with per subcarrier phase rotation Subcarrier phase rotation is implemented in an OFDM transmitting apparatus to overcome problems such as, for example, non-frequency selective multipath fading. In at least one embodiment, subcarrier phase rotation is practiced in an OFDM system implementing multiple... | 11/04/2008 |
| 7441069 | Default instruction to hide nonvolatile memory core initialization latency A memory operating in an execute-in-place (XIP) type mode returns a default instruction when an nV memory core is not ready for access. The default instruction may be selected to provide a system stall when executed within a corresponding processor. ... | 10/21/2008 |
| 7403512 | Service discovery architecture and method for wireless networks Techniques and structures are disclosed for providing service related information to wireless users within a wireless network. ... | 07/22/2008 |
| 7400599 | Method and apparatus to control training for reverse direction data in a high throughput wireless network In a high throughput wireless network, data is permitted to be transmitted in a reverse direction during a frame exchange (i.e., from a responder to an initiator). In at least one embodiment, channel training is performed in the reverse direction only if it is deter... | 07/15/2008 |
| 7392053 | Method and apparatus for selective listening in a dynamically configured wireless network Nodes of an ad-hoc network may determine a category assigned to neighbor nodes and may select a communication pattern for communicating with the neighbor nodes based on their assigned categories. The category may be associated with a node's role in the network. ... | 06/24/2008 |
| 7391758 | UMTS radio link control with full concatenation Enhanced throughput is achieved by using full concatenation of SDUs, SDU fragments, and STATUS PDUs within the protocol data units of a UMTS-based system. ... | 06/24/2008 |
| 7389122 | Method and apparatus to provide a continuous useable wireless network connection A useable wireless network connection is continuously maintained for a client device. ... | 06/17/2008 |
| 7385958 | Ad hoc mode of operation in wireless personal area networks Techniques and structures are provided to allow a wireless data device to operate within a wireless personal area network without the use of a centralized coordination function. ... | 06/10/2008 |
