Patent application number | Description | Published |
20090060078 | NEAR SOFT-OUTPUT MAXIMUM-LIKELIHOOD DETECTION FOR MULTIPLE-INPUT MULTIPLE-OUTPUT SYSTEMS - Systems and methodologies are described that provide low-complexity soft-output detection for MIMO communication systems. Looping can be performed over a set of constellation points per spatial stream to obtain distance metrics for each of a series of transmitted streams, for which values for the other transmitted streams can be estimated using a MIMO channel matrix and a sub-optimal MIMO algorithm. Examples of MIMO algorithms that can be utilized include Per-Stream List Detection (PSLD), Lattice-Reduced Detection (LRD), and a Guided-M Algorithm. Performance can be further improved by pre-processing the MIMO channel matrix and/or by utilizing techniques for Enhanced Metric Usage (EMU). | 03-05-2009 |
20100008318 | SYSTEMS AND METHODS FOR PROVIDING A SEPARATE CONTENTION WINDOW ALLOWING ALLOCATIONS FOR PENDING UPLINK SDMA TRANSMISSION OPPORTUNITIES - A method for providing uplink spatial division multiple access (SDMA) transmission opportunities (TXOP) is described. A demarcation indication may be sent to one or more subscriber stations. An SDMA contention window may be started. An allocation indication may be received. Requested uplink SDMA TXOP resources may be allocated according to the allocation indication. | 01-14-2010 |
20100014448 | SYSTEMS AND METHODS FOR PARALLEL COMMUNICATION WITH LEGACY WLAN RECEIVERS - A method for parallel communication with wireless local area network (WLAN) receivers is described. A parallel transmission is started. A first MAC protocol data unit (MPDU) is sent to a first WLAN receiver. An acknowledgment (ACK) request is sent to the first WLAN receiver. An ACK is received from the first WLAN receiver. | 01-21-2010 |
20100046487 | MULTICHANNEL ARCHITECTURE FOR HIGH THROUGHPUT MODEMS - An apparatus for wireless communications is disclosed herein that is configured to have a plurality of transceivers arranged to process a plurality of spatial streams, wherein each of the plurality of transceivers is configured to operate asynchronously and simultaneously with other transceivers of the plurality of transceivers. | 02-25-2010 |
20100067597 | METHODS AND SYSTEMS FOR MAXIMUM-LIKELIHOOD DETECTION USING POST-SQUARING COMPENSATION - A “post-squaring” detection algorithm, and related devices, that may reduce the complexity of maximum likelihood detection (MLD) schemes while preserving their performance is provided. Rather than search for optimum metrics (such as minimum distance metrics) based on squared norm values, a search may be based on un-squared norm metrics, and the squaring may be postponed, for example, until subsequent log-likelihood ratio (LLR) computation. For certain embodiments, approximations of un-squared norm values may significantly reduce computation complexity. | 03-18-2010 |
20110059762 | OUTPUT POWER CONTROL FOR ADVANCED WLAN AND BLUETOOTH-AMP SYSTEMS - Embodiments of the present disclosure provide techniques for reducing power consumption by wireless devices through transmission output power control. | 03-10-2011 |
20120263107 | SYSTEMS AND METHODS FOR RANGE EXTENSION OF WIRELESS COMMUNICATION IN SUB GIGAHERTZ BANDS - Systems, methods, and devices to enable range extension for wireless communication in sub-gigahertz bands are described herein. In some aspects, portions of packets are repeated in time and/or space when transmitting the packet in order to increase the chance that the packet can be decoded. The repetition of portions of the packet may be based, in part, on the channel characteristics of the channel over which the packet is sent. In some aspects, portions of packets are transmitted over a smaller bandwidth with increased power per frequency range. | 10-18-2012 |
20120263141 | SYSTEMS AND METHODS FOR RANGE EXTENSION OF WIRELESS COMMUNICATION IN SUB GIGAHERTZ BANDS - Systems, methods, and devices to enable range extension for wireless communication in sub-gigahertz bands are described herein. In some aspects, portions of packets are repeated in time and/or space when transmitting the packet in order to increase the chance that the packet can be decoded. The repetition of portions of the packet may be based, in part, on the channel characteristics of the channel over which the packet is sent. In some aspects, portions of packets are transmitted over a smaller bandwidth with increased power per frequency range. | 10-18-2012 |
20130343275 | Methods For Signaling A Maximum Number of MSDUs In A Transmission - A first wireless station provides a configuration indication value that specifies a maximum number of medium access control layer service data units (MSDUs) that may be included in each medium access control layer protocol data unit (MPDU), or in each aggregated MPDU (A-MPDU), received by the first wireless station. A second wireless station receives the configuration indication value from the first wireless station, and in response, transmits only MSDUs (or A-MSDUs) having no more than the specified maximum number of MSDUs to the first wireless station. The configuration indication value can be included in various elements transmitted between the first and second wireless stations, including for example, a high throughput (HT) capabilities element, a very high throughput (VHT) capabilities information field, a VHT operation element or an add block acknowledge (ADDBA) response frame. | 12-26-2013 |
Patent application number | Description | Published |
20100091906 | Spatio-Temporal Processing for Communication - A space-time signal processing system with advantageously reduced complexity. The system may take advantage of multiple transmitter antenna elements and/or multiple receiver antenna elements, or multiple polarizations of a single transmitter antenna element and/or single receiver antenna element. The system is not restricted to wireless contexts and may exploit any channel having multiple inputs or multiple outputs and certain other characteristics. Multi-path effects in a transmission medium cause a multiplicative increase in capacity. | 04-15-2010 |
20110019771 | Spatio-Temporal Processing for Communication - A space-time signal processing system with advantageously reduced complexity. The system may take advantage of multiple transmitter antenna elements and/or multiple receiver antenna elements, or multiple polarizations of a single transmitter antenna element and/or single receiver antenna element. The system is not restricted to wireless contexts and may exploit any channel having multiple inputs or multiple outputs and certain other characteristics. Multi-path effects in a transmission medium cause a multiplicative increase in capacity. | 01-27-2011 |
20110310996 | Spatio-Temporal Processing for Communication - A space-time signal processing system with advantageously reduced complexity. The system may take advantage of multiple transmitter antenna elements and/or multiple receiver antenna elements, or multiple polarizations of a single transmitter antenna element and/or single receiver antenna element. The system is not restricted to wireless contexts and may exploit any channel having multiple inputs or multiple outputs and certain other characteristics. Multi-path effects in a transmission medium cause a multiplicative increase in capacity. | 12-22-2011 |
20130208823 | Spatio-Temporal Processing for Communication - A space-time signal processing system with advantageously reduced complexity. The system may take advantage of multiple transmitter antenna elements and/or multiple receiver antenna elements, or multiple polarizations of a single transmitter antenna element and/or single receiver antenna element. The system is not restricted to wireless contexts and may exploit any channel having multiple inputs or multiple outputs and certain other characteristics. Multi-path effects in a transmission medium cause a multiplicative increase in capacity. | 08-15-2013 |
20140241314 | Spatio-Temporal Processing for Communication - A space-time signal processing system with advantageously reduced complexity. The system may take advantage of multiple transmitter antenna elements and/or multiple receiver antenna elements, or multiple polarizations of a single transmitter antenna element and/or single receiver antenna element. The system is not restricted to wireless contexts and may exploit any channel having multiple inputs or multiple outputs and certain other characteristics. Multi-path effects in a transmission medium cause a multiplicative increase in capacity. | 08-28-2014 |