Patent application number | Description | Published |
20110051853 | SOFT VALUE GENERATION USING SERIAL LOCALIZATION WITH INDECISION - Soft bit values are generated for received symbols transmitted based on a modulation constellation by demodulating the received symbols via a sequence of demodulation stages, each demodulation stage producing a symbol decision based on an effective constellation. Each effective constellation used by a non-final one of the demodulation stages includes subsets of centroids approximating a region of the modulation constellation. Adjacent ones of the subsets have one or more common points so that at least two adjacent subsets overlap. The soft bit values for the symbol decisions are determined based on detection metrics computed during demodulation for the points included in the effective constellation constructed incrementally over the sequence of demodulation stages, the effective constellation produced by the final demodulation stage being devoid of one or more points included in the modulation constellation. | 03-03-2011 |
20120027139 | METHOD AND APPARATUS FOR MULTI-STREAM RECEIVED SIGNAL PROCESSING IN A COMMUNICATION RECEIVER - The teachings herein provide a method and apparatus for partitioning sets of MIMO streams, for joint processing. In particular, there is an optimum or otherwise best partitioning of a set of MIMO streams into a first subset to be jointly processed and a second subset to be suppressed as interference with respect to that joint processing. Of course, more than one partitioning may be used, e.g., across different joint processing stages and/or at different times, such that all streams of interest are processed. Correspondingly, the present invention provides a method and apparatus for selecting an optimum or otherwise relative “best” subset of MIMO streams for processing together in a joint process, from among a larger set of MIMO streams. The method and apparatus may, for example, be employed in a multi-stage joint processing receiver, where subset selections are performed on a per-stage basis. | 02-02-2012 |
20120177147 | METHODS OF RECEIVING MULTIPLE CARRIERS USING DIFFERENT RF MIXER FREQUENCIES AND RELATED COMMUNICATIONS DEVICES AND RECEIVERS - Methods may be provided to simultaneously receive first and second RF (radio frequency) carriers over respective first and second RF carrier frequencies. More particularly, the first and second RF carriers may be provided at an RF mixer stage. During a first time period, the first and second RF carriers may be down converted through the RF mixer stage using a first RF mixer frequency to generate first downconverted signals, and the first downconverted signals may be processed to provide first and second DC carriers corresponding to the first and second RF earners. During a second time period, the first and second RF carriers may be downconverted through the RF mixer stage using a second RF mixer frequency to generate second downconverted signals with the first and second RF mixer frequencies being different, and the second downconverted signals may be processed to provide the first and second DC carriers corresponding to the first and second RF carriers. Related devices are also discussed. | 07-12-2012 |
20120190400 | STALE FEEDBACK USING A SECONDARY BASE STATION - A system and method in which two base stations—a Primary Base Station (PBS) and a Secondary Base Station (SBS)—are used to accomplish a Virtual 2-antenna Receiver (V2RX) scheme. The PBS may perform the initial transmissions of symbols, but, instead of the PBS, the SBS may handle the subsequent reception of terminal-specific Channel State Information (CSI) and the broadcast of an additional signal. The SBS can be much simpler in design than the PBS, and can be located physically closer to the terminals, requiring less power for the feedback signals (from the terminals) and also for SBS's own broadcast of the additional signal to terminals. The reception and usage of stale CSI using a secondary base station can be important for dense networks with a large number of simple terminals. Because of the rules governing abstracts, this abstract should not be used to construe claims. | 07-26-2012 |
20120243468 | SIGNAL COMPRESSION FOR BACKHAUL COMMUNICATIONS USING LINEAR TRANSFORMATIONS - A compression/decompression method for backhaul communication of a complex-valued radio signal between base stations and the network processing unit, such as a Central Processor of a Coordinated MultiPoint (CoMP) system, significantly reduces backhaul bandwidth. The spatial and temporal correlations of the wireless IQ signal are exploited in order to remove redundancy and substantially reduce signal bandwidth. Feature component signals of significance are extracted through linear transformation to form the radio signal, and are individually quantized, possibly at different bit rates in accordance with their relative importance. The transformation can either be pre-determined or computed in real-time based on the spatial and temporal statistics of the radio signal. In the latter case, the transformation matrix or matrices are also sent over the backhaul in order to allow the radio signal to be reconstructed at the receiving end. Different methods of generating the transformation matrices are proposed. | 09-27-2012 |
20130028355 | DEMODULATION USING SERIAL LOCALIZATION WITH INDECISION - A receiver includes a constellation processing module and a plurality of demodulation stages. The constellation processing module groups points of a constellation associated with a transmitted signal into a plurality of subsets, were at least two adjacent ones of the subsets have one or more common constellation points so that the at least two adjacent subsets overlap. The constellation processing module also determines a centroid-based value for each of the subsets of constellation points and groups the centroid-based values into one or more sets. Each of the demodulation stages except for the last demodulation stage localizes a search for a final symbol decision using the set of centroid-based values input to or selected by the demodulation stage as constellation points. The last demodulation stage determines the final symbol decision using the subset of constellation points input to or selected by the last demodulation stage. | 01-31-2013 |
20130089132 | RECEIVER AND METHOD FOR TWO-STAGE EQUALIZATION WITH SEQUENTIAL SEARCH - A receiver and method are described herein that address inter-symbol interference in a received signal by using a two-stage equalizer which includes a first demodulation stage that processes the received signal and produces initial symbol decisions, and a non-linear equalization second stage that uses the received signal to perform a sequential search in an attempt to improve upon the initial symbol decisions where if able to improve upon the initial symbol decisions then an output sequence is obtained from the sequential search and if not able to improve upon the sequence metric threshold then the output sequence is the initial symbol decisions. | 04-11-2013 |
20130107994 | JOINT DEMODULATION AND INTERFERENCE SUPPRESSION USING SERIAL LOCALIZATION WITH INDECISION | 05-02-2013 |
20130136210 | Metric Corrections for Demodulators Using Serial Localization with Indecision - Demodulation methods and apparatus for a multi-stage SLI demodulator are disclosed. Residual signals from each demodulation stage are modeled as finite sets of unresolved signals and a new metric is introduced for use in search of best candidate symbol estimates. The metric may be evaluated based on a probability distribution function of the residual signals or a probability mass function of the unresolved signals. The metric may also be approximated by the sum of a conventional Euclidean metric and a correction metric. The best candidate symbol estimates generated from each stage of the multi-stage SLI demodulator are summed to form cumulative symbol estimates. | 05-30-2013 |
20130148634 | Asymmetric Resource Sharing Using Stale Feedback - With the asymmetric resource sharing disclosed herein, a base station transmits fewer information symbols at some transmission times to one or more mobile terminals than to other mobile terminals at other transmission times. After transmitting the information symbols, the base station receives channel estimates from the mobile terminals, which the base station then use to generate synthesized signals representing estimates of the signals received at the mobile terminals. The base station subsequently combines complementary pairs of the synthesized signals to generate combined signals and transmits at least one of the combined signals to implement at least one virtual antenna for at least one of the mobile terminals. | 06-13-2013 |
20130237212 | PRECODING WITH PARTIALLY STALE FEEDBACK - A system and method in which a base station treats the Channel State Information (CSI) from wireless terminals as only partially-stale, and exploits this partially-stale CSI to predict the current channel from old estimates of the channel. The predicted channel is then used to design a precoder. The base station shapes the transmitted signal with the precoder so as to match it as closely as possible to the current channel. Particular embodiments thus combine the benefits of the stale feedback scheme with precoding to match the channel. Consequently, the signal received at a terminal is better conditioned, thereby providing a greater overall boost in performance of the communication arrangement between the base station and the terminal. The usage of partially-stale CSI can be important for dense networks with a large number of simple terminals. | 09-12-2013 |
20130259164 | ENHANCED METRICS FOR DEMODULATION AND SOFT INFORMATION GENERATION IN THE PRESENCE OF A NON-CONSTANT ENVELOPE MODULATED INTERFERER - Systems and methods utilize enhanced metrics for demodulation and/or soft bit information generation in the presence of a non-constant envelope modulated interfering signal. In one embodiment, a receiver includes a downconverter and a demodulator. The downconverter receives a radio frequency signal comprising a desired signal, noise, and a non-constant envelope modulated interfering signal, and downconverts the radio frequency signal to provide a downconverted signal. The demodulator demodulates the downconverted signal based on a demodulation metric that models the non-constant envelope modulated interfering signal as a stationary non-Gaussian random process with a probability distribution derived from a modulation constellation of a modulation used for the non-constant envelope modulated interfering signal. In one embodiment, the demodulator outputs demodulated symbols. In another embodiment, the demodulator outputs soft bit information. | 10-03-2013 |
20140092784 | Extension Carrier for ARQ - According to one or more embodiments described and claimed herein, HARQ acknowledgements, re-transmissions, and related signaling (e.g., channel quality reports) are performed on a Re-transmission Extension Carrier (REC) separate from the primary downlink traffic carrier(s). In various embodiments, as explained herein, the REC may comprise an aggregated wireless communication network channel, which may be cross-channel scheduled or may have its own scheduler. The REC may be Frequency Domain Duplex (FDD) or Time Domain Duplex (TDD). The REC may be dedicated to a main downlink carrier, or may be shared across a plurality of aggregated component carriers. The REC may be transmitted from the same base station as one or more associated main carriers, or from a different base station. A shared REC may be operated in cooperative or contention modes. The REC may be implemented in unlicensed spectrum. | 04-03-2014 |
20140092944 | PILOT STRUCTURE TO SUPPORT A VIRTUAL DIVERSITY RECEIVER SCHEME - Devices and methods for providing a pilot structure for a virtual diversity receiver (VDR) scheme are disclosed. In order to improve the performance of a communication network, a VDR scheme is implemented to facilitate the exchange of information between user devices via an intermediary device, such as a base station. The pilot structure supports estimation of channel parameters at the receivers, including true channel taps, as well as estimations of the virtual channels created by the VDR scheme in order to enable the use of receive-diversity signal processing techniques. | 04-03-2014 |
20140092950 | RATE CONTROL FOR A VIRTUAL DIVERSITY RECEIVER - Devices and methods for determining transmission rates based on a virtual diversity receiver (VDR) scheme are disclosed. Performance is improved through determination of appropriate transmission rates, which are determined based on one or more signal to interference plus noise ratios (SINRs). The SINRs are calculated using virtual noise and channel coefficient values obtained as part of the VDR scheme. Utilizing an underlying pilot structure a user device may receive several sets of symbols. These symbols are then used to obtain both real and virtual channel noise power values and channel coefficients. These values and coefficients are then used to determine first and second SINR values indicative of one or more channels in the communication network. These SINR values may correlate to transmission rates (modulation order and/or coding rate). The SINRs may be sent to a base station, or the user device itself may determine one or more transmission rates. | 04-03-2014 |
20140135028 | SCHEDULING AND RATE CONTROL COORDINATION ACCOUNTING FOR INTERFERENCE CANCELLATION AT A MOBILE TERMINAL - Devices and methods for scheduling and interference cancellation that consider the interference cancellation capability of user equipment (UEs) are disclosed. Using reduced-rate sub-frame (or resource block) strategies, the transmission data rate to a scheduled user in a given cell may be reduced to ensure effective interference cancellation performance at the receiver of a co-scheduled user in another cell. By taking advantage of interference mitigation at one or more terminals, a scheduler may improve network spectral efficiency compared to existing inter-cell interference cancellation schemes, including almost blank sub-frame (ABS), further enhanced inter-cell interference coordination (FeICIC), and other resource partitioning schemes, such as reduced power sub-frames or frequency domain resource partitioning. | 05-15-2014 |
Patent application number | Description | Published |
20090087490 | EXTENDED RELEASE FORMULATION AND METHOD OF TREATING ADRENERGIC DYSREGULATION - A composition and method of treating adrenergic dysregulation by administering the composition is disclosed, wherein the composition comprises a α | 04-02-2009 |
20100063123 | EXTENDED RELEASE FORMULATION AND METHOD OF TREATING ADRENERGIC DYSREGULATION - A composition and method of treating adrenergic dysregulation by administering the composition is disclosed, wherein the composition comprises a a2-adrenergic receptor agonist; a pharmaceutically acceptable hydrophilic matrix and a release-retardant of a metal alkyl sulfate. In embodiments, the composition provides a sustained release of the agonist, wherein after administration of the composition no more than once about every 12 hours to a subject having a steady state plasma concentration of the a2-adrenergic receptor agonist, the agonist's plasma concentration peak-to-trough ratio is no greater than about 1.9. | 03-11-2010 |
20100172991 | Extended Release Formulation and Methods of Treating Adrenergic Dysregulation - A composition and method of treating adrenergic dysregulation by administering the composition is disclosed, wherein the composition comprises a α | 07-08-2010 |
20110245314 | Extended Release Formulation and Methods of Treating Adrenergic Dysregulation - A composition and method of treating adrenergic dysregulation by administering the composition is disclosed, wherein the composition comprises a α | 10-06-2011 |
20120142769 | METHODS FOR TREATING OR PREVENTING FATIGUE - The present invention relates to the use of compounds of the invention for treatment and/or prevention of fatigue, including fatigue associated with diseases or treatments. | 06-07-2012 |
20120252793 | INTRANASAL BENZODIAZEPINE PHARMACEUTICAL COMPOSITIONS - The present invention generally relates to intranasal pharmaceutical compositions comprising a benzodiazepine and methods of use thereof that can provide a therapeutic effect without a decrease in blood pressure and/or pulse after administration of the pharmaceutical composition. | 10-04-2012 |
20140128381 | Intranasal Benzodiazepine Pharmaceutical Compositions - The present invention generally relates to intranasal pharmaceutical compositions comprising a benzodiazepine and methods of use thereof that can provide a therapeutic effect without a decrease in blood pressure and/or pulse after administration of the pharmaceutical composition. | 05-08-2014 |
20140243406 | Methods for Treating or Preventing Fatigue - The present invention relates to the use of compounds of the invention for treatment and/or prevention of fatigue, including fatigue associated with diseases or treatments. | 08-28-2014 |
20140275244 | Treatment of Cataplexy - The present invention relates to a method of treating cataplexy in a subject in need thereof, comprising administering to the subject a therapeutically effective amount of certain carbamate compounds. | 09-18-2014 |
20150018414 | Promotion of Smoking Cessation - The present invention relates to a method for promoting cessation or reduction in the smoking and/or chewing of tobacco or nicotine-containing products in a subject in need thereof, comprising administering to the subject an effective amount of certain carbamate compounds. The invention further relates to a method for preventing relapse smoking and/or chewing of tobacco or nicotine-containing products in a subject in need thereof, comprising administering to the subject a therapeutically effective amount of certain carbamate compounds. | 01-15-2015 |
20150025136 | Treatment for Obesity - The present invention relates to a method for treating or preventing obesity in a subject in need thereof, comprising administering to the subject a therapeutically effective amount of certain carbamate compounds. The invention further relates to methods for reducing body weight and/or reducing food intake in a subject in need thereof, comprising administering to the subject a therapeutically effective amount of certain carbamate compounds. | 01-22-2015 |