Abstract: A sink device in a Wireless Display (WD) system may send performance information feedback to a source device to adjust media data processing at the source device. The performance information feedback may include performance indicators of the WD system that are capable of being measured or calculated at the sink device based on received media data or request to adjust the transmission of media data. For example, the performance information feedback may include one or more of round trip delay, delay jitter, packet loss ratio, error distribution, and received signal strength indication (RSSI). The feedback channel may be piggybacked on a reverse channel architecture referred to as the User Input Back Channel (UIBC) implemented between the source device and the sink device.

Abstract: The present disclosure provides polyimide fibers with kidney-shaped cross-section and their preparation methods thereof, falling within the technical field of polyimide fiber. Polyimide fibers with kidney-shaped cross-sections are prepared by a continuous, integrated approach, starting from a polyamic acid solution prepared by reacting an aromatic dianhydride with an aromatic diamine. PAA nascent fibers with kidney-shaped cross-sections are obtained by adopting a spinneret having circular orifices under wet spinning process. The kidney-shaped cross-sections are obtained by varying the processing condition, including spinning speed, coagulation bath composition, coagulation temperature, and depth of coagulation bath. After washing and drying, polyamic acid nascent fibers are converted to polyimide fibers with kidney-shaped cross-sections under thermal curing. The integrated preparation methods are suitable for mass industrial production.

Abstract: System and methods are disclosed for optimizing wireless communication for a plurality of mobile wireless devices. The system uses beamforming vectors or precoders having a structure optimal with respect to the weighted sum rate in a multi-cell orthogonal frequency division multiple access (OFDMA) downlink. A plurality of base stations communicate with the mobile devices and all base stations perform a distributed non-convex optimization exploiting the determined structure.

Abstract: System and methods are disclosed for optimizing wireless communication for a plurality of mobile wireless devices. The system uses beamforming vectors or precoders having a structure optimal with respect to the weighted sum rate in a multi-cell orthogonal frequency division multiple access (OFDMA) downlink. A plurality of base stations communicate with the mobile devices and all base stations perform a distributed non-convex optimization exploiting the determined structure.

Abstract: A method implemented in a base station used for a downlink multi-user (MU) multi-input multi-output (MIMO) system is disclosed. The method includes receiving an indication of a quantized matrix from each of a plurality of scheduled user equipments, precoding data streams for the plurality of scheduled user equipments, transmitting the precoded data to the plurality of scheduled user equipments. Other methods and some apparatuses for wireless communications also are disclosed.

Abstract: A method for wireless encoding includes encoding wireless multiple input and multiple output signals in accordance with a codebook being one of a discrete codebook restricting elements of codebook entries to be within a predetermined finite set of complex numbers and a constant amplitude codebook including each entry in its codebook having equal column norm and equal row norm. In a preferred embodiment the digital codebook further includes restricting elements of a finite set in the discrete codebook to be in the form of ka+jkb for a base-k computer and the constant amplitude codebook further includes being obtained through a series of successive householder transformations. In a preferred embodiment the codebook is configured as one of a constrained codebook in which the codebook is configured for multiple scenarios and a discrete codebook.

Abstract: This disclosure relates to techniques to establish a multicast communication session between a source device and multiple sink devices in a Wireless Display (WD) system. Two or more sink devices may be interested in receiving the same media data from the source device. According to the techniques, the source device establishes a multicast session with the sink devices in the WD system, and sends a single copy of multicast media data for the multicast session to the interested sink devices using a receiving multicast port. The source device selects a receiving multicast port number as a destination identifier for each multicast session. The sink devices interested in receiving the media data of a given multicast session bind on the receiving multicast port for the multicast session. This disclosure describes several exemplary multicast subscription procedures to ensure correct binding on the receiving multicast port at each of the sink devices.

Abstract: Methods and systems for subpacket generation using a convolutional turbo code in hybrid automatic repeat request re-transmissions that includes separating a codeword into subblocks of bits, interleaving the subblocks, and performing a permutation to group the bit streams and rearrange a symbol constellation such that bits are assigned to bit positions based on a number of re-transmissions.

Abstract: A double tilt sample holder for in-situ measuring mechanical and electrical properties of microstructures in transmission electron microscope (TEM) is provided. The sample holder includes a home-made hollow sample holder body, a sensor for measuring mechanical/electrical properties, a pressing piece, a sample holder head, a sensor carrier. The sensor for measuring mechanical/electrical properties is fixed on the sensor carrier on the sample holder head by the pressing piece, while the sensor carrier is connected to the sample holder head through a pair of supporting shafts located on sides of the sample holder head. The sensor carrier can tilt within the plane perpendicular to the ample holder head by revolving around the supporting shafts (i.e. tilting along Y axis at an angle of ±30°). The sample holder also allows obtaining mechanical/electrical parameters concurrently.

Abstract: A method for demodulating signals in a multi-input multi-output (MIMO) receiver includes obtaining a transformed vector by a coordinate transformation of a received observation vector using a unitary matrix determined through QR decomposition of an estimated channel matrix; maintaining a list containing nodes along with a cost metric for each node; using the list to generate soft-outputs in the form of log-likelihood ratios (LLRs) for selected symbols of interest, based on the transformed vector and a lower triangular matrix determined through QR decomposition of the estimated channel matrix and the constellations to which the input symbols belong.

Abstract: Construction of base matrices for quasi-cyclic (QC)-low density parity-check codes (LDPC) using two novel metrics are described. Design constraints based on a local girth and a local minimum approximate cycle extrinsic message degree (ACE) of variable nodes in the base matrix are employed. In particular, various local girth and local minimum ACE constraints can be set for different lift sizes. Additionally, the base matrix can be configured as a universal base matrix from which different base matrices having different corresponding lift sizes that comply with the design constraints can be obtained and used to generate QC-LDPC codes.

Abstract: Systems and methods are for generating a codebook by: generating a multi-resolution codebook by selecting a common precoder index from a low resolution codebook for a group of adjacent resource blocks (RB)s and for each RB within the group, selecting a high-resolution codebook to fine-tune each RB precoder; and generating feedback for the multi-resolution codebook by quantizing channel state variations.

Abstract: This disclosure relates to techniques for enabling a sink device in a Wireless Display (WD) system to control operation of the source device and media data sent from the source device. In one example, a method comprises establishing a communication session between a source device and at least one sink device capable of operating in a Minimal Cognitive (MC) mode, wherein the MC mode includes one or more levels, receiving a signal from the sink device to activate a particular level of the MC mode based on trigger information detected at the sink device, and sending media data to the sink device according to an altered operation of the source device for the particular level of the MC mode.

Abstract: Technologies are generally disclosed for gathering path data from a massively multiplayer on-line role-playing game to determine a path through a mapping plane that may be a real-world or virtual-world representation.

Abstract: Systems, methods, and media for reducing femtocell interference are provided. In some embodiments, systems for reducing femtocell interference are provided, the systems comprising: at least one hardware processor that: estimates a total path loss between a macrocell user (MU) and a mobile base station (MBS); estimates a path loss from the MU user to a femtocell access point (FAP); determines whether the MU can meet a first target signal to interference plus noise ratio (SINR); determines whether a transmission from the MU will prevent a femtocell user (FU) of the FAP from achieving a second target SINR; and restricts the MU to using subcarriers not used by the FAP when it is determined that the MU cannot meet the first target SINR and/or it is determined that the transmission from the MU will prevent the FU from achieving the second target SINR.

Abstract: Compound of Formula (I): are described, along with pharmaceutically acceptable salts thereof, compositions containing the same, and methods of use thereof in the treatment of cancer.

Abstract: Compounds, pharmaceutical compositions and methods are provided that are useful in the treatment of CDK4-mediated disorders, such as cancer. The subject compounds are gem-disubstituted or spirocyclic pyridine, pyrimidine and triazine derivatives.

Abstract: Systems and methods are disclosed to allocate resources in discrete Fourier transform spread orthogonal frequency division multiple access (DFT-S-OFDMA) networks, which involve determining a reward for each user when assigned a frequency chunk (FC) of subcarriers, where each FC is a set of contiguous subcarriers; splitting each user into one or more sub-users, with each sub-user having identical rewards; and assigning resources with a message-passing based FC allocation.

Abstract: Methods and systems for optimizing the utilities of receiver devices in a wireless communication network are disclosed. Precoder design formulations that maximize a minimum worst-case rate or a worst-case sum rate are described for both full base station cooperation and limited base station cooperation scenarios. In addition, optimal equalizers are also selected to optimize the worst-case sum rate.

Abstract: As part of a communication session, a wireless source device can transmit video component data and metadata to a wireless sink device. The wireless source device can intercept the video component data prior to the video component data being rendered by the wireless source device, and the wireless sink device can generate a frame of video data based on the video component data and the metadata.