Abstract: Apparatuses, methods and storage medium associated with identifying a physical distance using audio channels are disclosed herein. In embodiments, an apparatus may include a microphone associated with a first audio channel of a plurality of audio channels and a radio receiver associated with a second different audio channel of the plurality of audio channels. The apparatus may include one or more processors, devices, and/or circuitry to identify an amount of time between times of receipt of first and second representations of a signal received via the microphone over the first audio channel and via the radio receiver over the second audio channel, respectively. The amount of time may be usable to identify a physical distance between references associated with a remote source of the first and second representations and the apparatus, respectively. Other embodiments may be disclosed or claimed.

Abstract: This disclosure relates to an ultrasonic communication device, comprising: an adjustable ultrasonic transmitter, configured to transmit an ultrasonic communication signal according to a first transmission scheme or according to a second transmission scheme; a microphone, configured to generate an audio signal, wherein the audio signal comprises audible artifacts which are based on nonlinearities in the transmission of the ultrasonic communication signal; and a controller, configured to adjust the ultrasonic transmitter based on the audio signal.

Abstract: Apparatuses and methods for wirelessly charging electronic devices are provided. The apparatuses and methods disclosed herein may wirelessly charge electronic devices by causing a power distribution device to send a group short beacon signal to a plurality of micro-PTU-coils; identifying a load on a first micro-PTU-coil of the plurality of micro-PTU-coils using a detected magnetic flux caused by an object being proximate to the first micro-PTU-coil; determining a location of the object using the identified load on the first micro-PTU-coil; causing the power distribution device to send a group long beacon signal to the plurality of micro-PTU-coils; receiving, from the object, an advertisement, the advertisement comprising an indication of a coupling strength between the first micro-PTU-coil and the object; determining that the object is an electronic device; and determining to apply a current to the first micro-PTU-coil using the location of the electronic device and the coupling strength data.

Abstract: A data transmitting device predicts wireless channel conditions based on certain transmission parameters in which data packets are transmitted. The transmission parameters directly corresponding to wireless channel conditions. Based on the parameters, a video encoding bit rate at a video encoder of the transmitting device may be adjusted to support the wireless channel conditions.

Abstract: An embodiment of the present invention provides a method, comprising using an adaptive codebook for beamforming for communications in wireless networks.

Abstract: A method for determining orientation of an electronic device relative to another electronic device is described. The method includes synchronizing internal clock of a first electronic device with internal clock of a second electronic device using electromagnetic signals communicated between the first electronic device and the second electronic device, sending two or more sound waves from the second electronic device, receiving the two or more sound waves at the first electronic device, and calculating orientation of the first electronic device relative to the second electronic device based on a difference in time of arrival of the two or more sound waves at the first electronic device. The first electronic device and the second electronic device each have at least one transceiver configured to send and receive electromagnetic signals. The first electronic device has two or more acoustoelectric transducers and the second electronic device has one or more acoustoelectric transducer.

Abstract: An embodiment of the present invention provides a method, comprising optimizing the location and configuration of relay stations in a wireless network that includes at least one base station and at least one relay station by taking into account at least one or more of the following: the distinct antenna heights of said at least one base station and said at least one relay station; the data dependency between said at least one relay station and said at least one base station; the service outage of said wireless network; and the network throughput of said wireless network.

Abstract: A base station may transmit at varied power levels. Subscriber stations receiving the power levels can transmit noise information back to the base station. As a result, co-channel interference can be determined from the varied power transmissions, either in the base station or in the subscriber station. In addition, in some embodiments, the transmissions may include different phases so that the phase of the co-channel interference may be determined as well.

Abstract: An apparatus and method suitable to estimate impairments of wireless signals, including both noise and interference of the wireless signals are disclosed herein. The noise of the wireless signals may be caused by thermal noise and platform noise. An adaptive scheme may dynamically switch between estimating interference only or the combined noise and interference. Other embodiments may be disclosed or claimed.

Abstract: Techniques are described that can be used to perform one or more of the following actions in order to reduce signal interference between WLAN and BlueTooth radios that are proximate to one another. One action is to selectively reduce a filter bandwidth in a WLAN radio applied to a received WLAN radio signal to reduce BlueTooth signal interference. An additional or alternative action is to selectively indicate a WLAN radio channel bandwidth larger than a channel bandwidth used for the WLAN radio so that the BlueTooth radio avoids transmitting over the indicated channel bandwidth. An additional or alternative action is to selectively reduce BlueTooth transmitter power in response to antenna isolation between BT and WLAN radio being less than a first threshold in order to reduce the likelihood of WLAN radio front end saturation.

Abstract: A first N×M codebook of a first rank M may be used to generate a second N×(N?M) codebook of a second rank (N?M). This second codebook is both orthogonal and complementary to the first codebook. In practice, this may reduce storage requirements in closed-loop MIMO beamforming, because the second codebook may be dynamically generated as needed by a base station and/or a mobile station. In some cases, a higher rank beamforming matrix or precoding matrix may be formed from a lower rank (e.g., one or two) beamforming matrix or precoding matrix. Also, a novel way to generate the rotation matrix Qv(t-1) is disclosed.

Abstract: An embodiment of the present invention provides a wireless station (STA) capable of implicit feedback in a wireless local area network, comprising at least one power amplifier, a plurality of antennas capable of being connected with said at least one power amplifier, and a switch capable of switching the connection between said plurality of antennas and said at least one power amplifier thereby enabling said wireless station to sound a complete channel matrix for an access point (AP) in communication with said wireless station (STA).

Abstract: In various embodiments of the invention, a relay station in a wireless communications network may communicate with one or more subscriber stations at the same time and/or on the same frequency that the associated base station is communicating with another relay station in the same network. This contrasts with the conventional technique of devoting one time period or frequency exclusively to communications between the base station and the relay stations, and devoting another time period or frequency exclusively to communications between the relay stations and the subscriber stations.

Abstract: Techniques are described that can be used to perform one or more of the following actions in order to reduce signal interference between WLAN and BlueTooth radios that are proximate to one another. One action is to selectively reduce a filter bandwidth in a WLAN radio applied to a received WLAN radio signal to reduce BlueTooth signal interference. An additional or alternative action is to selectively indicate a WLAN radio channel bandwidth larger than a channel bandwidth used for the WLAN radio so that the BlueTooth radio avoids transmitting over the indicated channel bandwidth. An additional or alternative action is to selectively reduce BlueTooth transmitter power in response to antenna isolation between BT and WLAN radio being less than a first threshold in order to reduce the likelihood of WLAN radio front end saturation.

Abstract: An apparatus and method suitable to estimate impairments of wireless signals, including both noise and interference of the wireless signals are disclosed herein. The noise of the wireless signals may be caused by thermal noise and platform noise. An adaptive scheme may dynamically switch between estimating interference only or the combined noise and interference. Other embodiments may be disclosed or claimed.

Abstract: A wireless network access point can operate as a closed-loop MIMO device when communicating with a station that is operating as an open-loop MIMO device. Transmit/receive chains in the access point are calibrated to support aggregate channel reciprocity.

Abstract: A first N×M codebook of a first rank M may be used to generate a second N×(N?M) codebook of a second rank (N?M). This second codebook is both orthogonal and complementary to the first codebook. In practice, this may reduce storage requirements in closed-loop MIMO beamforming, because the second codebook may be dynamically generated as needed by a base station and/or a mobile station. In some cases, a higher rank beamforming matrix or precoding matrix may be formed from a lower rank (e.g., one or two) beamforming matrix or precoding matrix. Also, a novel way to generate the rotation matrix Qv(t?1) is disclosed.

Abstract: An embodiment of the present invention provides a wireless station (STA) capable of implicit feedback in a wireless local area network, comprising at least one power amplifier, a plurality of antennas capable of being connected with said at least one power amplifier, and a switch capable of switching the connection between said plurality of antennas and said at least one power amplifier thereby enabling said wireless station to sound a complete channel matrix for an access point (AP) in communication with said wireless station (STA).

Abstract: In various embodiments of the invention, a relay station in a wireless communications network may communicate with one or more subscriber stations at the same time and/or on the same frequency that the associated base station is communicating with another relay station in the same network. This contrasts with the conventional technique of devoting one time period or frequency exclusively to communications between the base station and the relay stations, and devoting another time period or frequency exclusively to communications between the relay stations and the subscriber stations.

Abstract: An embodiment of the present invention provides a method, comprising using an adaptive codebook for beamforming for communications in wireless networks.