Abstract:
A wireless network communication device, comprising a processing component adapted to in each of a plurality of iterations: receiving from a target wireless network communication device an error score associated with an identified wireless bandwidth; computing a plurality of sub-band weights associated with a plurality of wireless sub-bands composing the identified wireless bandwidth, each sub-band weight computed using a signal quality value associated with the identified wireless bandwidth and a sub-band signal quality value associated with respective wireless sub-band; computing a plurality of sub-band error scores associated with the plurality of wireless sub-bands, each sub-band error score computed using the error score and respective sub-band weight; identifying a preferred sub-band error score of the plurality of sub-band error scores; and transmitting to the target wireless network communication device a plurality of messages modulated using the wireless sub-band associated with the preferred sub-band error.
Abstract:
A transmitter, comprising a processor adapted to convert a primary sequence of modulation symbols into a primary signal, using a primary pulse shape, convert an auxiliary sequence of modulation symbols, created from the primary sequence, to an auxiliary signal using an auxiliary pulse shape and create a joint output signal based on the primary signal and on the auxiliary signal.
Abstract:
The present application provides a method for determining a CP. A STA performs channel estimation, determines a CP value according to the result of channel estimation, and sends indication information to an AP, wherein the indication information is used for indicating the CP value, so that the AP may choose a suitable CP according to the indication information. Therefore, overhead may be reduced and system throughput may be optimized.
Abstract:
The disclosure relates to an active balun (300), including: a first terminal (303); a second terminal (305, 306); a first transistor (M1) comprising a first current path (D1-S1, l DS ) and a control path (G1-S1, V GS ) for controlling the first current path (D1-S1, l DS ), wherein the first current path (D1-S1, l DS ) is coupled between the first terminal (303) and the second terminal (305, 306) and the control path (G1-S1, V GS ) is coupled between a reference potential (304b, G1) and the first terminal (303, S1); and an inverter (301) comprising a second current path (S2-D2-D3-S3), wherein the second current path (S2-D2-D3-S3) is coupled in parallel to the first current path (D1-S1) of the first transistor (M1).
Abstract:
The present invention relates to a device (100) for Wireless-Local-Area-Network (WLAN), -communication to a station, in particular to a vehicle, wherein the device is configured to, determine a disturbance of the WLAN-communication, in particular a Doppler spread; and define a packet-length of the WLAN-communication based on the disturbance.
Abstract:
According to some embodiments of the invention there is provided an apparatus adapted to update a contention window (CW). The apparatus comprises a wireless local area network (WLAN) transceiver adapted to receive, during a monitoring period, two or more transmissions from two or more WLAN devices. The apparatus comprises a processor adapted to perform the following actions. The processor is adapted to identify transmission timing of two or more data frames encoded in some of the transmissions during the monitoring period. The processor is adapted to identify interlude timing of two or more transmission interludes between the data frames. The processor is adapted to calculate a statistical measure of length of the transmission interludes. The processor is adapted to update a CW value of the WLAN devices according to the statistical measure.
Abstract:
According to an aspect of some embodiments of the present invention there is provided a device (401) for assigning radio channels to radio transceiver devices (431). The device comprises an interface (412) configured to receive two or more radio communication values, each associated with a radio transceiver device (431). The device comprises a processor (402) configured to calculate (404) an ordering of two or more radio transceiver devices based on radio communication values and build (405), according to the ordering, one or more rooted tree representing assignment of available radio channels to first radio transceiver devices (431) according to the ordering. A branch of the rooted tree is selected according to a cost function value calculated along each branch. The processor (402) is configured to assign (409) the available radio channels to the radio transceiver devices (431) according to the selected branch.
Abstract:
A quadrature circulator device includes a four-port quasi-circulator and a four-port quadrature hybrid connected in cascade. The scattering matrix of the quasi-circulator is: S1 and the scattering matrix of the quadrature hybrid is: S2. The fourth port of the quasi-circulator is connected to the fourth port of the quadrature hybrid and the third port of the quasi-circulator is connected to the first port of the quadrature hybrid.
Abstract:
A wireless access point, AP, (110a) is disclosed, which is configured to share a transmission opportunity with at least one further wireless access point (110b) within a Multi-AP set using a Coordinated Beamforming, C-BF, scheme. The wireless AP (110a) comprises a processing circuitry (111) configured to generate a C-BF Null Data PPDU Announcement, C-BF NDPA, frame, wherein the C-BF NDPA frame comprises a Multi-AP set identifier. Moreover, the wireless AP (110a) comprises a communication interface (113) configured to transmit the C-BF NDPA frame to one or more wireless stations (120a) associated with the wireless AP (110a) and/or to one or more further wireless stations (120b) associated with the at least one further wireless AP (110b) within the Multi-AP set.
Abstract:
A wireless transceiver (110), in particular wireless access point comprises a communication interface (113) comprising an array of antennas (113a-d), wherein the communication interface (113) is configured to receive at a plurality of times channel state information from a plurality of further wireless transceivers (120), including channel state information at a first time and channel state information at a second time, and to operate the array of antennas (113a-d) with an adjustable precoding configuration. Furthermore, the wireless transceiver (110) comprises a processing circuitry (111) configured to perform a phase alignment of the channel state information at the second time with the channel state information at the first time and to predict a channel state for an upcoming transmission based on the phase aligned channel state information. The processing circuitry (111) is further configured to adjust the adjustable precoding configuration for the upcoming transmission based on the predicted channel state.