摘要:
The subject matter disclosed herein provides methods and apparatus for determining a singular value decomposition, providing feedback from a client station to a base station, and closed loop operation of a wireless system implementing multiple-input multiple-output (MIMO). The method may include determining one or more singular vectors using a closed form singular value decomposition. The one or more determined singular vectors may be provided to a precoder at the base station as feedback. The method may include aligning a phase of one or more singular vectors. The method may also include determining, at a client station, a plurality of singular vectors for channels used in a MIMO transmission from a base station to a client station. The client station may provide an indication to the base station regarding whether to use a singular value decomposition or a uniform channel decomposition. Related systems, apparatus, methods, and/or articles are also described.
摘要:
The subject matter disclosed herein provides methods and apparatus for determining a singular value decomposition, providing feedback from a client station to a base station, and closed loop operation of a wireless system implementing multiple-input multiple-output (MIMO). The method may include determining one or more singular vectors using a closed form singular value decomposition. The one or more determined singular vectors may be provided to a precoder at the base station as feedback. The method may include aligning a phase of one or more singular vectors. The method may also include determining, at a client station, a plurality of singular vectors for channels used in a MIMO transmission from a base station to a client station. The client station may provide an indication to the base station regarding whether to use a singular value decomposition or a uniform channel decomposition. Related systems, apparatus, methods, and/or articles are also described.
摘要:
The subject matter disclosed herein provides methods and apparatus for determining a singular value decomposition, providing feedback from a client station to a base station, and closed loop operation of a wireless system implementing multiple-input multiple-output (MIMO). The method may include determining one or more singular vectors using a closed form singular value decomposition. The one or more determined singular vectors may be provided to a precoder at the base station as feedback. The method may include aligning a phase of one or more singular vectors. The method may also include determining, at a client station, a plurality of singular vectors for channels used in a MIMO transmission from a base station to a client station. The client station may provide an indication to the base station regarding whether to use a singular value decomposition or a uniform channel decomposition. Related systems, apparatus, methods, and/or articles are also described.
摘要:
A washing machine includes a washing-basket assembly including a rotatable shaft configured to be rotatably supported. A gear assembly is configured to engage with the rotatable shaft. A foot-peddle assembly is coupled to the gear assembly. This is done in such a way that the foot-peddle assembly, in use, urges a rotatable reciprocating movement of the gear assembly, the rotatable shaft and the washing-basket assembly.
摘要:
An electronic device may have a cavity antenna. The cavity antenna may have a logo-shaped dielectric window. An antenna resonating element for the cavity antenna may be formed from conductive traces on a printed circuit board. An antenna resonating element may be formed from the traces. The antenna resonating element may be mounted on an antenna support structure. A conductive cavity structure for the cavity antenna may have a planar lip that is mounted flush with an interior surface of a conductive housing wall. The cavity structure may have more than one depth. Shallower planar portions of the cavity structure may lie in a plane. The antenna resonating element may be located between the plane of the shallow cavity walls and an external surface of the conductive housing wall.
摘要:
An electronic device may have a housing in which an antenna and a proximity sensor formed from flex circuit structures are mounted. The flex circuit structures may include first and second flex circuit layers. The first and second flex circuit layers may include metal antenna structures and metal proximity sensor electrode structures. Solder may be used to attach electrical components to the flex circuit layers and may be used to electrically connect metal structures on the first and second flex circuit layers to each other. The first and second flex circuit layers may be laminated together using a compressive fixture. The compressive fixture may have a first fixture with a convex surface and a second fixture with a concave surface so that the laminated flex circuit layers are provided with a bend.
摘要:
An electronic device may have a housing in which an antenna and a proximity sensor formed from flex circuit structures are mounted. The flex circuit structures may include first and second flex circuit layers. The first and second flex circuit layers may include metal antenna structures and metal proximity sensor electrode structures. Solder may be used to attach electrical components to the flex circuit layers and may be used to electrically connect metal structures on the first and second flex circuit layers to each other. The first and second flex circuit layers may be laminated together using a compressive fixture. The compressive fixture may have a first fixture with a convex surface and a second fixture with a concave surface so that the laminated flex circuit layers are provided with a bend.
摘要:
Methods and apparatuses are provided for determining a transmission power cap for one or more devices based at least in part on pathloss measurements to one or more access points received from the one or more devices. A common transmission power cap can also be computed for assigning to devices communicating with an access point, and the transmission power cap for a given device can be adjusted when the transmission power is at or a threshold level from the common power cap to conserve signaling in the wireless network. Adjustment of the transmission power cap can additionally or alternatively be based on a received power at an access point related to signals from the device, an interference report from one or more access points, and/or the like.
摘要:
Logo antennas are provided for electronic devices such as portable computers. An electronic device may have a housing with conductive housing walls. A logo antenna may be formed from an antenna resonating element such as a patch antenna resonating element, a monopole antenna resonating element, or other antenna resonating element structure. A conductive cavity may be placed behind the antenna resonating element. A dielectric antenna window that serves as a logo may be used to cover the antenna resonating element. The dielectric antenna window may be mounted in an opening in the conductive housing walls. A positive antenna feed terminal may be coupled to the antenna resonating element. A ground antenna feed terminal may be coupled to the cavity and portions of the conductive housing walls. The dielectric antenna window may be shaped in the form of a logo.
摘要:
Disclosed herein are wall flow reactors that are suitable for the production of hydrogen gas from hydrocarbon and/or its derivative feed streams. The wall flow reactors are generally comprised a monolithic honeycomb substrate defining a plurality of cell channels bounded by porous channel walls that extend longitudinally from an upstream inlet end to a downstream outlet end; wherein a first portion of the plurality of cell channels are plugged at the downstream outlet end to form inlet cell channels and a second portion of the plurality of cell channels are plugged at the upstream inlet end to form outlet cell channels. A plurality of catalyst layers are positioned within at least a portion of the plurality of cell channels and comprise at least a first catalyst layer and a second catalyst layer. Also disclosed are methods for treating reactant feed streams.