Nec Corporation

Osaka University

The Doshisha

Nitto-denko Corporation

Takumi Takahashi

Kazushi Muraoka

Naoto Ishii

Shinsuke Ibi

Youzou Yano

Seiichi Sampei

Takanobu Doi

Tomoyuki Kasagi

Kenichi Nishikawa

A ventilation componentincludes a ventilation pathfor allowing ventilation between an inner spaceand an outer spaceof a housing. The ventilation pathis a path for allowing ventilation between the internal spaceand the outer spacewhen the ventilation componentis attached to an edge. The ventilation componentincludes a supporting portion, a gas-permeable membrane, a protruding portion, and a sealing member. The supporting portionsurrounds the ventilation path. The gas-permeable membraneis bonded to the supporting portionand closes the ventilation pathin a ventilatable manner. The protruding portionis a part having a tubular shape, the part being arranged to protrude from the supporting portionand surround one end of the ventilation path, the part being configured to be in contact with the edgewhen the ventilation componentis attached to the edge. The ventilation componentsatisfies a requirement 0.7≤D/W≤1.3.

Ventilation component

A ventilation structure (a) includes a housing () and a ventilation component (). The housing () has a first surface () defining a lateral surface of a columnar space () in an attachment hole (). The ventilation component () is attached to the housing () to close the attachment hole (). The ventilation component () has a ventilation path () between an inner space () of the housing () and an outer space () of the housing (). The ventilation component () includes a supporting portion (), a gas-permeable membrane (), a protruding portion (), and a sealing member (). The supporting portion () surrounds the ventilation path () in plan view. The protruding portion () protrudes from the supporting portion () toward the inner space () of the housing (), and is inserted into the attachment hole (). The sealing member () is disposed on an outer periphery of the protruding portion (), and seals a gap between the first surface () and the protruding portion ().

Ventilation structure

A ventilation component () includes a supporting portion (), a gas-permeable membrane (), and a sealing member (). The supporting portion () has a ventilation path () and an annular surface (). When the ventilation component () is attached to a housing (), the ventilation path () extends in a direction perpendicular to an opening plane of an opening (), and extends through the supporting portion (). The annular surface () faces an outer surface () of the housing (), and surrounds the ventilation path () in plan view. The gas-permeable membrane () closes the ventilation path () in a ventilatable manner. The gas-permeable membrane () allows a gas to pass therethrough in a thickness direction of the gas-permeable membrane (). The sealing member () is sandwiched between the outer surface () of the housing () and the annular surface () to seal a gap between the outer surface () of the housing () and the annular surface (). The sealing member () includes at least one selected from the group consisting of a pressure-sensitive adhesive, an adhesive, and a cured product of an adhesive.

A wireless receiving apparatus generates an N'&#xd7;B&#x2032; weight matrix W whose columns are orthogonal to each other by decomposing an estimated N&#x2032;&#xd7;M&#x2032; channel matrix into the N&#x2032;&#xd7;B&#x2032; weight matrix W and a B&#x2032;&#xd7;M&#x2032; matrix containing two or more non-zero matrix elements in each column, where B&#x2032; is an integer less than or equal to N&#x2032;-1 and greater than or equal to M&#x2032;. Alternatively, the wireless receiving apparatus generates a combination of an N&#x2032;&#xd7;B&#x2032; sub-weight matrix Wand at least one second sub-weight matrix, where the product of the sub-weight matrix Wwith the at least one second sub-weight matrix is equal to the weight matrix W. The wireless receiving apparatus performs receive beamforming on received signals of N&#x2032; receiving antennas using the weight matrix W or the sub-weight matrix W. The wireless receiving apparatus then performs a BP algorithm using receive-beamformed signals.

Wireless receiving apparatus and method thereof

A computer system includes at least one memory and at least one processor coupled to the at least one memory and configured to execute one or more sets of instructions. The one or more sets of instructions, when executed by the at least one processor, cause the computer system to provide virtualized radio access network functions including executing a BP algorithm and provide controller functions including adjusting the total number of iterations of the BP algorithm depending on available computing resources of the computer system.

Computer system and method therefor

A method implemented in a computer system includes training a network, which is obtained by unfolding an iterative algorithm for demodulation or demodulation and decoding, using a machine learning technique with a loss function that takes into account non-Gaussianity of a log-likelihood ratio (LLR) distribution calculated from an output of the network. The method further includes producing a first set of learned parameters of that iterative algorithm.

Receiver apparatus, and method for producing parameters for demodulation

A BP detector of a wireless receiver apparatus reads a first parameter set or a second parameter set. The first parameter set includes a plurality of scaling factors and a plurality of damping factors learned together using a deep learning technique. The second parameter set includes a plurality of scaling factors and a plurality of node selection factors learned together using a deep learning technique from a memory. The BP detector executes an iterative BP algorithm that uses the first parameter set or the second parameter set in order to perform multi-user detection.

Growing community of inventors

Osaka, Japan

Takumi Takahashi