Abstract: Methods and apparatus are described for performing Coordinated Spatial Reuse (CoSR) downlink data transmissions by access points of a wireless network. In an embodiment, a first access point (AP) (e.g., a sharing AP) transmits CoSR-related control information to establish a CoSR session with a second AP (e.g., a shared AP) and further transmits a Trigger frame for packet synchronization with the second AP. The first AP further transmits a Request to Send (RTS) frame having a duration field set to a remaining amount of time of a transmission opportunity (TXOP) of the first AP and receives, in response to the RTS frame, a Clear to Send (CTS) frame from the second AP. The first AP further transmits a data PPDU. The CoSR-related control information directs the second AP to transmit a synchronized data PPDU at a reduced power level that is less than the power level of the CTS frame.

Abstract: The present invention relates to a refrigerant composition, including difluoromethane (HFC-32), pentafluoroethane (HFC-125), and trifluoroiodomethane (CF3I) for use in a heat exchange system, including air conditioning and refrigeration applications and in particular aspects to the use of such compositions as a replacement of the refrigerant R-410A for heating and cooling applications and to retrofitting heat exchange systems, including systems designed for use with R-410A.

Abstract: A receiver for a multi-antenna system and a method of generating channel estimations for the multi-antenna system are disclosed. In an embodiment, a receiver for a multi-antenna system comprises a detector configured to detect packets using signals received on a plurality of antennas, and a channel estimator configured to produce channel estimations based on the signals received on the plurality of antennas. The channel estimator is configured to estimate a relative channel with respect to first and second antenna using signals from first and second antennas to derive a relative channel estimation, estimate an antenna power for at least one of the first and second antennas using the signals from at least one of the first and second antennas, and compute channel estimations for the first and second antennas using the relative channel estimation and the antenna power for the at least one of the first and second antennas.

Abstract: Methods for forming an improved refrigeration system that includes an existing refrigeration circuit with a refrigerant having a GWP of greater than 1200 which comprises disconnecting the fluid connection between the existing liquid refrigerant from the existing condenser and evaporator between said existing refrigerant vapor and the suction of the compressor and then establishing a new refrigeration circuit comprising at least one of the evaporators by replacing the removed existing refrigerant with a second refrigerant comprising: (1) from about 30 to about 70% by weight of CF3I; and (2) from about 9% to about 58% by weight of HFO-1234yf; (3) from 1% to about 21.5% by weight of HFC-32.

Abstract: Heat transfer compositions consisting essentially of effective amounts of cis-1-chloro-2,3,3-trifluoropropene (HFO-1233yd(Z)) and a base fluid, and applications thereof as at least a coolant fluid in electronic vehicle (EV) battery thermal management systems (BTMSs)

Abstract: Embodiments of an apparatus and method for wireless communications are disclosed. In an embodiment, a wireless device includes a controller configured to construct an orthogonal matrix, and a wireless transceiver configured to conduct wireless communications based on the orthogonal matrix. The size of the orthogonal matrix is 12×12 or 16×16.

Abstract: Heat transfer compositions, and systems and methods using the composition, comprising: (a) a refrigerant comprising at least about 30% by weight based on all refrigerant components of trans-1-chloro-3,3,3-trifluoropropene (HFCO-1233zd(E)); and at least one compound inhibiting isomerization of said trans-1-chloro-3,3,3-trifluoropropene (HFCO-1233zd(E)) to cis-1-chloro-3,3,3-trifluoropropene (HFCO-1233zd(Z)), said at least one compound being selected from the group consisting of d-limonene, 2,6-diisopropyl naphthalene, ?-pinene, farnesene, ?-terpinene and combinations of two or more of these.

Abstract: Disclosed are cascaded refrigeration systems, comprising: a plurality of refrigeration units, each refrigeration unit containing a first refrigeration circuit, each first refrigeration circuit comprising an evaporator and a heat exchanger, and a second refrigeration circuit; wherein each first circuit heat exchanger is arranged to transfer heat energy between its respective first refrigeration circuit and the second refrigeration circuit.

Abstract: Methods for improving a refrigeration systems comprising modifying the system and replacing existing refrigerant with a replacement refrigerant comprising: (1) at least about 50% by weight of R1234ze(E); (2) greater than 0% to about 11% of HFC-134a, HFC-134, HFC-227ea, HFC-125, and combinations of two or more of these; and (3) from about 4% to about 20% by weight of HFO-1336mzz(E), HFO-1224yd(Z), and combinations of these, wherein said second refrigerant: (i) has an Occupational Exposure Limit (OEL) greater than 400; (ii) is classified as class A1 by ASHRAE Standard 34; and (iii) has a GWP of about 150 or less.

Abstract: The present invention relates to heat transfer compositions comprising 1234yf refrigerant, PAG lubricant and dispersant and to methods of retrofitting R134a MAC systems with using such compositions.

Abstract: The present invention relates to heat transfer compositions comprising 1234yf refrigerant, PAG lubricant and surfactant and to methods of retrofitting R134a MAC systems with using such compositions.

Abstract: Method for retrofitting an existing heat transfer system comprising adding to said existing system a refrigerant consisting essentially of: (i) from about 25% to about 45% by weight of 1,1,1,2-tetrafluoroethane (HFC-134a); (ii) from 25% to about 35% by weight of trans-1,3,3,3-tetrafluoropropene (HFO-1234ze(E)) and/or 2,3,3,3-tetrafluoropropene (HFO-1234yf); and (iii) from about 37% to about 46% by weight of a combination of difluoromethane (HFC-32) and pentafluoroethane (HFC-125), provided that the weight ratio of HFO-32:HFC-125 is from about 1.21:1 to about 0.8:1, wherein the refrigerant preferably is a non-flammable refrigerant having a GWP of 1350 or less.

Abstract: Methods for forming an improved, centralized refrigeration systems by: (a) providing an existing refrigeration circuit with an existing high GWP refrigerant; (b) disconnecting the fluid connection between the existing refrigerant liquid from the condenser and the evaporators; (c) disconnecting the fluid connection between the existing refrigerant vapor from the evaporators and the compressor suction; (d) establishing a new first refrigeration circuit comprising the compressor and the condenser; (e) establishing a new second refrigeration circuit comprising the evaporators by removing existing refrigerant from the evaporators and the disconnected conduits and replacing the removed refrigerant with a second refrigerant comprising at least 50% of R1234ze(E) and being Class Al and having an OEL greater than 400 and a GWP of about 150 or less; and thermally interconnecting the new first refrigeration circuit and the new second refrigeration circuit with an inter-circuit heat exchanger.

Abstract: The present invention relates refrigerants which include HFO-1233zd. HFO-1234ze(E), and HFC-134a and the use of such refrigerants in high temperature heat pumps.

Abstract: A receiver receives a wireless signal comprising a plurality of fields including a legacy short training field (L-STF), legacy long training field (L-LTF), and legacy signal (L-SIG) field transmitted to a plurality of antenna of the receiver. For each sub-band in a receiver bandwidth and when samples of the L-STF is received, a first angle based autocorrelation is performed to determine a group of sub-bands which maximize a magnitude based on the first autocorrelations for one or more sub-bands. For each sub-band in the receiver bandwidth and when samples of the L-LTF is received, a second angle based autocorrelation is then performed to refine the crude bandwidth pattern estimate. One or more signal fields and one or more data fields of the received signal are decoded based on the refined bandwidth pattern estimate.

Abstract: A beamformee receives a channel coefficient matrix H of a wireless communication channel between a beamformer and the beamformee. The channel coefficient matrix is a 2×N complex matrix having two rows corresponding to two antenna of the beamformee and N columns corresponding to N antenna of the beamformer. A real symmetric matrix M is determined based on the matrix H followed by determining eigenvalues and eigenvectors of matrix M. Singular vectors of the matrix H based on the eigenvectors are determined where the singular vectors define a steering matrix. The steering matrix is transmitted to a beamformer, wherein a beam is steered by the beamformer to the beamformee based on the steering matrix.

Abstract: Methods for improving a refrigeration systems comprising modifying the system and replacing existing refrigerant with a replacement refrigerant comprising: (1) at least about 50% by weight of R1234ze(E); (2) greater than 0% to about 11% of HFC-134a, HFC-134, HFC-227ea, HFC-125, and combinations of two or more of these; and (3) from about 4% to about 20% by weight of HFO-1336mzz(E), HFO-1224yd(Z), and combinations of these, wherein said second refrigerant: (i) has an Occupational Exposure Limit (OEL) greater than 400; (ii) is classified as class A1 by ASHRAE Standard 34; and (iii) has a GWP of about 150 or less.

Abstract: The present disclosure relates to a system and method for electronic design automation. Embodiments may include loading one or more libraries, netlists, or constraints associated with an electronic design and loading parasitic data associated with the electronic design. Embodiments may further include performing a self adaptive, infinite depth, path based analysis on at least a portion of the electronic design. Embodiments may also include analyzing the electronic design based upon, at least in part, the self adaptive, infinite depth, path based analysis.

Abstract: The present invention relates to refrigerants which include HFO-1233zd, HFO-1234ze(E), and HFC-152a and the use of such refrigerants in high temperature heat pumps.

Abstract: Systems, apparatuses, methods, and computer program products are provided herein. For example, an embodiment described herein includes a heat pump and a heat pump operations apparatus. In some embodiments, the heat pump may be configured to receive a waste heat input from a data center. The waste heat input is associated with a first temperature. In some embodiments, the heat pump may be configured to receive a power input from a power source. In some embodiments, the heat pump may be configured to generate an asset operations heat output based at least in part on the waste heat input and the power input. The asset operations heat output is associated with a second temperature. The second temperature is greater than the first temperature. In some embodiments, the heat pump may be configured to providing the asset operations heat output to an asset.