摘要:
A diamond-coated body including: a substrate formed of a cemented carbide; a diamond coating; and an interface layer interposed between the substrate and the diamond coating, wherein the interface layer consists of a solid solution including an aluminum nitride and a metal which belongs to one of groups IVa, Va and VIa of the periodic table. The interface layer is preferably provided by one of TiAlN, CrAlN and VAlN. The substrate is preferably formed of a super-fine particle cemented carbide.
摘要:
A method of removing a diamond coating from a substrate of a diamond-coated body which includes the substrate coated with the diamond coating. The method includes a step of heating the diamond-coated body at a predetermined temperature in a reactor at a predetermined reduced pressure, while introducing an oxygen gas into the reactor at a predetermined flow rate, for burning the diamond coating to thereby remove the diamond coating from the substrate.
摘要:
An interference measurement method includes receiving, by a receiving side, a signal. The signal includes a second pilot sent by an interference sending side, and the interference sending side is an interference source when the receiving side performs receiving measurement on a first pilot of a sending side; and performing, by the receiving side, interference measurement on the interference sending side. The interference measurement includes measurement of the second pilot, and both the receiving side and the sending side use an OTFS system.
摘要:
An electrical connector comprises an insulative housing, a printed circuit board retained in the insulative housing, and a limiting member. The insulative housing has a mating portion and a main portion extending backwards from the mating portion. The printed circuit board has a tongue portion exposed in front of the mating portion and a plurality of golden fingers disposed on the tongue portion for mating with a complementary connector. The limiting member defines a pair of first limiting plates parallel and opposite to each other. The first limiting plates are located in front of the mating portion entirely and on both sides of the tongue portion in a transverse direction, a first guiding slot is formed between each first limiting plate and corresponding lateral surface of the tongue portion in the transverse direction for leading the complementary connector to be plugged.
摘要:
A service virtual machine provides service to any number of virtual machines on a hypervisor over a first communication channel. When an anomaly is detected within the provided service, any virtual machine using the first communication channel switches to a second communication channel and receives service from a second virtual machine. The second virtual machine may execute upon the same computer or on a different computer. Hooking points within the hypervisor provide a means for the service virtual machines to monitor traffic and provide service to the protected virtual machines. When a service virtual machine is suspended, it is repopulated, upgraded or rebooted, and then restored to service. Once restored, any protected virtual machine may be switched back to the restored service virtual machine. Virtual machines may be switched to a different communication channel by modifying a configuration file. Both communication channels may be in use at the same time.
摘要:
The present invention provides a precoding method for a cross-polarized antenna array, the cross-polarized antenna array comprising a first group of coplanar polarized antennas and a second group of coplanar polarized antennas, the method comprising the following steps: generating, for at least one layer of data stream, a feedback codebook comprising a plurality of codewords; receiving a selection of the codeword in the feedback codebook; determining a corresponding codeword from the feedback codebook according to the received selection; generating a precoding matrix based on the determined codeword to precode the at least one layer of data stream; wherein each codeword in the feedback codebook comprises a first coefficient portion corresponding to a first group of coplanar polarized antennas and a second coefficient portion corresponding to the second group of coplanar polarized antennas, and there is a complex scaling relation between the coefficients in the first coefficient portion and the second coefficient portion corresponding to the same layer of data stream. Correspondingly, the present invention further provides a precoder for a cross-polarized antenna array.
摘要:
The present invention provides a method of providing feedback information in a user equipment of a communication system based on MIMO, comprising: determining a first latest measured long-term covariance matrix according to a downlink channel matrix model; transmitting the quantization of a first latest estimated long-term covariance matrix corresponding to the first latest measured long-term covariance matrix to the base station; determining a second latest measured long-term covariance matrix according to a downlink channel matrix model; determining the variation information of a second latest estimated long-term covariance matrix with respect to an estimated long-term covariance matrix of the last-time reset point; and transmitting the quantization of the variation information to the base station. With such a solution, overhead during the feedback of long-term covariance matrix is greatly reduced in MIMO scenario.
摘要:
The present invention proposes a method for multi-site multi-user joint transmission, the method comprising: measuring, by a user terminal, a downlink channel originated from each base station; according to the measurement for the downlink channel, quantizing and obtaining, by the user terminal, per-site channel information for the each base station and additional inter-site channel information, the additional inter-site channel information being used for calculating joint channel information of multiple base stations; and feeding back, by the user terminal, the per-site channel information for the each base station and the additional inter-site channel information so that the base station performs scheduling to execute the multi-site multi-user joint transmission.