Abstract: A Kernel-power-density based method for wireless channel multipath components (MPCs) clustering. Signals get to the receiver from a transmitter via multipath propagation. MIMO channels can be modeled as double-directional, which contains the information of power, delay, direction of departure (DOD) and direction of arrival (DOA) of MPCs. The MPCs tend to appear in clusters. All the parameters of MPCs can be estimated by using high-resolution algorithms, such as MUSIC, CLEAN, SAGE, and RiMAX. Considering a data snapshot for a certain time with several clusters, which include a number of MPCs, where each MPC is represented by its power, delay, DOD and DOA. This invention adopts a novel clustering framework by using a density based method, which can better identify the local density variations of MPCs and requires no prior knowledge about clusters. It can work for the cluster oriented channel processing technology in future wireless communication field.

Abstract: A storage container for a refrigerator includes a first storage box and a second storage box. The first storage box includes a first bottom wall and a first peripheral wall surrounding the first bottom wall. The first bottom wall and the first peripheral wall cooperatively define a first storage space. The second storage box includes a second bottom wall and a second peripheral wall surrounding the second bottom wall. The second bottom wall and the second peripheral wall cooperatively define a second storage space. The second bottom wall is formed by an extended portion of the first peripheral wall.

Abstract: A Kernel-power-density based method for wireless channel multipath components (MPCs) clustering. Signals get to the receiver from a transmitter via multipath propagation. MIMO channels can be modeled as double-directional, which contains the information of power, delay, direction of departure (DOD) and direction of arrival (DOA) of MPCs. The MPCs tend to appear in clusters. All the parameters of MPCs can be estimated by using high-resolution algorithms, such as MUSIC, CLEAN, SAGE, and RiMAX. Considering a data snapshot for a certain time with several clusters, which include a number of MPCs, where each MPC is represented by its power, delay, DOD and DOA. This invention adopts a novel clustering framework by using a density based method, which can better identify the local density variations of MPCs and requires no prior knowledge about clusters. It can work for the cluster oriented channel processing technology in future wireless communication field.

Abstract: A product positioning device includes a support, a first guide rail, a second guide rail, a support platform, a latching device, and a driving device. The first guide rail and the second guide rail are positioned on the support. The support platform is configured to receive a product to be positioned. The support platform is movable to an end of the first guide rail. The latching device is movable to a position holding the product to be positioned against the support platform. The driving device is movable to a position nearer the support platform. The driving device is further slidably engaged with the second guide rail. The driving device moves to the driving device position as the support platform moves to the end of the first guide rail, and the latching device moves to the latching device position as the driving device moves to the driving device position.

Abstract: A product positioning device includes a support, a first guide rail, a second guide rail, a support platform, a latching device, and a driving device. The first guide rail and the second guide rail are positioned on the support. The support platform is configured to receive a product to be positioned. The support platform is movable to an end of the first guide rail. The latching device is movable to a position holding the product to be positioned against the support platform. The driving device is movable to a position nearer the support platform. The driving device is further slidably engaged with the second guide rail. The driving device moves to the driving device position as the support platform moves to the end of the first guide rail, and the latching device moves to the latching device position as the driving device moves to the driving device position.