Abstract: A display panel includes a substrate and a grating disposed on a light-emitting side of the display panel. The grating includes a plurality of protruding portions and a plurality of interval portions, each interval portion is located between two adjacent protruding portions. The plurality of protruding portions are arranged on the substrate along a first direction, and each protruding portion extends along a second direction perpendicular to the first direction. Each protruding portion includes an outer surface and a bottom surface; the outer surface is a smooth curved surface, and the bottom surface is a flat surface. A cross-sectional figure of each protruding portion along a thickness direction of the display panel is a first figure; the first figure includes a curve and a bottom edge, and the first figure is a closed figure formed by the curve and the bottom edge.

Abstract: A pyrolysis apparatus for completely separating an EVA crystal silicon wafer from a waste photovoltaic module includes a heating mechanism controlled by a control system and mounted in a pyrolysis box and being capable of performing telescopic motion in a vertical direction; an overturning assembly for fixedly clamping and driving a photovoltaic module to overturn, the overturning assembly is arranged just under the heating mechanism; and a splitting assembly for separating the photovoltaic module, the splitting assembly is arranged at a left side of the photovoltaic module fixedly clamped by the overturning assembly. A splitting apparatus is provided for assisting in splitting EVA, and isolating glass from the crystal silicon wafer, as well as isolating a back plate from the crystal silicon wafer, and therefore, the pressure generated on the crystal silicon wafer due to large strength of the glass and shrinkage of the back plate is prevented.

Abstract: A method of time domain synchronous orthogonal frequency division multiplexing (TDS-OFDM) communication, including the steps of: preparing OFDM-body; generating pseudo random (PN) sequence as a training signal; manipulating the PN sequence to concentrate the energy distribution thereof to the same bandwidth of sub-carriers of the OFDM-body; offsetting the manipulated PN sequence to align with frequency spectrum of the sub-carriers; and inserting the offset PN sequence as prefix of a TDS-OFDM data frame. The manipulating step may include the step of repeating the PN sequence by N times, wherein the spectrum of the repeated PN sequence concentrates on discrete bundles of sub-carriers, i.e., on one sub-carrier every N sub-carriers or M adjacent sub-carriers every MN sub-carriers, where M is an integer determined by the time duration ratio of the OFDM body and prefix.

Abstract: Method and apparatus for channel simulation is disclosed. The claimed invention provides method and apparatus 1200 to simulate a propagation channel, particularly a multiple-input-multiple-input (MIMO) channel. The claimed invention further provides a method and apparatus for efficient optimization of antenna by the enhanced channel simulation. The claimed invention takes both antenna characteristics and channel characteristics as inputs, and output time-varying channel realizations to generate the system metrics as the optimization target for antenna under optimization. The claimed invention advantageous provides enhanced channel simulation to meet the accuracy requirement of antenna evaluation.

Abstract: Method and apparatus for channel simulation is disclosed. The claimed invention provides method and apparatus 1200 to simulate a propagation channel, particularly a multiple-input-multiple-input (MIMO) channel. The claimed invention further provides a method and apparatus for efficient optimization of antenna by the enhanced channel simulation. The claimed invention takes both antenna characteristics and channel characteristics as inputs, and output time-varying channel realizations to generate the system metrics as the optimization target for antenna under optimization. The claimed invention advantageous provides enhanced channel simulation to meet the accuracy requirement of antenna evaluation.

Abstract: A method of time domain synchronous orthogonal frequency division multiplexing (TDS-OFDM) communication, including the steps of: preparing OFDM-body 402; generating pseudo random (PN) sequence 403 as a training signal; manipulating the PN sequence 403 to concentrate the energy distribution thereof to the same bandwidth of sub-carriers of the OFDM-body; offsetting the manipulated PN sequence to align with frequency spectrum of the sub-carriers 406; and inserting the offset PN sequence as prefix 401 of a TDS-OFDM data frame 400. The manipulating step may include the step of repeating the PN sequence by N times, wherein the spectrum of the repeated PN sequence concentrates on discrete bundles of sub-carriers, i.e., on one sub-carrier every N sub-carriers or M adjacent sub-carriers every MN sub-carriers, where M is an integer determined by the time duration ratio of the OFDM body and prefix..