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57 results about "Edge cell" patented technology

Downlink MU_COMP scheduling algorithm based on improved chordal distance

The invention discloses a downlink MU_COMP (Multi-User_Coordinated Multiple Point) scheduling algorithm based on an improved chordal distance, which comprises the following steps that S1, edge cell users detect the strength of a current interference signal and feed back current signal interference noise ratios, and an activated user set in a coordinated transmission mode is determined according to the signal interference noise ratios; S2, a candidate user set and a selected user set are established, wherein the candidate user set comprises users in the activated user set; one of the users with the maximum F norm in the candidate user set is added to the selected user set, and the channel capacity of the users in the selected user set is computed; S3, a chordal distance between each user channel matrix in the candidate user set and a combined channel matrix in the selected user set is computed; S4, the user with the maximum chordal distance between the user channel matrix and the combined channel matrix in the selected user set is selected; S5, whether the users in the selected user set reach an upper user limit is judged, if so, S2 is skipped to, and if not, S6 is skipped to; and S6, block diagonalization precoding matrixes are designed for the edge cell users in the selected user set respectively, and a coordination base station uses the block diagonalization precoding matrixes to perform combined precoding and sending on the edge cell users.
Owner:XIDIAN UNIV

Preparation method of Xinyang white tea

The invention provides a preparation method of Xinyang white tea. The preparation method comprises the following steps of (1) picking fresh leaves; (2) performing withering for the first time; (3) performing rocking of green leaves for the first time; (4) performing withering for the second time; (5) performing rolling for the first time; (6) performing rocking of green leaves for the second time;(7) performing rolling for the second time; (8) performing baking for the first time; (9) performing choosing and rejecting; and (10) performing baking for the second time. According to the preparation method disclosed by the invention, the withering time is prolonged, so that substances contained in tea leaves generate sufficient physical and chemical changes; through rocking of green leaves twice, edge cells of the fresh leaves are appropriately destructed, the fragrance and the taste of the made tea leaves are improved, and enzymes in the tea leaves catalyze fragrance precursor substancesto be transformed and formed into unique fragrance; through rocking of green leaves for the first time, the activity of enzymes in the tea leaves can be improved, the hydrolysis and the transformationof soluble substances of amino acids, carbohydrate and the like are facilitated, the fresh and brisk degree of the tea leaves is increased, and the taste of the tea leaves is better; and through rocking of green leaves for the second time, transformation of fragrance substances is promoted, and fragrance is further promoted.
Owner:XINYANG AGRI & FORESTRY UNIV

Same-frequency cell correlated coefficient acquisition method based on LTE (Long Term Evolution) network and same-frequency cell correlated coefficient acquisition device based on LTE network

The invention relates to a same-frequency cell correlated coefficient acquisition method based on an LTE (Long Term Evolution) network and a same-frequency cell correlated coefficient acquisition device based on an LTE network. The method comprises the following steps of: acquiring a same-frequency cell MR detection ratio according to MR data; according to frequency scanning data of a road, determining a main service road coverage cell; according to a general sampling point of the main service road coverage cell and a sub-sampling point of a first RSRP (Reference Signal Received Power) difference value in a pre-set range, acquiring a same-frequency cell road detection ratio; determining a maximum value in the same-frequency cell MR detection ratio and the same-frequency cell road detection ratio as a same-frequency cell detection ratio; according to the cutting-out application quantity of a same-frequency adjacent region in the pre-set range of a service cell and a cutting-out application total quantity of all same-frequency adjacent regions of the service cell, acquiring a cutting-out ratio; and according to the same-frequency cell detection ratio and the cutting-out ratio, acquiring a same-frequency cell correlated coefficient. An MR lacked quantity can be made up and the correlation of a road cell is accurately reflected; the relation of edge cells is accurately represented.
Owner:GUANGDONG HAIGE ICREATE TECHNOLOGY CO LTD

Design method for cathode short MOS-controlled thyristor layout

InactiveCN109309086AExtend the time to enter the latchThe time to enter the latch is advancedSolid-state devicesSemiconductor devicesCapacitanceEngineering
The invention belongs to the technical field of power semiconductor devices, and relates to a design method for a cathode short MOS-controlled thyristor (CS-MCT) layout. The method main includes forming a cellular grid structure into a bar-shaped grid structure in a horizontal direction; and defining a circle of cells connected to a junction terminal as edge cells, and defining other cells as internal cells, wherein the semiconductor doping regions of the edge cells are connected to a cathode through a bar-shaped contact hole, and the internal cells are connected to the cathode through a square-shaped contact hole. The latching current of the edge cells can be increased through improved measurements, and the time of the edge cells entering a latch can be prolonged; gate capacitance can bereduced, and the time of internal cells entering the latch can be advanced; in the middle part of the horizontal direction, bar-shaped grids also have metal interdigital in a vertical direction, so that the gate resistance parasitized on polysilicon can be reduced, and the time of the internal cells entering the latch can be advanced as well; and in a word, current can be uniformly distributed bymaking the edge cells and the internal cells simultaneously trigger the latch.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA
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