Abstract: The present disclosure discloses a tobacco leaf foliar spraying substance for reducing harmful ingredients in cheroot, a method for reducing carcinogenic components in flue-cured tobacco leaves and flue-cured tobacco shreds. The tobacco leaf foliar spraying substance contains a lotus leaf extract, the harmful chemical ingredients comprise N-nitrosonornicotine, 4-(N-methyl-nitrosamine)-1-(3-pyridinyl)-1-butanone, N-nitrosoanabasine and N-nitrosoanatabine. Foliar spraying is performed on a fertile field by using the lotus leaf extract before tobacco leaves are harvested and modulated, which not only significantly promotesagronomic characters and economic traits of tobacco and alleviates tobacco leaf browning but also effectively reduces harmful chemical ingredients unique to tobacco leaves, such as nitrosamine and nicotine.

Abstract: An HARQ retransmission method and apparatus and a transmission device are provided. The method includes: determining a transmission parameter; and selecting dynamically a transmission starting position of each retransmission redundancy version from a circular buffer according to the transmission parameter.

Abstract: An encoding method and apparatus, and a computer storage medium, wherein same are used to improve the LDPC encoding performance, and are thus suitable for 5G systems. The encoding method comprises: determining a base graph of a low density parity check code (LDPC) matrix, and constructing a cyclic coefficient index matrix; determining a sub-cyclic matrix according to the cyclic coefficient index matrix; and carrying out LDPC encoding according to the sub-cyclic matrix and the base graph.

Abstract: An HARQ retransmission method and apparatus and a transmission device are provided. The method includes: determining a transmission parameter; and selecting dynamically a transmission starting position of each retransmission redundancy version from a circular buffer according to the transmission parameter.

Abstract: A low density parity check code transmission method and device, for use in improving the anti-burst-error capability of a low density parity check code. The method provided by the present application comprises: an interleaver changes the sequence of bit streams of a low density parity check code according to a preset rule, and outputs to a modulator the low density parity check code the sequence of bit streams of which is changed; the modulator modulates the low density parity check code the sequence of bit streams of which is changed and then sends the modulated low density parity check code to a receive end by using a channel.

Abstract: An encoding method and apparatus, and a computer storage medium, wherein same are used to improve the LDPC encoding performance, and are thus suitable for 5G systems. The encoding method comprises: determining a base graph of a low density parity check code (LDPC) matrix, and constructing a cyclic coefficient index matrix; determining a sub-cyclic matrix according to the cyclic coefficient index matrix; and carrying out LDPC encoding according to the sub-cyclic matrix and the base graph.

Abstract: A low density parity check code transmission method and device, for use in improving the anti-burst-error capability of a low density parity check code. The method provided by the present application comprises: an interleaver changes the sequence of bit streams of a low density parity check code according to a preset rule, and outputs to a modulator the low density parity check code the sequence of bit streams of which is changed; the modulator modulates the low density parity check code the sequence of bit streams of which is changed and then sends the modulated low density parity check code to a receive end by using a channel.

Abstract: A sensor (1) for acquiring sensing data in a disconnected state, an intelligent device (2), and a method. The sensor (1) comprises: a sensing module (11), used for detecting sensing data; a sensing data encapsulation module (12), used for encapsulating the sensing data into a valid payload data segment of a connectable non-directional Bluetooth broadcast data packet or a non-connectable non-directional Bluetooth broadcast data packet that conforms to the Bluetooth 4.0 protocol; and a Bluetooth sending module (13), used for broadcasting the connectable non-directional Bluetooth broadcast data packet or the non-connectable non-directional Bluetooth broadcast data packet. The scheme effectively solves the technical problems of low transmission efficiency and poor user experience due to one-by-one connection and data transmission in the prior art.

Abstract: A method of mapping a plurality of different bit sequences to a plurality of different signal points in a constellation, the number of bit sequences being greater than the number of signal points. The method includes, for a device in a telecommunication network, the acts of: determining, for each signal point in the constellation, a number of bit sequences to be mapped to each signal point, the numbers of bit sequences being distributed according to a discrete Gaussian distribution among the constellation, selecting in the plurality of bit sequences, for each signal point in the constellation, a set including the determined number of bit sequences (u) that minimize the maximal Hamming distance among the selected sets.

Abstract: A method of mapping a plurality of different bit sequences to a plurality of different signal points in a constellation, the number of bit sequences being greater than the number of signal points. The method includes, for a device in a telecommunication network, the acts of: determining, for each signal point in the constellation, a number of bit sequences to be mapped to each signal point, the numbers of bit sequences being distributed according to a discrete Gaussian distribution among the constellation, selecting in the plurality of bit sequences, for each signal point in the constellation, a set including the determined number of bit sequences (u) that minimize the maximal Hamming distance among the selected sets.