Abstract: Provided are a data transmitting or receiving method and device for dual Transport Blocks (TBs), a transmitter and a receiver. Data to be transmitted is divided into two portions, where transport blocks TB1 and TB2 are generated respectively according to a corresponding predetermined Modulation Coding Scheme (MCS) for each portion. The TB1 is modulated into an amplitude weighted complex symbol sequence S1, and the TB2 is modulated into an amplitude weighted complex symbol sequence S2. The S1 and the S2 are superposed to generate a complex symbol sequence S3 corresponding to a new TB, where the complex symbol sequence S3 corresponding to the new TB possesses Gray properties. The new TB is transmitted to a receiver.

Abstract: Provided are an information transmission method and device, and a computer storage medium. The method includes sending signal indication information to a receiver and transmitting a signal according to the signal indication information; the signal indication information includes at least one of the following: a transmission mode, interference layer information, power ratio indication information, pre-coding or port information and physical resource block (PRB) indication information.

Abstract: Disclosed are a modulation method, demodulation method, and apparatus for multi-user information transmission. The modulation method comprises: a transmitter determines a first modulation symbol and a second modulation symbol according to a first information bit, a second information bit, and a mapping table, the mapping table being used for determining a corresponding relation between the first information bit and the first modulation symbol and a corresponding relation between the second information bit and the second modulation symbol, each group of modulation symbols in the mapping table being superposed and mapped to a constellation diagram to achieve a Gray attribute; and the transmitter superposes the first modulation symbol and the second modulation symbol to obtain a superposed symbol.

Abstract: The present invention relates to a method and apparatus for processing a modulation symbol. The processing method comprises: a transmitter obtaining a transmission power ratio ?j, wherein in the transmission power ratio ?j?{?0, ?1, ?2}, j is a natural number, and ?0, ?1 and ?2 are all positive numbers; and the transmitter modulating a first group of bit sequences b0(i), b0(i+1) and a second group of bit sequences b1(i), b1(i+1), . . . , b1(i+n) according to the transmission power ratio ?j so as to obtain a modulation symbol, wherein i is a natural number, and n?{1, 3, 5}. The present invention solves the problem in the relevant art that an uncertain number of transmission power ratios affects the performance of a system and increases the design complexity of signaling, thereby reducing signaling overheads and improving system stability and demodulation performance.

Abstract: A multi-user code division multiple access communication method, and corresponding transmitter and receiver include: the transmitter determines a complex-valued spreading sequence to be used by the transmitter, herein each element of the complex-valued spreading sequence is a complex number and values of real and imaginary parts of all elements in the complex-valued spreading sequence are from an M-element set of real numbers, and M is an integer larger than or equal to 2; the transmitter performs spreading processing on data symbols to be sent by using the complex-valued spreading sequence to generate a spread symbol sequence; and sends the spread symbol sequence. The receiver receives signals transmitted by multiple transmitters, and performs reception detection by using an interference cancellation signal detector, herein the complex-valued spreading sequences used by the multiple transmitters are used during detection.

Abstract: An encoding method, decoding method, encoding device and decoding device for structured LDPC codes. The method includes: determining a basic matrix used for encoding, which includes K0 up-and-down adjacent pairs; and according to the basic matrix and an expansion factor corresponding to the basic matrix, performing an LDPC encoding operation of obtaining a codeword of Nb×z bits according to source data of (Nb?Mb)×z bits, herein z is the expansion factor, and z is a positive integer which is greater than or equal to 1. The provided technical solution is applicable to the encoding and decoding of the structured LDPC, thereby realizing the encoding and decoding of LDPC at the high pipeline speed.

Abstract: A data transmission method includes the following steps: determining a transmission resource to be used and a complex-valued spreading sequence to be used; processing a data symbol to be sent by using the complex-valued spreading sequence to generate a symbol sequence; and sending the symbol sequence through the transmission resource.

Abstract: The embodiments of disclosure disclose a method and device for multiuser superposition transmission and a method and device for demodulating multiuser information transmission. In the method, two bit information streams are respectively modulated into a first complex symbol sequence and a second complex symbol sequence; superposition processing on the first complex symbol sequence and the second complex symbol sequence is performed to generate a third complex symbol sequence, wherein the third complex symbol sequence has a Gray mapping attribute; and a sending signal is formed according to the third complex symbol sequence, and the sending signal is sent to multiple receivers.

Abstract: Disclosed are a modulation method, demodulation method, and apparatus for multi-user information transmission. The modulation method comprises: a transmitter determines a first modulation symbol and a second modulation symbol according to a first information bit, a second information bit, and a mapping table, the mapping table being used for determining a corresponding relation between the first information bit and the first modulation symbol and a corresponding relation between the second information bit and the second modulation symbol, each group of modulation symbols in the mapping table being superposed and mapped to a constellation diagram to achieve a Gray attribute; and the transmitter superposes the first modulation symbol and the second modulation symbol to obtain a superposed symbol.

Abstract: This document discloses a data transmission method and apparatus. The method includes: obtaining N data symbols to be sent; determining N complex sequences to be used; processing the N data symbols using the N complex sequences respectively to generate N data symbol sequences; superimposing the N data symbol sequences to generate a superimposed data symbol sequence; and sending the superimposed data symbol sequence; where N is an integer number greater than or equal to 2.

Abstract: A data transmission method includes the following steps: determining a transmission resource to be used and a complex-valued spreading sequence to be used; processing a data symbol to be sent by using the complex-valued spreading sequence to generate a symbol sequence; and sending the symbol sequence through the transmission resource.

Abstract: A multi-user code division multiple access communication method, and corresponding transmitter and receiver include: the transmitter determines a complex-valued spreading sequence to be used by the transmitter, herein each element of the complex-valued spreading sequence is a complex number and values of real and imaginary parts of all elements in the complex-valued spreading sequence are from an M-element set of real numbers, and M is an integer larger than or equal to 2; the transmitter performs spreading processing on data symbols to be sent by using the complex-valued spreading sequence to generate a spread symbol sequence; and sends the spread symbol sequence. The receiver receives signals transmitted by multiple transmitters, and performs reception detection by using an interference cancellation signal detector, herein the complex-valued spreading sequences used by the multiple transmitters are used during detection.

Abstract: Provided are multiuser communication methods and devices for Code Division Multiple Access (CDMA). N modulated symbols which are obtained by modulating a code block coded by a channel coder are acquired, where N is a positive integer more than or equal to 2. The N modulated symbols are spread according to N spread sequences with a specified length, and there may be at least two different spread sequences in the N spread sequences with the specified length. The spread modulated symbols are transmitted.

Abstract: Provided are a data transmitting or receiving method and device for dual Transport Blocks (TBs), a transmitter and a receiver. Data to be transmitted is divided into two portions, where transport blocks TB1 and TB2 are generated respectively according to a corresponding predetermined Modulation Coding Scheme (MCS) for each portion. The TB1 is modulated into an amplitude weighted complex symbol sequence S1, and the TB2 is modulated into an amplitude weighted complex symbol sequence S2. The S1 and the S2 are superposed to generate a complex symbol sequence S3 corresponding to a new TB, where the complex symbol sequence S3 corresponding to the new TB possesses Gray properties. The new TB is transmitted to a receiver.

Abstract: A packet processing method and device are disclosed. The method includes: performing code block segmentation on a source packet to obtain a sub-packets; performing error correction encoding on each sub-packet respectively, or performing error correction encoding after respectively adding a CRC sequence to each sub-packet to obtain a error correction encoding sub-packets; performing network encoding on the a error correction encoding sub-packet to obtain b check sub-packets; and performing bit selection operation on the a error correction encoding sub-packets and the b check sub-packets respectively to collectively form an encoded packet; herein a and b are integers greater than 0.

Abstract: The embodiments of disclosure disclose a method and device for multiuser superposition transmission and a method and device for demodulating multiuser information transmission. In the method, two bit information streams are respectively modulated into a first complex symbol sequence and a second complex symbol sequence; superposition processing on the first complex symbol sequence and the second complex symbol sequence is performed to generate a third complex symbol sequence, wherein the third complex symbol sequence has a Gray mapping attribute; and a sending signal is formed according to the third complex symbol sequence, and the sending signal is sent to multiple receivers.

Abstract: An encoding method, decoding method, encoding device and decoding device for structured LDPC codes. The method includes: determining a basic matrix used for encoding, which includes K0 up-and-down adjacent pairs; and according to the basic matrix and an expansion factor corresponding to the basic matrix, performing an LDPC encoding operation of obtaining a codeword of Nb×z bits according to source data of (Nb?Mb)×z bits, herein z is the expansion factor, and z is a positive integer which is greater than or equal to 1. The provided technical solution is applicable to the encoding and decoding of the structured LDPC, thereby realizing the encoding and decoding of LDPC at the high pipeline speed.

Abstract: The disclosure discloses a method for supporting low bit rate coding. A source data packet to be coded is repeated for i times, and the data packet which is repeated for i times is coded. The disclosure also discloses an apparatus for supporting low bit rate coding and a computer storage medium.

Abstract: Disclosed are a wireless multipath transmission method and system, a data transmitting device and a data receiving device, the method includes: a data transmitting end encoding a plurality of original data packets, herein the number of encoded data packets is greater than the number of original data packets; the data transmitting end transmitting the encoded data packets to a data receiving end over different transmission links; the data receiving end receiving the data packets from the different transmission links, decoding to obtain the original data packets. The abovementioned technical solution encodes and distributes the original data packets, and flexibly realizes the multipath data transmission, moreover, the technical solution further considers configuration information of the encoding when distributing the encoded data packets, thus effectively utilizing resources provided by each link to serve the user with data transmission, improving the throughput, and reducing the transmission delay.

Abstract: Provided are a method and apparatus for processing information. The apparatus includes: one or more memories, configured to store parameters of one basic parity check matrix set; and one or more processors, configured to encode information bits to be encoded or decode data to be decoded using the basic parity check matrix set Hb, wherein at least 50 percent of short loops-4 in a basic parity check matrix Hbj1 among all basic parity check matrices in the basic parity check matrix set Hb except Hbj0 are the same as short loops-4 in the Hbj0, where j0 is a fixed positive integer between 0 and L?1, L is the number of basic parity check matrices contained in the basic parity check matrix set, and j1=0, 1, . . . , j0?1, j0+1, . . . , L?1.