6 results about "Superposition coding" patented technology

The embodiment of the invention discloses a communication method, a communication device and a storage medium, which are applied to the technical field of communication and are used for realizing superposition coding between transmission blocks. The method comprises the steps that first data is determined, the first data comprises a first code block, the first code block is obtained by overlapping a plurality of code blocks, and at least two of the code blocks belong to different first transmission blocks; the first data packet is sent, the first data packet comprises multiple pieces of data, and the multiple pieces of data comprise the first data. The first code block in the first data is obtained by superposing the data in the plurality of first transmission blocks, so that when the data transmission in the data packet has an error, the receiving end equipment can correct the error data according to the first data in the data packet, so that the data in the data packet can be successfully decoded, and the decoding efficiency of the data packet is improved. The performance gain of mutual error correction between transmission blocks is improved.

The application discloses a method for interference utilization of a reconfigurable intelligent surface assisted cognitive non-orthogonal multiple access network, and comprises the following steps: constructing a reconfigurable intelligent surface assisted downlink cognitive radio non-orthogonal multiple access system; a superposition coding is adopted by a base station to send signals to all users, and a joint optimization of an active beamforming vector of the base station and a passive reflection phase shift matrix of the reconfigurable intelligent surface is performed to construct a constructive superposition signal for direct detection of a secondary user; the secondary user directly demodulates own data through a single user detector without performing serial interference cancellation (SIC) based on the constructive superposition signal; by utilizing the intelligent reconstruction of a wireless propagation environment by the reconfigurable intelligent surface, the application adopts a constructive interference technology to convert strong interference of a primary user into a constructive signal of a secondary user; the mechanism realizes direct detection through the constructive interference design, greatly simplifies the receiving and processing of the secondary user and reduces the time delay.

Disclosed in the embodiments of the present application are a communication method, a communication apparatus and a storage medium, which are applied to the technical field of communications, and used for implementing superposition encoding between transport blocks. The method in the embodiments of the present application comprises: determining first data, wherein the first data comprises a first code block, the first code block is obtained by means of superimposing a plurality of code blocks, and at least two of the plurality of code blocks belong to different first transport blocks; and sending a first data packet, wherein the first data packet comprises a plurality of pieces of data, and the plurality of pieces of data comprise the first data. A first code block in first data is obtained by means of superimposing data in a plurality of first transport blocks, such that when an error occurs during the transmission of data in a data packet, a receiver-side device can perform error correction on erroneous data on the basis of the first data in the data packet. Therefore, the data in the data packet can be successfully decoded, thereby improving the performance gain of mutual error correction between the transport blocks.

This invention relates to the field of automation control technology and discloses a method for coordinated flow and pressure control under deep well high-pressure fluid operation conditions. The method includes: acquiring parameters from the power actuator and pressure feedback from the controlled system to establish a state feature vector; generating a control sequence containing flow control and pressure compensation components using a virtual cross-impedance decoupling model; superimposing an coded signal as a logic probe into the command and extracting the dynamic phase angle difference using the feedback residual; calibrating the transmission channel time constant based on the phase angle difference and performing time-domain shifting and alignment on the pressure compensation component; adjusting the power actuator while simultaneously controlling the output of the regulating actuator to provide a counter-current signal. This invention transforms variable coupling into non-interfering logic channels through virtual impedance decoupling, eliminating oscillations induced by loop interference; and using an endogenous excitation calibration mechanism to sense transmission characteristics, solving the compensation phase deviation caused by material property drift, and ensuring stable pressure convergence.

Provided are a data transmission method and a communication device, the method relating to the technical field of communications, the method comprising: a terminal device sending first data, the first data being encoded by using a first encoding mode; and the terminal equipment sends second data, wherein the second data is determined by carrying out LDGM superposition coding according to a plurality of to-be-retransmitted first data blocks in the first data. Through the method and the device, the overhead of data block retransmission resources can be reduced under the condition of limited resources and limited data packet delay budget.

Provided in the present application are a data transmission method and a communication apparatus. The method relates to the technical field of communications, and comprises: a terminal device sending first data, wherein the first data is encoded in a first encoding mode; and the terminal device sending second data, wherein the second data is determined by means of performing LDGM superposition coding on a plurality of first data blocks to be retransmitted in the first data. The present application facilitates a reduction in the overheads of data block retransmission resources under the conditions of limited resources and a limited packet delay budget.