8 results about "Spatial division multiple access" patented technology

The invention provides an uplink MIMO-NOMA (Multiple Input Multiple Output-Non-Orthogonal Multiple Access) system optimization method with a maximized sum rate, which comprises the following steps: firstly, in order to suppress interference between a transmission cluster and a reflection cluster, providing an inter-cluster SIC method: clustering users according to transmission characteristics, adopting space division multiple access in each cluster, and performing inter-cluster SIC of NOMA transmission so as to reduce the interference between the clusters; secondly, a non-convex optimization problem aiming at maximizing the total rate of the system is formulated and solved by using an alternating optimization framework, in the framework, a receiving equalizer is optimized according to a minimum mean square error standard, and transmitting power control of a user is processed through successive convex approximation, so that sub-problems are easy to process; and finally, the beam forming of the active STAR-RIS adopts a sequential rotation design. According to the invention, the dual-fading effect is effectively overcome by adjusting the phase shift and amplitude of electromagnetic waves, an alternating optimization framework is also provided to solve the described non-convex problem, user power is controlled through continuous convex approximation, and active STAR-RIS beam forming is realized through sequential rotation.

The application discloses a kind of optical communication receiving and data recovery methods for space division multiple access multi-to-multi communication, it is related to optical communication receiving technical field.The application discloses a kind of optical communication receiving and data recovery methods for space division multiple access multi-to-multi communication, it is related to optical communication receiving technical field.The application discloses a kind of optical communication receiving and data recovery methods for space division multiple access multi-to-multi communication, it is related to optical communication receiving technical field.The application discloses a kind of optical communication receiving and data recovery methods for space division multiple access multi-to-multi communication, it is related to optical communication receiving technical field.The application discloses a kind of optical communication receiving and data recovery methods for space division multiple access multi-to-multi communication, it is related to optical communication receiving technical field.The application discloses a kind of optical communication receiving and data recovery methods for space division multiple access multi-to-multi communication, it is related to optical communication receiving technical field.The application discloses a kind of optical communication receiving and data recovery methods for space division multiple access multi-to-multi communication, it is related to optical communication receiving technical field.The application discloses a kind of optical communication receiving and data recovery methods for space division multiple access multi-to-multi communication, it is related to optical communication receiving technical field.The application discloses a kind of optical communication receiving and data recovery methods for space division multiple access multi-to-multi communication, it is related to optical communication receiving technical field.The application discloses a kind of optical communication receiving and data recovery methods for space division multiple access multi-to-multi communication, it is related to optical communication receiving technical field.The application discloses a kind of optical

The application discloses a kind of space division multiple access parallel light communication methods, device and equipment based on Micro-LED array, it is related to visible light communication and intelligent transportation technical field.The application discloses a kind of space division multiple access parallel light communication methods, device and equipment based on Micro-LED array, it is related to visible light communication and intelligent transportation technical field.The application discloses a kind of space division multiple access parallel light communication methods, device and equipment based on Micro-LED array, it is related to visible light communication and intelligent transportation technical field.The application discloses a kind of space division multiple access parallel light communication methods, device and equipment based on Micro-LED array, it is related to visible light communication and intelligent transportation technical field.The application discloses a kind of space division multiple access parallel light communication methods, device and equipment based on Micro-LED array, it is related to visible light communication and intelligent transportation technical field.The application discloses a kind of space division multiple access parallel light communication methods, device and equipment based on Micro-LED array, it is related to visible light communication and intelligent transportation technical field.The application discloses a kind of space division multiple access parallel light communication methods, device and equipment based on Micro-LED array, it is related to visible light communication and intelligent transportation technical field.The application discloses a kind of space division multiple access parallel light communication methods, device and equipment based on Micro-LED array, it is related to visible light communication and intelligent transportation technical field.The application discloses a kind of space division multiple access parallel

The invention discloses a rate splitting assisted near field communication hybrid beam robust design method, and belongs to the technical field of wireless communication and novel multiple access. The method comprises the following steps: S1, based on near-field spherical wave propagation characteristics, establishing a near-field channel model considering channel imperfection; s2, the base station sends information to a near-field user by adopting a rate splitting multiple access technology, and a user side sequentially decodes the public information flow and the private information flow by utilizing a receiver with imperfect interference elimination capability; and S3, by taking maximization of the worst user transmission rate as an optimization target, constructing a robust beam forming design problem, providing a block coordinate descent algorithm with a penalty term, and jointly optimizing a hybrid beam forming matrix and a common rate allocation variable. According to the invention, only eight radio frequency links are needed to realize transmission performance close to an all-digital architecture, and compared with a traditional space division multiple access scheme, the transmission rate and robustness of the system can be obviously improved.

A controller may map user equipment (UE) devices in a wireless system to access points (AP) and reflective intelligent surfaces (RIS). The controller may generate a corresponding communications schedule based on the locations of the UE device(s), AP(s), and RIS(s) and based on current traffic demands. The controller may control the RIS(s), AP(s), and UE devices to implement the schedule. The schedule may divide the time, frequency, and / or spatial resources of the RIS(s) to meet the traffic demands of the UE devices using a space division multiple access scheme, a time-division multiple access scheme, a frequency-division multiple access scheme, and / or a distributed multiple-input and multiple output scheme. The schedule may be updated over time as needed. The RIS(s) may allow for a reduction in the number of AP(s) required to meet the dynamic demands of the UE devices, thereby minimizing deployment and operating costs.

The embodiment of the invention provides an information processing method, communication test equipment and a storage medium, and the method comprises the steps: distributing received downlink control information of a plurality of terminal groups to access cell unit instances corresponding to the terminal groups; generating scheduling parameters of each terminal group according to the downlink control information allocated to each access cell unit instance; and respectively sending the scheduling parameter of each terminal group through the access cell unit instance corresponding to each terminal group and the activation cell unit instance corresponding to each terminal group. According to the embodiment of the invention, the received downlink control information of the plurality of terminal groups is distributed to the access cell unit instance corresponding to each terminal group, and each terminal group can form spatial isolation with other terminal groups, so that the corresponding scheduling parameters have spatial isolation characteristics; therefore, the terminal group can have the channel characteristic of spatial isolation, so that the space division multiple access function of the super cell is realized.

The invention discloses an intelligent power transmission and distribution equipment communication control system and method for multiplexing communication, relates to the technical field of multiplexing communication, and solves the technical problem of data communication in the communication control process of intelligent power transmission and distribution equipment. According to the invention, the collected data is transmitted through a physical line through the multiplexing communication module; wherein communication protocols adopted by the multiplexing communication module are a frequency division multiplexing communication protocol, a time division multiplexing communication protocol, a wavelength division multiplexing communication protocol, a code division multiple access communication protocol and a space division multiple access communication protocol; other modules are controlled to be in a normal working state through the control unit; circuit protection is provided through the over-current protection and rectification filtering module; data information in the multiplexing communication process is detected through the fault detection module, fault diagnosis in the multiplexing communication process is achieved by improving an abnormal flow detection model of the convolutional neural network, and the multiplexing communication capability is greatly improved.

The invention discloses a time modulation array space division multiple access optimization method based on limited character input, belongs to the technical field of space division multiple access in a wireless communication system, and constructs a space division multiple access uplink transmission model based on a time modulation array, which comprises a base station end and a user end, the base station end is provided with a uniform linear time modulation array TMA composed of N array elements, and the time modulation array TMA is in a receiving state when working and performs space division multiple access communication with K mobile users equipped with single antennas of the user end; a base station end of the time modulation array receives a signal with K user data and carries out time modulation at a radio frequency front end, and a time modulation module adopts a single-pole single-throw SPST radio frequency switch and is uniformly controlled by an FPGA (Field Programmable Gate Array).