58results about How to "Guaranteed Spectral Efficiency" patented technology

The invention discloses a resource mapping method and a resource mapping device of control channels in a communication system. The method includes that a resource mapping process of sub-frames of broadcast control channels is different from a resource mapping process of sub-frames of non-broadcast control channels; and the resource mapping process of the sub-frames of the non-broadcast control channels is indicated through control information of the broadcast control channels. According to the technical scheme, problems of where and how synchronizing channels and the broadcasting control channels occupying resources are solved; processes of identifying the broadcast control channels by terminals are simplified; and spectrum effectiveness of a wireless communication system based on the OFDMA (orthogonal frequency division multiple access) technology is guaranteed.

The present invention provides a novel hybrid beamforming structure and setting method of a millimeter wave MU-MISO system. The method of the present invention includes: a digital beamformer for processing the amplitude and phase of the signal in the baseband, a plurality of radio frequency chains for frequency conversion of the signal, and an analog beamformer for phase modulation of the radio frequency signal. The transmitted signal is firstly digitally beamformed at the baseband by the digital beamformer, and then frequency up-converted by the radio frequency chain to obtain an analog signal; finally, the analog beamforming is completed. The present invention uses a low-energy low-resolution phase shifter and a simple switch network to realize a dynamic sub-array structure, while effectively reducing energy consumption, and utilizes millimeter-wave large-scale antennas and flexible diversity of multiple users to compensate for low-resolution The performance loss caused by the phase shifter and the fixed sub-array achieves a win-win situation of system energy efficiency and spectrum efficiency.

The invention discloses a heterogeneous network resource allocation method based on reinforcement learning. Firstly, a DNN framework is deployed in each base station. The framework is based on the ADMM algorithm, and the channel information is regarded as the weight of the network; according to the data obtained by the base station, that is The current user association information and average interference power give the best resource allocation strategy in the current state; each base station is regarded as an independent subject, and the state of the base station is used as a modeling environment; several agents observe the same heterogeneous network environment and Take actions, and at the same time, the agents communicate with each other through the rewards of the environment; the agents adjust the policy according to the rewards; the resource allocation method provided by the present invention is based on the deep learning network, and the resource allocation plan can be given without all CSI information, while considering the spectrum efficiency , setting the spectral efficiency function as the reward of the agent can guarantee the spectral efficiency while ensuring the system throughput.

The invention discloses a nonlinear effect suspension method and system for a CO-OFDM (Coherent Optical Orthogonal Frequency Division Multiplexing) system. The nonlinear effect suspension method comprises the steps of: at a system sending end, for a random group, acquiring a conjugate symbol in phase conjugation with a pilot symbol so as to obtain a corresponding neighbor estimation group; carrying out carrier mapping on the pilot symbol, the conjugate symbol and a data symbol and sending a carrier to a system receiving end; at the system receiving end, carrying out frequency domain signal reduction on the carrier sent from the system sending end, and extracting the pilot symbol, the conjugate symbol and the data symbol; carrying out coherent superposition on the extracted pilot symbol andthe corresponding conjugate symbol so as to compensate a nonlinear phase shift in the pilot symbol; and estimating a nonlinear phase shift of the data symbol in the same neighbor estimation group byutilizing the extracted pilot symbol and the corresponding conjugate symbol, and carrying out compensation on the nonlinear phase shift of the data symbol. According to the invention, damage caused bya nonlinear effect in the CO-OFDM system can be effectively and comprehensively compensated in real time.

The invention discloses a method for distributing radio resources, which comprises the steps: a dispatching party selects an expanding mode for expanding basic resource blocks or a splitting mode for splitting the basic resource blocks according to predetermined factors; the dispatching party splits the basic resource blocks to obtain splitting resource blocks or expands the basic resource blocks to obtain expanding resource blocks according to the selected splitting mode or the selected expanding mode; the dispatching party dispatches the expanding resource blocks or the splitting resource blocks to a dispatched party and indicates the selected splitting mode or the selected expanding mode to the dispatched party in a predetermined mode; and the dispatching party uses the basic resource blocks, the expanding resource blocks and the splitting resource blocks or the combination of the blocks to carry out resource distributing description and transmits resource distributing description information to the dispatched party. The invention can increase the dispatching efficiency of the radio resources and ensure different service types of QoS and the spectrum efficiency of a prospective wireless communication system.

Disclosed is a method for choosing a decode-and-forward (DF) type relay node (RN) for user equipment (UE), comprising: grouping UE which is ready for performing network coding (NC) according to the communication quality of the UE; selecting a UE group one by one, selecting UE from the selected UE group, and choosing a corresponding DF type RN for the UE according to a rule for choosing a DF type RN; and again according to a rule for selecting UE, selecting corresponding UE for the chosen DF type RN respectively from each of other UE groups except the selected UE group. Disclosed at the same time is a device for choosing a DF type RN for UE. The present invention can be adopted to ensure the service throughput of a cell, and further ensure the frequency spectrum efficiency of edge UE of the cell.