Guo Dian Tong Network Technology Company Limited

State Grid Corporation of China

Beijing University of Posts and Telecommunications

Origin Research Wireless, Inc.

State Grid Corporation of China (sgcc)

State Grid Information & Telecommunication Branch

State Grid Information & Telecommunications Branch Ltd.

Fengyu Wang

Ning Li

Jianming Liu

Aimei Yan

Jiye Wang

Ping Zhang

Beibei Wang

K J Ray Liu

Oscar Chi-Lim Au

Chenshu Wu

Hui Gao

Wenjun Xu

Xiaolu Zeng

Jiaru Lin

Liang Wu

Tingting Zou

Zhisong Bie

Lifang Yang

Disclosed is a low-complexity linear equalization method for an Orthogonal Time Frequency Space (OTFS) system. The method may include: receiving a time domain signal passing through a linear time-varying (LTV) channel; sampling the time domain signal to obtain a sampled signal; demodulating the sampled signal to obtain a demodulated signal; performing a Symplectic Finite Fourier Transform (SFFT) on the demodulated signal to obtain a sampled delay-Doppler domain signal; determining an effective channel matrix in a delay-Doppler domain under a restriction of a rectangular window according to a time domain channel matrix; determining a linear equalization matrix according to the effective channel matrix; and equalizing the sampled delay-Doppler domain signal in a low-complexity way according to the linear equalization matrix. The disclosure also discloses a linear equalization device of an OTFS system for realizing the linear equalization method and a computer-readable storage medium.

Linear equalization method and device for OTFS systems

Methods, apparatus and systems for wireless vital sign monitoring are described. In one example, a described system comprises: a transmitter configured to transmit a wireless signal through a wireless channel of a venue; a receiver configured to receive the wireless signal through the wireless channel that is being impacted by an object motion of an object in the venue; and a processor. At least one of the transmitter or the receiver comprises an array of antennas used to transmit or receive the wireless signal. The object motion comprises at least one non-periodic body motion of the object and at least one periodic vital-sign motion of the object. The processor is configured for: segmenting space around the venue into a plurality of sectors based on a beamforming and the received wireless signal, wherein each sector of the plurality of sectors is associated with a spatial direction relative to the array of antennas, obtaining a plurality of time series of channel information (CI) of the wireless channel based on the beamforming, wherein each time series of CI (TSCI) of the plurality of TSCI is associated with a respective sector of the plurality of sectors, isolating the object motion of the object in the plurality of TSCI to generate a plurality of isolated TSCI, compensating for the at least one non-periodic body motion of the object in the plurality of isolated TSCI to generate a plurality of compensated TSCI, and monitoring the at least one periodic vital-sign motion of the object based on the plurality of compensated TSCI.

Method, apparatus, and system for wireless vital monitoring using high frequency signals

A method for analyzing a user load in conjunction with time information and a system thereof are provided. In the case that an enterprise operates in a non-full-time operational mode, operation periods of the enterprise are adjusted, electricity prices for respective adjusted operation periods are obtained, and the electricity prices are multiplied with electricity consumptions to obtain electricity charges of the enterprise. In the case that the enterprise operates in a full-time operational mode, electricity consumptions in respective hours of the enterprise are adjusted, the electricity consumptions are multiplied with electricity prices for the respective hours to obtain electricity charges of the respective hours of the enterprise, and the electricity charges of the respective hours are accumulated to obtain a total electricity charge of the enterprise.

Method and system for analyzing user loads in combination with time information

A system for intelligent electric power utilization of park and a method thereof are provided. The system includes an acquisition system, a data processing system, an application system and a service system through which the acquisition system, the data processing system and the application system are connected to external system. The application system includes an intelligent interaction application subsystem, an electric power utilization monitoring application subsystem, an energy efficiency analysis application subsystem, an orderly electric power utilization application subsystem, a system security application subsystem and a man-machine interaction interface. Enterprise users are leaded to actively carry out requirement response. Energy conservation and emission reduction and peak shaving and valley filling are effectively realized in intelligent park. Capability of intelligent electric power utilization of the park is improved. Accordingly, load balancing capability of region is improved and safe and stable operation of the power grid is ensured.

Intelligent power utilization system and method for parks

Growing community of inventors

Beijing, China

Fengyu Wang