42results about How to "Improve estimate quality" patented technology

The invention aims at providing a method used for transmitting data in equipment-to-equipment communication and equipment thereof. Receiving equipment receives transmission data sent by corresponding sending equipment. The transmission data comprises data identification information identifying whether the transmission data is new transmission data. According to the data identification information, the new transmission data and retransmission data are determined. Redundancy version information of the retransmission data is determined. According to the redundancy version information, combined decoding is performed on the new transmission data and the retransmission data so as to acquire the decoded new transmission data. Compared to the prior art, by using the method and the equipment of the invention, through adding the data identification information identifying whether the transmission data is the new data in the transmission data, a receiving equipment terminal is easy to determine whether the received data is the new data; and according to a scheduling control signaling comprising timing correlation information, the redundancy version information of the retransmission data is determined. Through an indirect method, the redundancy version information is acquired so that signaling cost is reduced and a frequency spectrum utilization rate is increased.

The present invention relates to a transmission method comprising: receiving transmission data; dividing the received transmission data into K>1 number of data streams, where K is a positive integer; feeding each data stream into its associated parallel processing path so as to obtain K number of modulated data packets j = 1,..., K from the parallel processing paths, wherein each processing path involves the processing steps of: segmenting the data stream, encoding the segmented data stream with a first error detection code, and modulating the error detection encoded segmented data stream so as to obtain a modulated data packet j comprising a plurality of modulated symbols; multiplexing the K number of modulated data packets so that at least one modulated symbol of each modulated data packet j are placed in proximity to each other in time and / or frequency; and transmitting the multiplexed modulated data packets over a radio channel of the wireless communication system. Furthermore, the invention also relates to a receiving method, a transmitter device, a receive device, a computer program, and a computer program product thereof.

An uplink channel estimation method for downlink coherent coordinated multi-point transmission, the steps of which are: 1. Multi-cell multi-users send SRS, and the base station converts time-domain received signals into frequency-domain received signals; 2. The base station converts multi-cell multi-users according to The energy of large-scale fading channels is sorted from large to small. Channels between multi-cell multi-users and the base station are estimated one by one in an iterative manner according to the ranking. 3. When estimating the channel of the i-th user in the first iteration, use the estimated user channel to reconstruct the relevant received signal and remove it from the received signal of the base station. Then use information such as large-scale fading channel energy to do robust channel estimation. 4. When estimating the channel of the i-th user in the mth (m>1) iteration, use the channels of the 1st to i-1th users estimated by this iterative process and the channel estimated by the m-1th iterative process Correlated received signals are reconstructed from the i-th to K-th users' channels and removed from the received signals of the base station. Then do robust channel estimation.

The disclosure relates to a method performed by a battery monitoring unit configured for estimating a battery discharging current of a battery comprising the steps obtaining a state-of-charge value indicative of a ratio between a current capacity and a maximum capacity of the battery, obtaining sensor data indicative of a first plurality of battery voltage values obtained at multiple subsequent points in time, determining a first voltage trend over time of the first plurality of battery voltage values, estimating a battery discharging current of the battery based on a relation, where the relation is dependent on the first voltage trend over time and the state-of-charge value.

The invention is suitable for the field of mobile communication, and provides a distribution method and a system for midambles in a SDMA system. The method comprises the following steps: acquiring the number of SDMA users in the system; distributing different midamble deviations to each SDMA user according to the number of users; and indicating the distributed midamble deviations to the SDMA users. By using the method, different midamble deviations are distributed to the SDMA user, and the distributed midamble deviations are indicated to the SDMA users, thereby reducing the midamble code interferences among the SDMA users and enhancing the estimated quality of SDMA user channels.

The invention discloses an OFDM channel estimation method based on deep learning, which mainly solves the problems of poor channel estimation quality or high implementation complexity in the prior art. The scheme is: at the receiving end, obtain the time domain signal y and perform preprocessing to obtain the frequency domain signal Y of the pilot position of the received signal P ; Use the fully connected layer neural network to build the channel estimation model CE‑Net and train it; use the data in the real environment for migration training; place CE‑Net at the receiving end for online channel estimation. The invention reduces the implementation complexity of channel estimation, remarkably improves the quality of channel estimation, and can be used in OFDM communication system under comb pilot mode.

A method for estimating a probability distribution of the maximum coefficient of friction (μ) at a current and / or future waypoint (s, s*) of a vehicle. According to the method, a first probability distribution (WV1) for the maximum coefficient of friction (μ) at the waypoint (s) of the vehicle is determined by a Bayesian network from a first data set, which is, or was determined, for one, in particular current, waypoint (s) of the vehicle and which characterizes the maximum coefficient of friction (μ) at the waypoint (s) of the vehicle.

An uplink channel estimation method, a pilot signal transmission method, and a base station, wherein the uplink channel estimation method includes: configuring uplink pilot resources for a target user equipment, where the target user equipment is located in a preset area; receiving the preset area The pilot signal of the user equipment in the preset area, and respectively calculate the estimated value of the uplink channel of the user equipment in the preset area; based on the estimated value of the uplink channel of the preset number of user equipment in the preset area, estimate the target user Long-term channel characteristic parameters of the uplink channel of the device; according to the long-term channel characteristic parameters of the target user equipment uplink channel, reconfigure the uplink pilot resources of the target user equipment; receive the pilot signal of the target user equipment, and Perform instantaneous channel estimation on the uplink channel of the target user equipment, and use the estimation result as the estimated value of the uplink channel of the target user equipment. The channel estimation quality can be improved by adopting the above solution.

The invention aims at providing a method used for transmitting data in equipment-to-equipment communication and equipment thereof. Receiving equipment receives transmission data sent by corresponding sending equipment. The transmission data comprises data identification information identifying whether the transmission data is new transmission data. According to the data identification information, the new transmission data and retransmission data are determined. Redundancy version information of the retransmission data is determined. According to the redundancy version information, combined decoding is performed on the new transmission data and the retransmission data so as to acquire the decoded new transmission data. Compared to the prior art, by using the method and the equipment of the invention, through adding the data identification information identifying whether the transmission data is the new data in the transmission data, a receiving equipment terminal is easy to determine whether the received data is the new data; and according to a scheduling control signaling comprising timing correlation information, the redundancy version information of the retransmission data is determined. Through an indirect method, the redundancy version information is acquired so that signaling cost is reduced and a frequency spectrum utilization rate is increased.

The present invention discloses a method of processing channel state information and a user apparatus, the method comprising: the user device for the cooperative neighborhood silent muting channel status information reference signal resources, measuring the channel when there is a collaboration; the user device obtains a first channel quality indicator CQI according to the measurement of the channel when there is collaboration. By the present invention can improve the channel status information reference signal channel estimation quality.

A method for channel estimating in an Orthogonal Frequency Division Multiplexing (OFDM) system is disclosed in the present invention, which includes: performing the pilot main code elimination, tail connection, Inverse Discrete Fourier Transform (IDFT), multiuser separation, Discrete Fourier Transform (DFT) and tail cutting processing in frequency domain in turn for the received pilot signal in order to obtain the channel estimating signal of every user. A device for channel estimating in an OFDM system is also disclosed in the present invention. By applying the method and device of the present invention, thus, the channel estimating signals of multiple users are effectively separated and the quality of the channel estimating is improved.

The present invention provides a pilot mapping method, a pilot signal transmission method and device, a base station, and a terminal. In each PRB of a PRB group, the present invention is based on the antenna port number and the number of the PRB in the PRB group or on the entire system bandwidth. , to determine the mapping of the pilot frequency of each antenna port to the resource unit RE position in the PRB, so as to provide support for the realization of power borrowing, so as to make full use of the transmission power of the base station, improve the coverage of the pilot signal and the channel estimation of the receiving end quality.

The disclosure relates to a method performed by a battery monitoring unit configured for estimating a battery discharging current of a battery comprising the steps obtaining a state-of-charge value indicative of a ratio between a current capacity and a maximum capacity of the battery, obtaining sensor data indicative of a first plurality of battery voltage values obtained at multiple subsequent points in time, determining a first voltage trend over time of the first plurality of battery voltage values, estimating a battery discharging current of the battery based on a relation, where the relation is dependent on the first voltage trend over time and the state-of-charge value.