Methods, a Base Station (BS), and a User Equipment (UE) in a wireless communication system for transmitting and receiving control information are provided. The method for transmitting control information by a BS in a wireless communication system includes receiving information related to a signal transmitted by a second BS that the second BS which is a neighboring BS of the first BS, determining whether a second UE using an identical resource to that used by a first UE included in a cell of the first BS exists within a cell of the second BS based on the received information, when the second UE exists, generating control information for controlling a signal transmitted to the second UE by the second BS based on the received information, and transmitting the generated control information to the first UE through a control channel.

A wireless communication device and a channel estimating method thereof are provided. A wireless communication device includes an interlayer interference detector configured to receive a reference signal including a plurality of layers transmitted through a plurality of ports respectively connected to a plurality of antennas and to determine whether interlayer interference occurs based on the reference signal; and a channel estimator configured to estimate a channel matrix by executing an algorithm that is based on whether the interlayer interference occurs. The wireless communication device may decode a receive signal based on the estimated channel matrix.

The gains with non-orthogonal multiple access (NOMA) for uplink data transmissions can be high when chosen codes are orthogonal. However, when codes are non-orthogonal, the gains can be low. NOMA can be used when there is more than one mobile device using the same resources. Since orthogonal codes cannot be possible for every length, codes which have low cross-correlation properties can be used. However, when there are a large number of mobile devices using the same resources, the cross-correlation between the codes can cause interference to the mobile devices. Reducing the gains of a NOMA system can reduce the overall throughput. Thus, transmitting data on the same resources in a NOMA can occur in spite of the interference to the UEs transmitting data on the same resources. Therefore, a non-orthogonal multiple access design for a 5G network can mitigate interference.

A receiver embodiment has an equalizer that includes: an array of sample and hold elements, an array of linear equalizers, and an array of decision elements. Each sample and hold element in the array periodically samples an analog receive signal with a respective phase to provide an associated held signal. Each linear equalizer in the array forms a periodically-updated weighted sum of the held signals from the array of sample and hold elements. Each decision element in the array derives at least one sequence of symbol decisions based on at least one of the periodically-updated weighted sums. The resulting sequences of symbol decisions are output in parallel.

A transmitting station includes a plurality of transmitting weight multiplication units multiplying each of the transmission signal sequences by a transmitting weight, to be converted into M.sub.TX signals corresponding to UCAs forming an M-UCA so as to output the converted signals, and M.sub.TX transmitting OAM mode generation units inputting the signals corresponding to the UCAs and performing DFT on the input signals, so as to output to the corresponding UCA; and a receiving station includes M.sub.RX receiving OAM mode demultiplex units inputting signals from each of the UCAs forming the M-UCA and performing IDFT on the input signals, so as to output by each of received signal sequences, and a plurality of receiving weight multiplication units multiplying for each of them by a receiving weight, so as to demultiplex the spatially multiplexed received signal sequences and to output them in which interference between spatially multiplexed OAM modes is suppressed.

Disclosed is a user equipment (UE) apparatus, and method to facilitate beamforming between at least one eNB and at least one UE, comprising the at least one UE including an indication in a message from the UE to the at least one eNB of a type of receiver available for use by the UE to receive a return message from the eNB. There is also disclosed a method in an eNB to facilitate beamforming, and a UE and eNB arranged to carry out the described methods.

Disclosed are a Multiple-Input Multiple-Output (MIMO) system-based signal detection method. The method includes: performing a scaling calculation on a first covariance matrix according to first main diagonal elements in the first covariance matrix to obtain a second covariance matrix; obtaining a whitening matrix according to the second covariance matrix; taking the whitening matrix, a vector of a receiving signal and a channel matrix as input parameters, and inputting the parameters into a mathematical model for a whitening operation and perform a whitening calculation to obtain an operation result; and detecting a transmit signal in a MIMO system according to the operation result to obtain a detection result. Also disclosed are a MIMO system-based signal detection device and a computer storage medium.

An iterative receiver receives a signal including useful and interfering signal components, and detects information carried thereon. The receiver includes at least one estimating unit receiving the signal and providing an estimate of each signal component, and at least two decoding and regenerating units, at each iteration, each decoding and regenerating unit decoding a respective one among the estimates and for regenerating the respective decoded estimate into a respective regenerated estimate. At each receiver iteration, the at least one estimating unit provides estimates based on regenerated estimates provided at a previous iteration. The receiver further includes a control unit determines activation or deactivation of each decoding and regenerating unit at each process step of a detection process dedicated to detection of the signal, and determines, for each process step, a respective number of allowed iterations for each decoding and regenerating unit whose activation has been determined for that process step.

The gains with non-orthogonal multiple access (NOMA) for uplink data transmissions can be high when chosen codes are orthogonal. However, when codes are non-orthogonal, the gains can be low. NOMA can be used when there is more than one mobile device using the same resources. Since orthogonal codes can not be possible for every length, codes which have low cross-correlation properties can be used. However, when there are a large number of mobile devices using the same resources, the cross-correlation between the codes can cause interference to the mobile devices. Reducing the gains of a NOMA system can reduce the overall throughput. Thus, transmitting data on the same resources in a NOMA can occur in spite of the interference to the UEs transmitting data on the same resources. Therefore, a non-orthogonal multiple access design for a 5G network can mitigate interference.

Disclosed are a Multiple-Input Multiple-Output (MIMO) system-based signal detection method. The method includes: performing a scaling calculation on a first covariance matrix according to first main diagonal elements in the first covariance matrix to obtain a second covariance matrix; obtaining a whitening matrix according to the second covariance matrix; taking the whitening matrix, a vector of a receiving signal and a channel matrix as input parameters, and inputting the parameters into a mathematical model for a whitening operation and perform a whitening calculation to obtain an operation result; and detecting a transmit signal in a MIMO system according to the operation result to obtain a detection result. Also disclosed are a MIMO system-based signal detection device and a computer storage medium.