Abstract: The invention concerns a method for precoding in an open loop transmission communications system. The method includes precoding data at each of M REs with a precoding matrix, precoding each of DM-RSs with one column of a precoding matrix which is same as that used for precoding M data REs. The method is distinguished by using at least L?2 different precoding matrices from a set of precoding matrices W to precode the M REs and the E allocated REs such that REs precoded with a first precoding matrix are interleaved with REs precoded with at least one additional, different precoding matrix and the number of used precoding matrices L is adapted to the transmission rank r and number N of available DM-RS.

Abstract: An apparatus for receiving non-orthogonal transmissions in a wireless communication system includes a processor configured to determine a first superposed symbol from a plurality of superposed symbols, based on superposition information and a first set of decoding information, wherein the first superposed symbol is corresponding to a first user equipment. The processor generates a residual signal based on the first superposed symbol and the superposition information, and determines a second superposed symbol based on the residual signal and a second set of decoding information, wherein the second superposed symbol is corresponding to a second user equipment. The superposition information comprises a quantity of the plurality of superposed symbols and an ordering of the plurality of superposed symbols.

Abstract: The present invention relates to a method in a network control node for transmission of control channel signals in a wireless communication system, the wireless communication system employing scheduling of physical resource blocks (PRBs) used for each new transmission of a control channel signal, wherein each control channel signal is related to one or more control channel elements (CCEs); the method comprising the steps of: removing user specific reference signals in associated physical resource blocks (PRBs) if the associated physical resource blocks (PRBs) comprises at least one control channel signal; inserting control channel signals in the associated physical resource blocks (PRBs); and transmitting the associated physical resource blocks (PRBs). Furthermore, the invention also relates to a computer program, a computer program product, and a network control node device thereof.

Abstract: The present disclosure relates to transmitter and receiving devices for wireless communication, where the transmitter device comprises a transceiver configured to receive at least one stream of information bits; and further comprises a processor configured to encode said at least one stream of information bits using at least one error correction code to obtain at least one mother code word having a mother code rate RM; obtain a shortened code word or extended code word based on the determination of whether the mother code rate RM is smaller than a transmission code rate RTX; modulate said shortened or extended code word to obtain modulated symbols; wherein said transceiver is further configured to transmit a signal comprising said modulated symbols over a radio channel of the wireless communication system. Furthermore, the present disclosure also relates to corresponding methods, a computer program, and a computer program product.

Abstract: The present invention relates to methods for concurrent transmission and reception of information symbols over time-frequency resource elements in a wireless communication system. According to the present invention coded bits interleaving is combined with symbol spreading using LDS signatures. Thereby, the performance of coded LDS transmissions can be substantially improved in wireless communication systems. Furthermore, the invention also relates to corresponding transmit device, receiver device, computer program, and computer program product.

Abstract: The invention concerns a method for precoding in an open loop transmission communications system. The method includes precoding data at each of M REs with a precoding matrix, precoding each of DM-RSs with one column of a precoding matrix which is same as that used for precoding M data REs. The method is distinguished by using at least L?2 different precoding matrices from a set of precoding matrices W to precode the M REs and the E allocated REs such that REs precoded with a first precoding matrix are interleaved with REs precoded with at least one additional, different precoding matrix and the number of used precoding matrices L is adapted to the transmission rank r and number N of available DM-RS.

Abstract: The invention concerns a method for precoding in an open loop transmission communications system, wherein the method includes precoding data at each of M REs with a precoding matrix, precoding each of DM-RSs with one column of a precoding matrix which is same as that used for precoding M data REs. The method is distinguished by using at least L?2 different precoding matrices from a set of precoding matrices W to precode the M REs and the E allocated REs such that REs precoded with a first precoding matrix are interleaved with REs precoded with at least one additional, different precoding matrix and the number of used precoding matrices L is adapted to the transmission rank r and number N of available DM-RS. The invention further concerns a radio transmitter and a user equipment.

Abstract: A wireless communication system includes at least one transmit node having at least two transmit antenna ports, and at least one receive node having at least one receive antenna port. User information is transmitted between the at least two transmit antenna ports and the at least one receive antenna port on a radio propagation channel. A reconstructed channel state information (R-CSI) for a reconstructed radio propagation channel is computed. The reconstructed radio propagation channel is obtained as an estimated radio propagation channel compensated by a function of an estimated signal power imbalance between the at least two transmit antenna ports. And an indicative of the estimated signal power imbalance and the R-CSI is sent to the at least one transmit node.

Abstract: Uplink sounding comprising sending one or more representations of a sounding request or a sounding request and configuration information indicator of uplink sounding in a wireless radio communication system is disclosed.

Abstract: The present invention relates to a method including signalling by a receive node at least one first transmission rank r to a transmit node, where 1?r ?R, wherein R is a maximum available rank for a transmission, and at least one predefined precoding matrix corresponds to the first transmission rank r, determining by the transmit node a second transmission rank r? for transmitting data from the transmit node to the receive node, where 1?r? ?R, defining at least two subsets of precoding matrices for at least one of the at least one first transmission rank r, selecting one of the at least two subsets of precoding matrices in accordance with a channel quality estimate for a radio channel, and signalling the selected one subset of precoding matrices, wherein the selected one subset of precoding matrices is associated with said the at least one predefined precoding matrix.

Abstract: The invention concerns a method for precoding in an open loop transmission communications system, wherein the method includes precoding data at each of M REs with a precoding matrix, precoding each of DM-RSs with one column of a precoding matrix which is same as that used for precoding M data REs. The method is distinguished by using at least L?2 different precoding matrices from a set of precoding matrices W to precode the M REs and the E allocated REs such that REs precoded with a first precoding matrix are interleaved with REs precoded with at least one additional, different precoding matrix and the number of used precoding matrices L is adapted to the transmission rank r and number N of available DM-RS. The invention further concerns a radio transmitter and a user equipment.

Abstract: The present invention relates to a method in a network control node for transmission of control channel signals in a wireless communication system, the wireless communication system employing scheduling of physical resource blocks (PRBs) used for each new transmission of a control channel signal, wherein each control channel signal is related to one or more control channel elements (CCEs); the method comprising the steps of: removing user specific reference signals in associated physical resource blocks (PRBs) if the associated physical resource blocks (PRBs) comprises at least one control channel signal; inserting control channel signals in the associated physical resource blocks (PRBs); and transmitting the associated physical resource blocks (PRBs). Furthermore, the invention also relates to a computer program, a computer program product, and a network control node device thereof.

Abstract: The invention concerns a method for precoding in an open loop transmission communications system, wherein the method includes precoding data at each of M REs with a precoding matrix, precoding each of DM-RSs with one column of a precoding matrix which is same as that used for precoding M data REs. The method is distinguished by using at least L?2 different precoding matrices from a set of precoding matrices W to precode the M REs and the E allocated REs such that REs precoded with a first precoding matrix are interleaved with REs precoded with at least one additional, different precoding matrix and the number of used precoding matrices L is adapted to the transmission rank r and number N of available DM-RS. The invention further concerns a radio transmitter and a user equipment.

Abstract: A wireless communication system includes at least one transmit node having at least two transmit antenna ports, and at least one receive node having at least one receive antenna port. User information is transmitted between the at least two transmit antenna ports and the at least one receive antenna port on a radio propagation channel. A reconstructed channel state information (R-CSI) for a reconstructed radio propagation channel is computed. The reconstructed radio propagation channel is obtained as an estimated radio propagation channel compensated by a function of an estimated signal power imbalance between the at least two transmit antenna ports. And an indicative of the estimated signal power imbalance and the R-CSI is sent to the at least one transmit node.

Abstract: Uplink sounding comprising sending one or more representations of a sounding request or a sounding request and configuration information indicator of uplink sounding in a wireless radio communication system is disclosed.

Abstract: A method and system of assigning reference signals to antennas and nodes in a wireless communication system, the wireless communication system comprising N number of transmitting nodes, wherein N is an integer N?1, is disclosed. The transmitting nodes are transmitting reference signals in a first slot and a second slot within sub-frames, over the same bandwidth. Each transmitting node has at least one transmit antenna, wherein different nodes can have different number of transmit antennas. The reference signals are of two different types, a first type of reference signals used for demodulation, and a second type of reference signals used for measurements.

Abstract: A method and system of assigning reference signals to antennas and nodes in a wireless communication system, the wireless communication system comprising N number of transmitting nodes, wherein N is an integer N?1, is disclosed. The transmitting nodes are transmitting reference signals in a first slot and a second slot within sub-frames, over the same bandwidth. Each transmitting node has at least one transmit antenna, wherein different nodes can have different number of transmit antennas. The reference signals are of two different types, a first type of reference signals used for demodulation, and a second type of reference signals used for measurements.