In a multicarrier radio transmission system complex-valued symbols are assigned to at least a first subcarrier and a second adjacent subcarrier, wherein the symbols assigned to the second subcarrier are offset in frequency by half a subcarrier against the symbols assigned to the first subcarrier.

A method for signal transmission includes determining whether to perform repeated transmissions for a time length of a multiplication of L and M or more, wherein L indicates the overlapping factor of the system and M indicates a number of quadrature amplitude modulation (QAM) filter bank multi-carrier (FBMC) symbols, determining information on a type of the repeated transmissions to be performed, and transmitting FBMC symbols using a transmit power determined based on the type of the repeated transmissions. A base station includes a transceiver unit to send and receive signals, a control unit configured to determine whether to perform repeated transmissions for a time length of a multiplication of L and M or more, determine information on a type of the repeated transmissions to be performed, and transmit FBMC symbols using a transmit power determined based on the type of the repeated transmissions.

A method for transmission by a transmitting node in a communication network using a plurality of non-orthogonal carriers, including obtaining, by a processor in the transmitting node, an information element data set comprised of a first number of elements, applying, by the processor, a transform matrix to the information element data set to obtain an output samples data set comprised of a second number of elements, the transform matrix being based on a non-linear function applied to a non-orthogonal frequency division matrix comprised of a plurality of columns wherein each column is associated one of the plurality of non-orthogonal carriers, and transmitting the output samples data set from a transmitter in the transmitting node.

An apparatus and digital signal processing means are disclosed for excision of co-channel interference from signals received in crowded or hostile environments using spatial/polarization diverse arrays, which reliably and rapidly identifies signals with transmitted features that are almost-periodic over known framing intervals, and exploits those features to develop diversity combining weights that substantively extract those signals from that environment, based on differing diversity signature, timing offset, and carrier offset of those signals. In one embodiment, the signal identification and extraction is performed in an appliqu that can be implemented without coordination with an actual radio transceiver.

A method for determining sub-band information is performed by a terminal, and the terminal supports at least two manners for determining sub-band information. The method includes: receiving a first downlink signaling; and selecting a target manner for determining sub-band information from the at least two manners for determining sub-band information, in response to the first downlink signaling; wherein the sub-band information is information required by the terminal to perform frequency selective precoding.

A method for wireless communication at a UE and related apparatus are provided. In the method, the UE obtains a first wideband signal having a continuous wideband bandwidth, and separates the first wideband signal into multiple narrowband segments. The multiple narrowband segments each have a narrowband bandwidth less than the continuous wideband bandwidth and different frequency shifts. The UE further performs multiple FFT operations on the multiple narrowband segments to obtain a set of processed segments respectively corresponding to the multiple narrowband segments, and aggregates the set of processed segments to obtain a second wideband signal.

An embodiments includes generating, by an access point (AP), a trigger frame that solicits a response from one or more stations (STAs) and includes information for a dynamic sub-band switch operation, where the trigger frame includes a common info field and one or more user info fields, the common info field providing information that is common to the one or more STAs, each user info field providing information that is specific to a particular STA in the one or more STAs, transmitting, to the one or more STAs, the trigger frame to request the dynamic sub-band switch operation, and determining whether the dynamic sub-band switch operation is successfully performed at the one or more STAs based on whether or not a response is received from the one or more STAs in response to the trigger frame.

The present disclosure relates to subband configuration methods and communication apparatuses. In one example method, a terminal device receives first signaling and second signaling from a network device, where the first signaling indicates a first time unit set, the second signaling indicates a first subband pattern, the first subband pattern indicates a transmission direction of a frequency unit comprised in a first frequency domain resource, and the first frequency domain resource is a frequency unit set configured by the network device for the terminal device. The terminal device determines a transmission direction of a first time frequency resource based on the first subband pattern, where the first time frequency resource comprises a first frequency unit in the first frequency domain resource and a first time unit, and the first time unit is any time unit in the first time unit set.

An apparatus and digital signal processing means are disclosed for excision of co-channel interference from signals received in crowded or hostile environments using spatial/polarization diverse arrays, which reliably and rapidly identifies communication signals with transmitted features that are self-coherent over known framing intervals due to known attributes of the communication network, and exploits those features to develop diversity combining weights that substantively excise that cochannel interference from those communication signals, based on differing diversity signature, timing offset, and carrier offset between the network signals and the co-channel interferers. Co-channel interference excision may be performed in an appliqu that can be implemented without coordination with a network transceiver.

A method may include receiving, by a user device from a network node, information indicating a set of frequency resources assigned to the user device for uplink transmission and a spectrum shaping configuration indicating at least spectrum shaping with spectrum extension for transmission of reference signals via the set of frequency resources; performing, by the user device, spectrum shaping with spectrum extension for a reference signal; and transmitting the spectrum shaped and extended reference signal via at least a portion of the set of frequency resources.