A method by which a terminal transmits feedback information in a wireless communication system can comprise the steps of: selecting a filter index for maximizing a signal to interference-plus-noise (SINR) or a signal to leakage-and-noise ratio (SLNR) in a filter book defined in advance for each resource block (RB) or subband; and transmitting, to a base station, feedback information including the selected filter index for each RB or subband.

The disclosure relates to a radio transmitter device (and method) comprising a processor configured to: modulate a data frame onto a radio resource based on a transmission waveform, wherein the transmission waveform is formed according to a pulse shaping scheme; allocate a section of the radio resource for carrying information of the pulse shaping scheme; and transmit a signal waveform with selected pulse shaping scheme over the radio resource, wherein the signal waveform includes the information of the pulse shaping scheme and this information is sent over the allocated section of the radio resource. The disclosure further relates to a radio receiver device receiving such signal waveform.

In one aspect, a transmitter, for a first time interval, allocates first and second portions of a frequency band to first and second multicarrier modulation schemes with first and second subcarrier spacings that differ from one another. The data is transmitted to wireless devices in the first time interval using the first and second multicarrier modulation schemes in the first and second portions of the frequency band. For a second time interval, third and fourth non-overlapping portions of a frequency band are allocated to third and fourth multicarrier modulation schemes that have third and fourth subcarrier spacings that differ from one another. The third and fourth portions and/or schemes differ from the first and second portions and/or schemes. The data is transmitted in the second time interval using the third and fourth multicarrier modulation schemes in the third and fourth portions of the frequency band.

Highly efficient digital domain sub-band based receivers and transmitters.

The present disclosure provides a multi-carrier time-division multiplexing (MC-TDMA) modulation and demodulation method and system. Before multi-carrier modulation is performed on an input symbol, an interleaving allocation and an FFT may be performed, a time domain symbol may be transformed into a frequency domain symbol signal to perform a MDFT treatment. A sending end may adopt an analyzing filter bank structure, and pre-filtering and an IFFT may be performed on a signal successively. A pre-filter may be positioned between an NM point FFT and an M point IFFT, a PAPR value of the system may be reduced using the symmetry of a coefficient of a filter, and a frequency domain symbol signal may be allocated to different sub-bands for multi-carrier modulation.

A method for operating a device includes determining adaptation criteria for a waveform to be transmitted by a transmitting device over a communications channel towards a receiving device, and adjusting a generalized multi-carrier multiplexing parameter (GMMP) of the waveform in accordance with the adaptation criteria. The method also includes transmitting an indicator of the adjusted GMMP to at least one of the transmitting device and the receiving device.

The present disclosure provides a multi-carrier time-division multiplexing (MC-TDMA) modulation and demodulation method and system. Before multi-carrier modulation is performed on an input symbol, an interleaving allocation and an FFT may be performed, a time domain symbol may be transformed into a frequency domain symbol signal to perform a MDFT treatment. A sending end may adopt an analyzing filter bank structure, and pre-filtering and an IFFT may be performed on a signal successively. A pre-filter may be positioned between an NM point FFT and an M point IFFT, a PAPR value of the system may be reduced using the symmetry of a coefficient of a filter, and a frequency domain symbol signal may be allocated to different sub-bands for multi-carrier modulation.

In one aspect, a transmitter, for a first time interval, allocates first and second portions of a frequency band to first and second multicarrier modulation schemes with first and second subcarrier spacings that differ from one another. The data is transmitted to wireless devices in the first time interval using the first and second multicarrier modulation schemes in the first and second portions of the frequency band. For a second time interval, third and fourth non-overlapping portions of a frequency band are allocated to third and fourth multicarrier modulation schemes that have third and fourth subcarrier spacings that differ from one another. The third and fourth portions and/or schemes differ from the first and second portions and/or schemes. The data is transmitted in the second time interval using the third and fourth multicarrier modulation schemes in the third and fourth portions of the frequency band.

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 co-channel interference from those communication signals, based on differing diversity signature, timing offset, and carrier offset between the network signals and the co-channel interferers. In one embodiment, the co-channel interference excision is performed in an appliqu? that can be implemented without coordination with a network transceiver.

Receiver including a frequency transformer; the frequency transformer being configured to transform a received signal having a communication bandwidth to output a plurality of first subband signals each having a first bandwidth and the frequency transformer being configured to transform the received signal to output a plurality of second subband signals each having a second bandwidth, wherein the first bandwidth and the second bandwidth differ and wherein the receiver is configured to filter the plurality of first subband signals or the plurality of second of subband signals with pulse shape filters; the receiver being configured to determine a first message based on one or more of the plurality of first subband signals and the receiver being configured to determine a second message based on one or more of the plurality of second subband signals; the communication bandwidth being larger than or equal to the first bandwidth and/or the second bandwidth.