A filter bank multicarrier communication system is proposed. The system adopts the real-valued discrete Hartley transform for both multicarrier modulation and demodulation, rather than the complex-valued inverse discrete Fourier transform for multicarrier modulation and the discrete Fourier transform for multicarrier demodulation in conventional filter bank multicarrier schemes, so as to reduce implementation complexity and to enhance system performance.

The present disclosure pertains to a method for operating a transmitting node in a wireless communication network. The method comprises transmitting a signal based on Filter Bank Multi-Carrier, FBMC, filtering, wherein the signal comprises signal carrying pulses, g(t), the pulses having a sampling interval T, the pulses being transmitted with a separation interval of T, with 0<<1. The disclosure also pertains to related methods and devices.

Provided is a data processing method and apparatus. The method includes: performing an inverse fast Fourier transform (IFFT) on frequency-domain data of L consecutive symbols to obtain time-domain data of the L consecutive symbols, wherein the frequency-domain data of the L consecutive symbols have a subcarrier spacing of f.sub.sc, and L2; and modulating the time-domain data of the L consecutive symbols with a preset function, where the modulated time-domain data of the L consecutive symbols have a symbol interval of 1/f.sub.1, and f.sub.1<f.sub.sc; where a length of a value interval of an independent variable of the preset function is N/f.sub.1, and N is a real number greater than or equal to 1.

Circularly pulse-shaped waveforms for communication systems are disclosed herein, including a single carrier modulation in which pulse-shaping is performed using a circular convolution by the transmitter for various modulation schemes. A transmitter, related method, and corresponding receiver are also disclosed for demodulation of the single carrier circularly pulse-shaped signal and data extraction.

The present disclosure relates to a method and an apparatus for reducing or eliminating interferences between resource blocks in a transmitter and/or a receiver of a filter bank multicarrier system is provided. According to at least one embodiment, the method comprises performing discrete Fourier transform (DFT) on a data symbol vector to be transmitted thereby generating a DFT-spread data symbol vector, performing a cyclic shift operation on the DFT-spread data symbol vector to arrange a small magnitude element of the DFT-spread data symbol vector at an edge of a resource block allocated to the DFT-spread data symbol vector, and performing filter bank multicarrier (FBMC) modulation on a cyclically shifted DFT-spread data symbol vector.

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.

A communication device, a method of operating a communication device, and a spread-spectrum receiver are disclosed. The method includes receiving an incoming RF signal, demodulating the incoming RF signal to generate a baseband signal, filtering the baseband signal with a normalized matched filter having filter characteristics matched to a pulse-shaping filter of the transmitter that generated the incoming RF signal, and extracting a received signal from a normalized output generated by the normalized matched filter. As a result, interferences and noise from harsh environments may be suppressed.

The disclosure refers to a synthesis filter bank, comprising: a transform module which is configured to receive a plurality of input signals, transform the plurality of input signals, and output a plurality of transformed signals, a plurality of filter modules, which are coupled to the transform module, and wherein each filter module of the plurality of filter modules is configured to receive two transformed signals from the transform module, process the two received transformed signals and output two processed signals, and a parallel-to-serial module which is coupled to the plurality of filter modules and which is configured to receive the processed signals from the plurality of filter modules, combine the received processed signals and output a combined signal. Furthermore, an analysis filter bank, a filter bank and methods for operating a synthesis filter bank and for operating an analysis filter bank are disclosed.

Provided is a data processing method and apparatus. The method includes: performing an inverse fast Fourier transform (IFFT) on data and processing the data with a preset function. The preset function is the product of a first function and a second function. The first function is a function in a time domain obtained by performing a Fourier transform on a root-raised cosine function in a frequency domain. The second function is in the time domain.