Method for communicating data in a wireless communication system

A method, performed in a network node in an Orthogonal Frequency-Division Multiple Access, OFDMA, system for receiving data transmitted from a wireless device wherein the OFDMA system has multiple resource units, each resource unit occupying predetermined frequency ranges, the method comprising:

• receiving a multicarrier signal using an Orthogonal Frequency-Division Multiplexing, OFDM, receiver,
• identifying signals from the wireless device using a modulation scheme other than OFDM in at least one resource unit,
• converting the identified signals to time domain, and
• demodulating the converted signals.

A wireless device comprising:

• a communication interface configured to communicate data to a wireless network node in an Orthogonal Frequency-Division Multiple Access, OFDMA, system having multiple resource units each resource unit occupying predetermined frequency ranges, and
• processing circuitry configured to cause the wireless device to:
• obtain instructions to use at least one resource unit when transmitting data to the wireless network node,
• receive, using the communication interface;
• information regarding a set of allowed combinations of transmission parameters to use when modulating signals,
• modulate, using a modulator, signals to be transmitted from the wireless device based on the combination of the received transmission parameters to create signals having constant amplitude and/or continuous phase in the time domain using a modulation scheme other than Orthogonal Frequency-Division Multiplexing, OFDM, and
• transmit, using the communication interface, the modulated signals in the frequency ranges defined by the used at least one of the resource units.

A wireless network node comprising:

• a communication interface configured to receive data from a wireless device in an Orthogonal Frequency-Division Multiple Access, OFDMA, system having multiple resource units, each resource unit occupying a predetermined frequency range, and
• processing circuitry configured to cause the wireless network node to:
• receive, using the communication interface, a multicarrier signal using an Orthogonal Frequency-Division Multiplexing, OFDM, receiver,
• identify signals from the wireless device using a modulation scheme other than OFDM in at least one resource unit,
• convert, using a converter, the identified signals to time domain, and
• demodulate, using a demodulator, the converted signals.