A message and rate based UE grouping system for dense downlink NOMA systems. For example, a network node (e.g., an access point, such as a base station) determines whether a first UE and a second UE should be grouped based on a determination of whether there is overlap between a first message for the first UE and a second message for the second UE.

A message and rate based UE grouping system for dense downlink NOMA systems. For example, a network node (e.g., an access point, such as a base station) determines whether a first UE and a second UE should be grouped based on a determination of whether there is overlap between a first message for the first UE and a second message for the second UE.

The present disclosure is related to an electronic device and communication method for non-orthogonal-resource based multiple access. An electronic device on a transmitting side in a communication system comprises a processing circuitry configured to determine information on codebook for non-orthogonal-resource based multiple access over a set of transmission resources, and interleave a plurality of occupied elements of at least two codewords of the same user equipment on the set of transmission resources, so as to reduce a correlation among a plurality of user equipments during the non-orthogonal-resource based multiple access.

The present disclosure is related to an electronic device and communication method for non-orthogonal-resource based multiple access. An electronic device on a transmitting side in a communication system comprises a processing circuitry configured to determine information on codebook for non-orthogonal-resource based multiple access over a set of transmission resources, and interleave a plurality of occupied elements of at least two codewords of the same user equipment on the set of transmission resources, so as to reduce a correlation among a plurality of user equipments during the non-orthogonal-resource based multiple access.

The present disclosure provides a base station capable of improving the frequency utilization efficiency in uplink. In the base station (100), a receiver (112) receives a transmission signal to be repeatedly transmitted over a plurality of allocation units, and a reception signal processor (114) demodulates the transmission signal based on a combination of non-orthogonal multiple access where signals of a plurality of terminals are not orthogonal with each other, and orthogonal multiple access where signals of a plurality of terminals are orthogonal with each other.

The present disclosure provides a base station capable of improving the frequency utilization efficiency in uplink. In the base station (100), a receiver (112) receives a transmission signal to be repeatedly transmitted over a plurality of allocation units, and a reception signal processor (114) demodulates the transmission signal based on a combination of non-orthogonal multiple access where signals of a plurality of terminals are not orthogonal with each other, and orthogonal multiple access where signals of a plurality of terminals are orthogonal with each other.

A message and rate based UE grouping system for dense downlink NOMA systems. For example, a network node (e.g., an access point, such as a base station) determines whether a first UE and a second UE should be grouped based on a determination of whether there is overlap between a first message for the first UE and a second message for the second UE.

A message and rate based UE grouping system for dense downlink NOMA systems. For example, a network node (e.g., an access point, such as a base station) determines whether a first UE and a second UE should be grouped based on a determination of whether there is overlap between a first message for the first UE and a second message for the second UE.

Embodiments of the present disclosure provide a method and device of signal processing in optical fiber communication systems. The method includes dividing electrical signals for a plurality of receivers in the optical fiber communication system into a plurality of groups, the plurality of groups each being associated with at least one of the plurality of receivers. The method also includes obtaining time-domain multiplexed signals by multiplexing the electrical signals in the plurality of groups in time domain. The method also includes multiplexing the time-domain multiplexed signals in the plurality of groups in frequency domain such that the time-domain multiplexed signals occupy respective sub-bands of a transmission bandwidth for the optical fiber communication system. The method also includes converting the frequency-domain multiplexed signals into analog optical signals for transmission.

Embodiments of the present disclosure provide a method and device of signal processing in optical fiber communication systems. The method includes dividing electrical signals for a plurality of receivers in the optical fiber communication system into a plurality of groups, the plurality of groups each being associated with at least one of the plurality of receivers. The method also includes obtaining time-domain multiplexed signals by multiplexing the electrical signals in the plurality of groups in time domain. The method also includes multiplexing the time-domain multiplexed signals in the plurality of groups in frequency domain such that the time-domain multiplexed signals occupy respective sub-bands of a transmission bandwidth for the optical fiber communication system. The method also includes converting the frequency-domain multiplexed signals into analog optical signals for transmission.