Disclosed are a signal processing method and a signal processing circuit for suppressing Co-Channel Interference (CCI). By using the signal processing method and the signal processing circuit provided by the instant disclosure, determining whether each subcarrier is affected by CCI will be more precise because the non-data subcarrier and the data subcarrier are both processed. Moreover, in the instant disclosure, the results to determine whether the subcarriers are affected by CCI are recorded as an N×K error matrix, and thus the receiver may detect the static interference and the dynamic interference according to this N×K error matrix.

Provided are a method and a device for transmitting interference cancellation information for cancelling interference between cells in a wireless communication system. The method for transmitting interference cancellation information may comprise the steps of: on the basis of feedback information received from a terminal belonging to a cell controlled by a predetermined base station, estimating a symbol error rate or a packet error rate on a cell boundary region; by comparing the symbol error rate or the packet error rate with a predetermined critical value, determining a probability indicator indicating the probability of cancelling interference between cells at the cell boundary region; and transmitting information on the probability indicator to an adjacent cell.

A method of designing a digital filter for example for use in an FBMC/OQAM telecommunications system, with a target overlapping factor and meeting a specified signal to interference ratio is described, whereby a candidate filter design defined by an impulse response, satisfying the Nyquist criterion and having an overlapping factor higher than the target is selected, and the time and frequency coefficients of its impulse response inverted to define a new filter design; and

truncating the impulse response defining said new filter design to the minimum number of coefficients achieving said specified signal to interference ratio.

A transmitter may comprise a symbol mapper circuit and operate in at least two modes. In a first mode, the number of symbols output by the mapper circuit per orthogonal frequency division multiplexing (OFDM) symbol transmitted by said transmitter may be greater than the number of data-carrying subcarriers used to transmit the OFDM symbol. In a second mode, the number of symbols output by said mapper circuit per orthogonal frequency division multiplexing (OFDM) symbol transmitted by said transmitter is less than or equal to the number of data-carrying subcarriers used to transmit said OFDM symbol. The symbols output by the symbol mapper circuit may be N-QAM symbols. While the circuitry operates in the first mode, the symbols output by the mapper may be converted to physical subcarrier values via filtering and decimation prior to being input to an IFFT circuit.

Aspects of the present disclosure describe a guard band signal for communication on a guard band between a first frequency band utilized by a first radio access technology having a first sub-carrier spacing and a second frequency band utilized by a second radio access technology having a second sub-carrier spacing that is a multiple of the first sub-carrier spacing. The guard band signal includes a symbol that is repeated a number of times equal to the multiple. The guard band signal may be generated and transmitted by a transmitting device. The guard band signal may be received and decoded by a receiving device. The guard band signal is interpretable according to a first numerology of the first radio access technology and according to a second numerology of the second radio access technology.

Various communication systems may benefit from improved radio signaling. For example, communication systems may benefit from selective or partial filtering of a radio signal. A method, in certain embodiments, may include analyze at a network entity a radio signal comprising a plurality of orthogonal frequency division multiplexing symbols. The radio signal comprises at least one point of discontinuity between the plurality of symbols. The method may also include filtering a select time domain sample of the radio signal in the plurality of symbols. The select sample surrounds the at least one point of discontinuity. In addition, the method may include replacing the select time domain sample surrounding the at least one point of discontinuity of the radio signal with the filtered sample in the plurality of symbols.

The method includes organizing a plurality of subscriber lines into a first group of subscriber lines and a second group of subscriber lines, the first group of subscriber lines at least including all the subscriber lines of the plurality of subscriber lines that do not support non-linear precoding operation and the second group of subscriber lines including the remaining subscriber lines of the plurality of subscriber lines; scaling first signals to be transmitted over respective ones of the first group of subscriber lines to confine respective intermediate transmit power levels at the input of a modulo unit and further to bypass or make ineffective the operation of the modulo unit; and processing the so scaled first signals and second signals to be transmitted over respective ones of the second group of subscriber lines through the first and second precoding stages.

Each channel of a high speed multi-channel transmitter or receiver IC chip layout is partitioned into at least first and second channel portions that are electrically interconnected with one another. Each first channel portion has an end that is located on an optical interface side of the multi-channel transmitter or receiver IC chip. Each second channel portion has an end that is located on an electrical interface side of the multi-channel transmitter or receiver IC chip. The pitch between the first channel portions is very fine and matches the pitch between optoelectronic elements of an optoelectronic array chip that interfaces with the optical interface side of the multi-channel transmitter or receiver IC chip. The pitch between the second channel portions is significantly greater than the pitch between the first channel portions to prevent cross talk.

There is disclosed a method of operating a receiving radio node in a wireless communication network. The method includes receiving first signaling and second signaling, wherein the first signaling includes first Phase Tracking Reference Signaling, PT-RS, on a first set of subcarriers, and the second signaling includes second PT-RS on a second set of subcarriers, wherein the first set of subcarriers is non-overlapping with the second set of subcarriers, wherein receiving the first signaling is based on estimating a phase noise for the first signaling based on the first PT-RS and the second PT-RS. The disclosure also pertains to related devices and methods.

There is disclosed a method of operating a receiving radio node in a wireless communication network. The method includes receiving first signaling, the first signaling covering at least one allocation unit carrying Demodulation Reference Signaling, DMRS. Receiving includes performing Inter Carrier Interference, ICI, suppression for the at least one allocation unit carrying DMRS based on received DMRS. The disclosure also pertains to related devices and methods.