Disclosed is a Doppler measurement method comprising: generating a first function defined by reception signals in two consecutive subcarriers for a specific OFDM symbol; generating a second function defined on the basis of the signs and sizes of a real part and an imaginary part of the first function; repeatedly performing a process of generating the first function and the second function for all of a set of OFDM symbols; and determining, as a Doppler value, the phase of a third function obtained by adding the results of repeatedly performing the process.

A method and apparatus include establishing a communication connection with a communication network via an access point. As part of establishing a communication connection, information is received for defining a format of the communication connection. The format to be used as part of the communication connection includes one or more parameters which are received from the communication network when establishing the communication connection. At least one of the one or more received parameters serves to define a control channel transmission structure to be used as part of the format. A control channel including one or more control channel transmissions is then received in support of the established communication connection, based upon the control channel transmission structure defined by the at least one of the one or more received parameters.

A method and apparatus include receiving a resource allocation in a control information message. The resource allocation includes one or more resource blocks, wherein each of the one or more resource blocks comprises a plurality of subcarriers. An indication is received in the control information message identifying whether one or more guard subcarriers are present on a respective one or more of the edges of at least one resource block of the resource allocation.

According to some embodiments, a radio node receives target channels from a target cell and interfering channels from first and second interfering cells. The first target channel and the first interfering channel each comprise a first channel type, and the second target channel and the second interfering channel each comprise a second channel type. The radio node receives the first interfering channel when receiving the first target channel and determines first information accordingly. The radio node uses one or more gaps impacting receipt of the second interfering channel relative to receipt of the second target channel and determines second information based on receipt of the second target channel and second interfering channel. The radio node reduces interference associated with the at least one of the interfering cell based on at least one of the first information and the second information.

The present disclosure provides a method for interference cancellation which includes: calculating a mean value and a variance value of a received signal to obtain statistics information of the received signal; calculating an estimating log-likelihood ratio using the statistics information of the received signal; calculating a decoding log-likelihood ratios of the received signal using the estimating log-likelihood ratio of the received signal, and performing calculations to update the statistics information of the received signal; repeating the above steps for a pre-determined number of times, performing hard decisions on the decoding log-likelihood ratios of the received signal, and outputting data bits obtained from the hard decision. The present disclosure also provides an apparatus, an auxiliary method, a base station and a terminal device for interference cancellation. The mechanism of the present disclosure can reduce the impact of inherent interference in the FBMC/OQAM system on system performances, and increase spectral efficiency and design flexibility of the FBMC/OQAM system.

A system that incorporates aspects of the subject disclosure may perform operations including, for example, receiving, via an antenna, a signal generated by a communication device, detecting passive intermodulation interference in the signal, the interference generated by one or more transmitters unassociated with the communication device, and the interference determined from signal characteristics associated with a signaling protocol used by the one or more transmitters. Other embodiments are disclosed.

A method by which a terminal receives data in a wireless communication system can comprise the steps of: receiving configuration information relating to a control resource of a physical control channel; allowing one or more control resources included in the configuration information to be respectively set to a first control resource group or a second control resource group, and receiving a first physical control channel and a second physical control channel on the basis of the configuration information; receiving a first physical data channel on the basis of the first control resource group related to a control resource in which the first physical control channel is received; and receiving a second physical data channel on the basis of the second control resource group related to a control resource in which the second physical control channel is received.

An orthogonal frequency division multiplexing (OFDM) receiver includes detection logic, offset generation logic, tone erasure logic, and correction generation logic. The detection logic is configured to detect a signal containing a block of samples that includes a narrowband interferer from a communication channel. The offset generation logic is configured to align a frequency of the narrowband interferer to a center of a subcarrier frequency of the communication channel to produce an offset signal thereby introducing inter-carrier interference (ICI). The tone erasure logic is configured to remove the subcarrier frequency from the offset signal to produce an interferer erased offset signal. The correction generation logic is configured to remove the ICI to produce an interferer erased signal.

An orthogonal frequency division multiplexing (OFDM) receiver includes detection logic, offset generation logic, tone erasure logic, and correction generation logic. The detection logic is configured to detect a signal containing a block of samples that includes a narrowband interferer from a communication channel. The offset generation logic is configured to align a frequency of the narrowband interferer to a center of a subcarrier frequency of the communication channel to produce an offset signal thereby introducing inter-carrier interference (ICI). The tone erasure logic is configured to remove the subcarrier frequency from the offset signal to produce an interferer erased offset signal. The correction generation logic is configured to remove the ICI to produce an interferer erased signal.

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.