A computing device operating according to a frequency division multiplexed protocol in which communication occurs over a signal formed from a plurality of sub-channels selected from anywhere in a frequency spectrum. A computing device may select sub-channels cognitively by using information about sub-channels previously deemed suitable or unsuitable by that computing device or other computing devices. A described technique for determining sub-channel suitability includes analyzing radio frequency energy in the sub-channel to detect signals generated by another computing device or high noise levels. Information may also be used to cognitively select sub-channels to be analyzed, such as by first selecting for analysis previously-used sub-channels.

The present disclosure relates to a method performed by a BS for facilitating IC at a UE and an associated BS. The method includes predefining one or more sets of transmission parameters, where one or more of the transmission parameters in the one or more sets are constrained to take values from respective reduced sets of values out of the values available for the respective one or more transmission parameters, each set of the one or more sets of transmission parameters being identifiable by a unique indication. The method further includes configuring a transmission of the BS, which is to interfere downlink transmissions to the UE from a serving BS of the UE, by using one of the predefined one or more sets of transmission parameters. The present disclosure also relates to a method in a UE for IC and an associated UE.

A system for providing full-duplex communications comprises a first transceiver for simultaneously transmitting first signals having a first orthogonal function applied thereto on a first channel and simultaneously receiving second signals having a second orthogonal function applied thereto at a same time. A second transceiver simultaneously receives the first signals having the first orthogonal function applied thereto on the first channel and simultaneously transmits the second signals having the second orthogonal function applied thereto at the same time. Application of the first orthogonal function to the first signals and application of the second orthogonal function to the second signals prevents interference between the first signals and the second signals.

A wireless telecommunications system that mitigates infrasymbol interference due to Doppler-shift and multipath. Embodiments of the present invention are particularly advantageous for wireless telecommunications systems that operate in high-mobility environments, including high-speed trains and airplanes.

A data transmission method and apparatus are provided. The method includes: modulating, based on a codebook, every N information bits of to-be-transmitted data into one M-dimensional modulation symbol, where the codebook is generated based on an M-dimensional modulation constellation, the M-dimensional modulation constellation includes M modulation constellations, a constellation point in an m.sup.th modulation constellation in the M modulation constellations is obtained by mapping N information bits based on an m.sup.th information bit subset, the m.sup.th information bit subset includes information bits on some locations in the N information bits, and a union set of M information bit subsets respectively corresponding to the M modulation constellations is the N information bits, where M and N are integers greater than or equal to 2, and m is 1, 2, . . . , or M; and sending the generated M-dimensional modulation symbol. The technical solutions can reduce complexity when a modulation signal is demodulated.

A data alignment method capable of preventing degradation in demodulation performance due to variation in signal qualities when a data signal to which a Turbo code is applied is transmitted simultaneously from a plurality of cells. The method divides signal components to be used for data alignment into resources common to all the cells and resources dependent on the cells and transmits encoded and rate-matched data with the first half thereof aligned to the resources common to all the cells and the second half thereof aligned to the resources dependent on the cells.

A transmitting apparatus includes a first signal generating unit that generates, on the basis of data a first signal transmitted by single carrier block transmission; a second signal generating unit that generates, on the basis of an RS, a second signal transmitted by orthogonal frequency division multiplex transmission; a switching operator that selects and outputs the second signal in a first transmission period and selects and outputs the first signal in a second transmission period; an antenna that transmits the signal output from the switching operator; and a control-signal generating unit that controls the second signal generating unit such that, in the first transmission period, the RS is arranged in a frequency band allocated for transmission of the RS from the transmitting apparatus among frequency bands usable in OFDM.

The present invention relates to a wireless access system supporting a full duplex radio (FDR) transmission environment. A method for a terminal to measure interference in a wireless communication system supporting FDR according to an embodiment of the present invention comprises the steps of: receiving an interference measurement resource at a measurement subframe; and measuring, at the interference measurement resource, interference from a neighboring terminal on the basis of an interference reference signal transmitted from the neighboring terminal. In addition, data is not transmitted or is transmitted with zero-power in the interference measurement resource.

A communication apparatus includes a receiver and a decoder. The receiver includes a plurality of antenna elements and, in operation, receives from a base station apparatus a modulated signal mapped to one of a plurality of subframes defined in a frame corresponding to a communicable range to which the communication apparatus belongs. The plurality of subframes are defined by time-division, frequency-division, or time-and-frequency division of the frame. A maximum number of modulated signals that can be simultaneously transmitted in a subframe from the base station apparatus varies depending on the communicable range. The decoder, in operation, decodes the received modulated signal.

A base transmission signal and an auxiliary transmission signal may be used to (e.g., concurrently) improve a harvesting efficiency of an energy receiver while maintaining a prespecified performance level of an information receiver. An auxiliary transmission signal may be constructed. The construction of the auxiliary transmission signal may be signaled. An auxiliary transmission signal may be adapted. The adaptation of the auxiliary transmission signal may be signaled. An impact of auxiliary transmission signals on an information receiver's performance may be mitigated. One or more narrowband energy harvesting (EH) signals may be used, for example to provide a high peak to average power ratio (PARR) for EH devices (e.g., without significantly impacting overall transmitted signal PARR) characteristics. One or more narrowband auxiliary signals may be used, for example to enhance the PARR characteristics of an information signal sub-band.