Abstract: Signal transmission with symbol correction is disclosed. In one example, processing includes selection of one of known data and unknown data for each of symbols, as transmission data, while selecting a symbol of the known data for a reception side at one or both of timings of immediately before and immediately after selection of a symbol of unknown data for the reception side, modulation of each of the symbols of the selected transmission data, and transmission of a transmission signal obtained. Moreover, processing includes: reception of a transmission signal transmitted from a transmission side; and correction of a symbol of unknown data included in the received transmission signal on the basis of a symbol of known data included in the received transmission signal.

Abstract: An information processing device and method, a transmitting device and method, and a receiving device and method are disclosed for multiplexing transmission signals in the same channel. In one example, transmission signals are generated by performing chirp modulation on data to be transmitted, and the transmission signals are multiplexed by shifting transmission timings of a plurality of transmission signals in a time direction and transmitting the transmission signals. Further, a plurality of chirp-modulated transmission signals which are multiplexed by shifting the transmission timing in the time direction and transmitted from a transmission side are received, and the plurality of received transmission signals are dechirped at timings according to the transmission timings.

Abstract: A transmission device, method, and program for signal transmission with reduced intersymbol interference are disclosed. In one example, a mapping unit maps binary data to symbols and a generating unit generates a signal from the mapped symbols. A transmission band-limiting filter performs band limitation of the signal at a corner frequency higher than half a frequency of a symbol rate. A frequency modulating unit performs frequency modulation on a carrier wave on the basis of the band limitation and the signal.

Abstract: A sensor device according to an embodiment of the present technology includes a sensor head and a measurement unit. The sensor head includes a first probe and a second probe, the first probe including a first antenna section used for transmission, the second probe including a second antenna section used for reception, the second probe being situated at a specified distance from the first probe and facing the first probe. The measurement unit includes a signal generator that generates a measurement signal that includes information regarding characteristics of a propagation of an electromagnetic wave in a medium between the first and second antenna sections.

Abstract: An information processing device and method, a transmitting device and method, and a receiving device and method are disclosed for multiplexing transmission signals in the same channel. In one example, transmission signals are generated by performing chirp modulation on data to be transmitted, and the transmission signals are multiplexed by shifting transmission timings of a plurality of transmission signals in a time direction and transmitting the transmission signals. Further, a plurality of chirp-modulated transmission signals which are multiplexed by shifting the transmission timing in the time direction and transmitted from a transmission side are received, and the plurality of received transmission signals are dechirped at timings according to the transmission timings.

Abstract: Signal transmission with symbol correction is disclosed. In one example, processing includes selection of one of known data and unknown data for each of symbols, as transmission data, while selecting a symbol of the known data for a reception side at one or both of timings of immediately before and immediately after selection of a symbol of unknown data for the reception side, modulation of each of the symbols of the selected transmission data, and transmission of a transmission signal obtained. Moreover, processing includes: reception of a transmission signal transmitted from a transmission side; and correction of a symbol of unknown data included in the received transmission signal on the basis of a symbol of known data included in the received transmission signal.

Abstract: To provide a radar device capable of improving azimuth estimation accuracy by compensating the Doppler phase shift of a moving target in a TDMA FMCW MIMO radar device. Provided is a radar device that allows transmitting antennas to perform transmission by performing sequential switching such that antenna element numbers are anterior-posterior symmetrical centering on a reference time and synthesizes a beat signal at the reference time from a first beat signal received by a receiving antenna before the reference time and a second beat signal received after the reference time.

Abstract: [Object] To provide a signal processing device capable of enabling phase detection and achieving enhanced azimuth resolution with a small number of antenna elements. [Solution] There is provided a signal processing device including: a matrix generation unit configured to generate a matrix by multiplying a received signal vector of a reception signal by a transpose vector of the received signal vector, the reception signal being received by a reception array antenna including a plurality of reception antennas; and an estimation unit configured to estimate at least a phase of the reception signal on a basis of the matrix.

Abstract: To provide a radar device, capable of eliminating the influence based on the local feedthrough in the FMCW radar device. There is provided a radar device including: an oscillator configured to oscillate a local signal; a transmitting antenna configured to emit a transmission signal based on the local signal; a receiving antenna configured to receive a reflected wave in which the transmission signal is reflected from a target; a mixer configured to multiply the reflected wave and the local signal by each other to produce a multiplied signal; and a first shifter provided between the oscillator and the mixer and configured to shift a phase of the local signal.

Abstract: There is provided an excellent wireless communication device that can suitably perform short range communication by using a millimeter wave. Described are a method of generating a whirl of waves and its characteristic of attenuation proportional to a fourth power of a distance when the waves are in a state L=0 or L=±2. Accordingly, instead of an electric field induction antenna that cannot be used in the millimeter wave band, an initiator and a responder are both equipped with an array antenna generating the whirl of waves to perform communication by using the whirl of waves in the state characteristically attenuating in proportion to the fourth power of the distance, so that the party at the other end approaching can easily be detected while at the same time properly restricting a communication area and preventing improper connection.

Abstract: There is provided a MIMO radar device including: a first array antenna configured to have L (L?2) antenna elements disposed in one direction under a first rule; and a second array antenna configured to have M (M?2) antenna elements disposed in a same direction as the one direction of the first array antenna under a second rule, and to have at least two of the M antenna elements provided across the first array antenna.

Abstract: The present technology relates to a notch filter capable of easily obtaining a desired frequency characteristic. In an N-path filter unit, any one of a plurality of N capacitors is selected as a signal path through which a signal passes, so that the capacitor serving as the signal path is temporally switched. A plurality of N-path filter units is cascade-connected and a capacitor is inserted to a connection point between the N-path filter units. The present technology may be applied to the notch filter which eliminates a blocker and the like, for example.

Abstract: A transmission device, method, and program for signal transmission with reduced intersymbol interference are disclosed. In one example, a mapping unit maps binary data to symbols and a generating unit generates a signal from the mapped symbols. A transmission band-limiting filter performs band limitation of the signal at a corner frequency higher than half a frequency of a symbol rate. A frequency modulating unit performs frequency modulation on a carrier wave on the basis of the band limitation and the signal.

Abstract: [Object] To propose a wireless communication apparatus capable of realizing separation of transmission signals and reception signals with a low power consumption and a small size. [Solution] Provided is a wireless communication apparatus including: a gyrator that includes at least four terminals; a single-phase differential converter that mutually converts single-phase signals and differential signals; a low-noise differential amplifier that amplifies reception signals that the gyrator outputs; and a differential power amplifier that amplifies transmission signals to be output to the gyrator. The gyrator transmits signals from a first terminal and a second terminal in the direction of a third terminal and a fourth terminal.

Abstract: The present technology relates to a notch filter capable of easily obtaining a desired frequency characteristic. In an N-path filter unit, any one of a plurality of N capacitors is selected as a signal path through which a signal passes, so that the capacitor serving as the signal path is temporally switched. A plurality of N-path filter units is cascade-connected and a capacitor is inserted to a connection point between the N-path filter units. The present technology may be applied to the notch filter which eliminates a blocker and the like, for example.

Abstract: There is provided an excellent wireless communication device that can suitably perform short range communication by using a millimeter wave. Described are a method of generating a whirl of waves and its characteristic of attenuation proportional to a fourth power of a distance when the waves are in a state L=0 or L=±2. Accordingly, instead of an electric field induction antenna that cannot be used in the millimeter wave band, an initiator and a responder are both equipped with an array antenna generating the whirl of waves to perform communication by using the whirl of waves in the state characteristically attenuating in proportion to the fourth power of the distance, so that the party at the other end approaching can easily be detected while at the same time properly restricting a communication area and preventing improper connection.

Abstract: There is provided a device including a communication device including a measurement portion configured to measure a reflection coefficient of an antenna that performs proximity wireless communication, during transmission of a transmission signal by the antenna, and a judgment portion configured to judge whether a value of the reflection coefficient measured by the measurement portion changes exceeding a value of a reflection coefficient of the antenna in a normal state and a predetermined threshold value.

Abstract: [Object] To propose a wireless communication apparatus capable of realizing separation of transmission signals and reception signals with a low power consumption and a small size. [Solution] Provided is a wireless communication apparatus including: a gyrator that includes at least four terminals; a single-phase differential converter that mutually converts single-phase signals and differential signals; a low-noise differential amplifier that amplifies reception signals that the gyrator outputs; and a differential power amplifier that amplifies transmission signals to be output to the gyrator. The gyrator transmits signals from a first terminal and a second terminal in the direction of a third terminal and a fourth terminal.

Abstract: There is provided a device including a communication device including a measurement portion configured to measure a reflection coefficient of an antenna that performs proximity wireless communication, during transmission of a transmission signal by the antenna, and a judgment portion configured to judge whether a value of the reflection coefficient measured by the measurement portion changes exceeding a value of a reflection coefficient of the antenna in a normal state and a predetermined threshold value.

Abstract: There is provided a filter circuit including one or more first capacitors which accumulate and emit a charge at a predetermined timing, one or more first amplifiers which are provided from an input terminal side to the one or more first capacitors and output a current proportional to an input voltage into the input terminal, and one or more second amplifiers which are provided from an output terminal side to the one or more first capacitors and output a current proportional to an output voltage from the output terminal. A proportionality coefficient of each of the one or more first amplifiers and each of the one or more second amplifiers is arbitrarily set.