Communication systems and methods in accordance with various embodiments of the invention utilize modulation on zeros. Carrier frequency offsets (CFO) can result in an unknown rotation of all zeros of a received signal's z-transform. Therefore, a binary MOCZ scheme (BMOCZ) can be utilized in which the modulated binary data is encoded using a cycling register code (e.g. CPC or ACPC), enabling receivers to determine cyclic shifts in the BMOCZ symbol resulting from a CFO. Receivers in accordance with several embodiments of the invention include decoders capable of decoding information bits from received discrete-time baseband signals by: estimating a timing offset for the received signal; determining a plurality of zeros of a z-transform of the received symbol; identifying zeros from the plurality of zeros that encode received bits by correcting fractional rotations resulting from the CFO; and decoding information bits based upon the received bits using a cycling register code.

According to one embodiment, an electronic thermometer includes a temperature sensing unit, a conversion unit, an FSK modulation unit, and a transmission unit. The temperature sensing unit detects the temperature of a subject. The conversion unit converts a result detected by the temperature sensing unit to a digital signal. The FSK modulation unit converts the digital signal from the conversion unit to an FSK modulation signal. The transmission unit outputs a transmission signal including a pilot signal having a frequency assigned to the FSK (frequency shift keying) modulation signal and the FSK modulation signal subsequent to the pilot signal.

According to one embodiment, an electronic thermometer includes a temperature sensing unit, a conversion unit, an FSK modulation unit, and a transmission unit. The temperature sensing unit detects the temperature of a subject. The conversion unit converts a result detected by the temperature sensing unit to a digital signal. The FSK modulation unit converts the digital signal from the conversion unit to an FSK modulation signal. The transmission unit outputs a transmission signal including a pilot signal having a frequency assigned to the FSK (frequency shift keying) modulation signal and the FSK modulation signal subsequent to the pilot signal.

Method and system for communicating between a first piece of equipment and a second piece of equipment connected to the first piece of equipment via a single-conductor transmission line, wherein data (DATA1, DATA2) are transmitted from the first piece of equipment to the second piece of equipment by pulse width modulation of a transmission signal emitted on the transmission line, and wherein data are transmitted from the second piece of equipment to the first piece of equipment by amplitude modulation of said transmission signal.

A wireless communication apparatus performs communication for which a receiving timing and a transmitting timing are defined by using time slots. The wireless communication apparatus includes a control circuitry configured to control the wireless communication apparatus. The control circuitry includes a decoding circuitry configured to start a decoding process, on data received in a first time slot, immediately after a start of a second time slot subsequent to the first time slot. When a result of the decoding process is information requesting the wireless communication apparatus to perform transmission, the control circuitry is configured to perform a transmission preparation process from an end of the decoding process to a start of a third time slot subsequent to the second time slot, within a period of the second time slot for enabling the wireless communication apparatus to perform transmission.

A wireless transmitter processing chain includes digital radio frequency mixing circuitry to generate, in digital form, a representation of a transmit signal including multiple communication channels. From the digital representation, a wideband digital to analog converter creates the analog transmit signal that includes the communication channels. Individual mixers and filters follow, with mixing frequencies tuned to place the communication channels at the desired frequency centers.

A wireless transmitter processing chain includes digital radio frequency mixing circuitry to generate, in digital form, a representation of a transmit signal including multiple communication channels. From the digital representation, a wideband digital to analog converter creates the analog transmit signal that includes the communication channels. Individual mixers and filters follow, with mixing frequencies tuned to place the communication channels at the desired frequency centers.

Interference is processed in a waveform received at a device in a wireless network, the received interference comprising non-linear products of at least a first signal (C.sub.1) at a first carrier frequency and a second signal (C.sub.2) at a second carrier frequency. A complex composite baseband signal is generated comprising at least the first and second signal at baseband, occupying a respective first and second frequency range within a composite baseband frequency range and not overlapping in frequency. The complex composite baseband signal is processed by applying at least a first non-linear function (74a) to generate simulated interference comprising at least one simulated non-linear product. The received interference is then processed in dependence on the simulated interference.

The present technology relates to a signal processing apparatus and method which can suppress increase in power consumption.

In an aspect of the present technology, control data, which is for controlling frequency modulation to a carrier signal using digital data to be transmitted, and for suppressing a time average of a fluctuation amount of a frequency modulation amount more than a case of controlling the frequency modulation to the carrier signal using the digital data is generated, the frequency modulation is performed to the carrier signal on the basis of the generated control data, and the carrier signal to which the frequency modulation is performed is transmitted as a transmission signal. The present technology can be applied to, for example, a signal processing apparatus, a transmission apparatus, a reception apparatus, a communication apparatus, or an electronic apparatus having a transmission function, a reception function, or a communication function, or a computer which controls these.

The present technology relates to a signal processing apparatus and method which can suppress increase in power consumption.

In an aspect of the present technology, control data, which is for controlling frequency modulation to a carrier signal using digital data to be transmitted, and for suppressing a time average of a fluctuation amount of a frequency modulation amount more than a case of controlling the frequency modulation to the carrier signal using the digital data is generated, the frequency modulation is performed to the carrier signal on the basis of the generated control data, and the carrier signal to which the frequency modulation is performed is transmitted as a transmission signal. The present technology can be applied to, for example, a signal processing apparatus, a transmission apparatus, a reception apparatus, a communication apparatus, or an electronic apparatus having a transmission function, a reception function, or a communication function, or a computer which controls these.