A method of reducing transmission power for an encoded data stream includes the steps of receiving an incoming data stream having equal probability for a plurality of incoming data bits, assigning a symbol scheme to the received data bits of the incoming data stream according to probabilities of occurrence of individual ones of the received data bits, and transmitting an outgoing data stream according to the assigned symbol scheme having a second average transmit power, different than the first average transmit power, for a plurality of outgoing symbols.

A method of reducing transmission power for an encoded data stream includes the steps of receiving an incoming data stream having equal probability for a plurality of incoming data bits, assigning a symbol scheme to the received data bits of the incoming data stream according to probabilities of occurrence of individual ones of the received data bits, and transmitting an outgoing data stream according to the assigned symbol scheme having a second average transmit power, different than the first average transmit power, for a plurality of outgoing symbols.

A receiver of the disclosure includes: a load modulator that transmits an active load modulation signal generated by active load modulation to a reader writer, in response to a carrier signal transmitted from the reader writer; and a controller that determines whether the active load modulation signal has reached the reader writer, and controls the load modulator to retransmit the active load modulation signal, after changing a phase of the active load modulation signal with respect to the carrier signal, in a case where the controller determines that the active load modulation signal has not reached the reader writer.

A receiver of the disclosure includes: a load modulator that transmits an active load modulation signal generated by active load modulation to a reader writer, in response to a carrier signal transmitted from the reader writer; and a controller that determines whether the active load modulation signal has reached the reader writer, and controls the load modulator to retransmit the active load modulation signal, after changing a phase of the active load modulation signal with respect to the carrier signal, in a case where the controller determines that the active load modulation signal has not reached the reader writer.

Systems and methods for wireless communication are provided. The systems and methods employ a backscatter tag that is configured to shift an incident carrier signal received by the tag to a different frequency band and then transmitting the frequency-shifted carrier signal to a receiver. The frequency band to which the carrier signal is shifted is a band in which interference is minimal or non-existent. Further, the backscatter tag is able to operate in an ultra-low power manner, thereby allowing the tag to be incorporated into components like on-body sensors so that the tag can embed additional information into the carrier signal for transmission and processing by the receiver. Exemplary electronic circuits and systems that utilize a frequency-shifted Backscatter, as well as methods for implementing a frequency-shifted Backscatter, are also provided.

Systems and methods for wireless communication are provided. The systems and methods employ a backscatter tag that is configured to shift an incident carrier signal received by the tag to a different frequency band and then transmitting the frequency-shifted carrier signal to a receiver. The frequency band to which the carrier signal is shifted is a band in which interference is minimal or non-existent. Further, the backscatter tag is able to operate in an ultra-low power manner, thereby allowing the tag to be incorporated into components like on-body sensors so that the tag can embed additional information into the carrier signal for transmission and processing by the receiver. Exemplary electronic circuits and systems that utilize a frequency-shifted Backscatter, as well as methods for implementing a frequency-shifted Backscatter, are also provided.

A BASE-T Ethernet transceiver is disclosed. The transceiver includes a BASE-T Ethernet transmit circuit that employs a data framing module. The data framing module includes an input interface to receive Ethernet block data bits, and, forward error correction encoder is coupled to the logic to encode at least a first portion of the data bits to generate first error check bits. A Reed-Solomon (RS) encoder is coupled to the logic to encode at least a second portion of the data bits in accordance with a Reed-Solomon error code to generate second error check bits. A symbol mapper modulates the Ethernet block data bits in accordance with an SQ64 constellation comprising back-to-back PAM8 symbols.

A BASE-T Ethernet transceiver is disclosed. The transceiver includes a BASE-T Ethernet transmit circuit that employs a data framing module. The data framing module includes an input interface to receive Ethernet block data bits, and, forward error correction encoder is coupled to the logic to encode at least a first portion of the data bits to generate first error check bits. A Reed-Solomon (RS) encoder is coupled to the logic to encode at least a second portion of the data bits in accordance with a Reed-Solomon error code to generate second error check bits. A symbol mapper modulates the Ethernet block data bits in accordance with an SQ64 constellation comprising back-to-back PAM8 symbols.

Radio Frequency (RF) systems configured to implement full-duplex wireless data transfer for rotary joints are disclosed. An example RF system includes a 60 GHz short distance communication link implemented using elliptically (e.g., circularly) polarized antennas. Such a system may provide a mm-wave, high-speed, wideband wireless communication link in a manner that is associated with simpler design and operation, mechanical integrity, and reduced power consumption, compared to alternative solutions.

A driver circuit for driving a passive resonant antenna-circuit, the latter comprising an inductance (L) and a capacitance (C) in parallel. The driver circuit comprises a first and a second interface node (Ni1, Ni2) connectable to the resonant antenna circuit, and comprises control circuitry for monitoring an oscillating voltage signal (Vosc) provided by the resonant antenna circuit, and for extracting timing information and amplitude information of said oscillating voltage signal (Vosc), and excitation circuitry for generating an excitation signal based on the measured timing and amplitude information, and for applying the excitation signal to the antenna circuit.