H04B1/68

FREQUENCY DEPENDENT RESIDUAL SIDE BAND TRAINING SIGNALS
20240214083 · 2024-06-27 ·

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a frequency dependent residual side band (FDRSB) training signal via one or more time resources. The UE may transmit an indication of network node FDRSB correction information that is based at least in part on the FDRSB training signal. The UE may receive a communication, reception of the communication comprising applying a UE FDRSB correction that is based at least in part on the FDRSB training signal. Numerous other aspects are described.

FREQUENCY DEPENDENT RESIDUAL SIDE BAND TRAINING SIGNALS
20240214083 · 2024-06-27 ·

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a frequency dependent residual side band (FDRSB) training signal via one or more time resources. The UE may transmit an indication of network node FDRSB correction information that is based at least in part on the FDRSB training signal. The UE may receive a communication, reception of the communication comprising applying a UE FDRSB correction that is based at least in part on the FDRSB training signal. Numerous other aspects are described.

FREQUENCY DEPENDENT RESIDUAL SIDEBAND INDICATIONS
20240224090 · 2024-07-04 ·

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a frequency dependent residual sideband (FDRSB) indication that indicates an average FDRSB power level associated with at least one transmission antenna of a network node. The UE may receive a communication from the network node, the receiving comprising demodulating the communication based on a state of an FDRSB correction function of the UE, the state of the FDRSB correction function being based on at least one of the average FDRSB power level or an estimated total noise level. Numerous other aspects are described.

FREQUENCY DEPENDENT RESIDUAL SIDEBAND INDICATIONS
20240224090 · 2024-07-04 ·

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a frequency dependent residual sideband (FDRSB) indication that indicates an average FDRSB power level associated with at least one transmission antenna of a network node. The UE may receive a communication from the network node, the receiving comprising demodulating the communication based on a state of an FDRSB correction function of the UE, the state of the FDRSB correction function being based on at least one of the average FDRSB power level or an estimated total noise level. Numerous other aspects are described.

Apparatus and method of harmonic interference cancellation

A baseband chip may include a transmitter configured to transmit a first signal. The baseband chip may also include a receiver configured to receive a second signal that includes a receive signal portion and a harmonic interference portion leaked from the transmitter. The baseband chip may further include a harmonic model block configured to multiply a first output from a first harmonic model associated with an amplitude modulation phase modulation (AMPM) look-up table (LUT) and a second output of a second harmonic model associated with an AMAM LUT to generate a third output. The harmonic model block may be further configured to estimate the harmonic interference portion based at least in part on the third output. The baseband chip may also include an interference cancellation block configured to cancel the harmonic interference portion from the second signal to obtain the receive signal portion.

DIGITAL CANCELLATION OF CIM3 DISTORTION FOR DIGITAL TRANSMITTERS

An apparatus includes a first circuit to receive a first input data, a second input data and coefficients, generate a first distortion term and a second distortion term based, respectively on the first input data and the coefficients and the second input data and the coefficients, and change a polarity of the first distortion term and the second distortion term. A first subtraction circuit subtracts the first distortion term from the first input data and generates first difference data, and a second subtraction circuit subtracts the second distortion term from the second input data and generates second difference data. A transmit data-path generates a RF output. The first difference data and the second difference data compensate, based on the polarity changes of the first distortion term and the second distortion term, respectively, one or more impairments of the RF output.

DIGITAL CANCELLATION OF CIM3 DISTORTION FOR DIGITAL TRANSMITTERS

An apparatus includes a first circuit to receive a first input data, a second input data and coefficients, generate a first distortion term and a second distortion term based, respectively on the first input data and the coefficients and the second input data and the coefficients, and change a polarity of the first distortion term and the second distortion term. A first subtraction circuit subtracts the first distortion term from the first input data and generates first difference data, and a second subtraction circuit subtracts the second distortion term from the second input data and generates second difference data. A transmit data-path generates a RF output. The first difference data and the second difference data compensate, based on the polarity changes of the first distortion term and the second distortion term, respectively, one or more impairments of the RF output.

METHOD AND APPARATUS FOR CHANNEL AGGREGATION AND SINGLE SIDEBAND TRANSMISSION
20240297681 · 2024-09-05 ·

A method for channel aggregation and single sideband transmission executed in a broad-band communication system is suggested in which only I and Q versions of a purely sinusoidal local oscillator signals are needed, easing the system scaling when large numbers of channels must be aggregated. In addition to that, instead of phase shifting of an intermediate frequency broadband signal rather two intermediate frequency broadband signals are generated, which are phase shifted by +90? or by ?90?. As a result, the problems of frequency dependent phase shifting explained in the background section is not relevant for the method according to the present disclosure. Also, a corresponding method for image reject reception and channel separation as well as a transmitter and receiver for performing the methods are suggested.

METHOD AND APPARATUS FOR CHANNEL AGGREGATION AND SINGLE SIDEBAND TRANSMISSION
20240297681 · 2024-09-05 ·

A method for channel aggregation and single sideband transmission executed in a broad-band communication system is suggested in which only I and Q versions of a purely sinusoidal local oscillator signals are needed, easing the system scaling when large numbers of channels must be aggregated. In addition to that, instead of phase shifting of an intermediate frequency broadband signal rather two intermediate frequency broadband signals are generated, which are phase shifted by +90? or by ?90?. As a result, the problems of frequency dependent phase shifting explained in the background section is not relevant for the method according to the present disclosure. Also, a corresponding method for image reject reception and channel separation as well as a transmitter and receiver for performing the methods are suggested.

Digital television transmitting/receiver and method of processing data in digital television transmitter/receiver

A digital television (DTV) transmitter and a method of coding data in the DTV transmitter method are disclosed. A pre-processor pre-processes the enhanced data by coding the enhanced data for forward error correction (FEC) and expanding the FEC-coded enhanced data. A data formatter generates one or more groups of enhanced data packets, each enhanced data packet including the pre-processed enhanced data. And, a packet multiplexer generates at least one burst of enhanced data by multiplexing the one or more groups of enhanced data packets. Herein, each burst of enhanced data includes at least one group of enhanced data packets. The DTV transmitter may further include a scheduler which generates first and second control signals to control operations of the data formatter and the packet multiplexer, respectively.