To provide improved phase noise tolerance and improved identification of certain fault types, a modulation/demodulation procedure is disclosed for 5G and 6G. The transmitter can modulate a message according to the amplitude and phase of the overall waveform to be emitted, modulated according to predetermined amplitude and phase levels of the modulation scheme. The receiver can then separate the received waveform into orthogonal I and Q branches and measure their branch amplitudes, as usual. The receiver can then convert the branch amplitude measurements back into the original amplitude-phase modulation parameters using formulas provided. The receiver can then demodulate the message by comparing the overall amplitude and phase of each message element to the predetermined amplitude and phase levels of the modulation scheme, which thereby provides substantially increased phase noise tolerance at high frequencies. The procedure can also diagnose fault types and identify faulted message elements specifically, among other benefits.

A filter system includes: a first mixer, converting an input signal into a first signal according to a reference frequency signal, wherein the reference frequency signal corresponding to a target frequency band; an analog-to-digital converter, coupled to the first mixer, converting the first signal into a first digital signal; a digital filter, coupled to the analog-to-digital converter, filtering the first digital signal according to a first frequency band and generating a second digital signal, wherein the first frequency band corresponding to the first signal; a digital-to-analog converter coupled to the digital filter, converting the second digital signal into a second signal; and a second mixer, coupled to the digital-to-analog converter, converting the second signal into an output signal according to the reference frequency signal, wherein the output signal corresponds to the input signal filtered by the target frequency band.

A user equipment (UE) in a mobile communication system is described. The UE includes a long term evolution (LTE) transceiver for receiving configuration information from a network, and a processor for detecting an in-device coexistence (IDC) condition according to the configuration information and initiating a transmission of information on the detected IDC condition to the network. The information on the detected IDC condition comprises frequency information, and the transmission is initiated after the UE has failed to resolve the detected IDC condition on its own.

A user equipment (UE) in a mobile communication system is described. The UE includes a long term evolution (LTE) transceiver for receiving configuration information from a network, and a processor for detecting an in-device coexistence (IDC) condition according to the configuration information and initiating a transmission of information on the detected IDC condition to the network. The information on the detected IDC condition comprises frequency information, and the transmission is initiated after the UE has failed to resolve the detected IDC condition on its own.

A wireless communication device comprises a first communication unit, a second communication unit and a single control unit. The first communication unit wirelessly communicates by a first communication signal according to a first communication standard. The second communication unit wirelessly communicates by a second communication signal according to a second communication standard. The second communication signal has a frequency band that overlaps with that of the first communication signal. The second communication standard is different from the first communication standard. The control unit generates a first interference suppression signal for suppressing interference in the second communication signal and a second interference suppression signal for suppressing interference in the first communication signal, and suppresses the interference in the first communication signal and the interference in the second communication signal based on the first interference suppression signal and the second interference suppression signal.

A Bluetooth receiver has an RF front end which has a gain control input, the RF front end converting wireless packets into a baseband signal which is coupled to the input of an analog to digital converter (ADC). A clock generator provides a clock coupled to the ADC, and an AGC processor performs an AGC process to provide a gain which places the baseband symbols in a range that is less than 90% of the input dynamic range of the ADC. When in a connected state, the clock generator provides a clock which is slower than is required to complete the AGC process during a preamble interval, and the AGC process uses a few initial bits of the address field. The remaining bits of the address field is compared with the corresponding address bits of the receiver to determine whether to receive the packet.

Examples provide a device, an apparatus, a method, a computer program, a receiver, a mobile terminal and a base station. An interference detection device (10) is configured to generate an auxiliary interference signal for a multi-carrier receive signal. The device (10) comprises a generator (12) configured to generate a plurality of oscillator signals. The plurality of oscillator signals comprises at least a first oscillator signal with a first local oscillator frequency. The plurality of oscillator signals further comprises a second oscillator signal with a second local oscillator frequency. The device (10) further comprises a plurality of subsequent mixers. A first mixer (14) is configured to mix the multi-carrier receive signal with the first oscillator signal to output a first mixed signal. A second mixer (16) is configured to mix a second mixed signal with the second oscillator signal to output the auxiliary interference signal.

Decision feedback equalization (DFE) is used to help reduce inter-symbol interference (ISI) from a data signal received via a band-limited (or otherwise non-ideal) channel. A first PAM-4 DFE architecture has low latency from the output of the samplers to the application of the first DFE tap feedback to the input signal. This is accomplished by not decoding the sampler outputs in order to generate the feedback signal for the first DFE tap. Rather, weighted versions of the raw sampler outputs are applied directly to the input signal without further analog or digital processing. Additional PAM-4 DFE architectures use the current symbol in addition to previous symbol(s) to determine the DFE feedback signal. Another architecture transmits PAM-4 signaling using non-uniform pre-emphasis. The non-uniform pre-emphasis allows a speculative DFE receiver to resolve the transmitted PAM-4 signals with fewer comparators/samplers.

Decision feedback equalization (DFE) is used to help reduce inter-symbol interference (ISI) from a data signal received via a band-limited (or otherwise non-ideal) channel. A first PAM-4 DFE architecture has low latency from the output of the samplers to the application of the first DFE tap feedback to the input signal. This is accomplished by not decoding the sampler outputs in order to generate the feedback signal for the first DFE tap. Rather, weighted versions of the raw sampler outputs are applied directly to the input signal without further analog or digital processing. Additional PAM-4 DFE architectures use the current symbol in addition to previous symbol(s) to determine the DFE feedback signal. Another architecture transmits PAM-4 signaling using non-uniform pre-emphasis. The non-uniform pre-emphasis allows a speculative DFE receiver to resolve the transmitted PAM-4 signals with fewer comparators/samplers.

A noise reduction device includes: a combiner to shift a phase of one of a first signal propagating through a first propagation path and a second signal propagating through a second propagation path by a predetermined angle and combine the phase-shifted one signal of the first signal and the second signal with the other signal of the first signal and the second signal; and a phase difference absorption circuit having a phase shift characteristic that reduces a difference between a phase difference between two signals each having a lower limit frequency of a band of the broadcast wave and passing through the first propagation path and the second propagation path and a phase difference between two signals each having an upper limit frequency of the band of the broadcast wave and passing through the first propagation path and the second propagation path.