A signal equalizer comprising: a feedback system, configured to acquire at least one signal value of an edge region of an input signal, and configured to adjust the signal value according to a crossing part of an eye diagram such that the crossing part converges to a zero point, wherein the crossing part corresponds to the edge region.

A method of suppressing unwanted signal portions in an IQ signal generated by an IQ signal generator system includes generating, by a baseband circuit, a multi-tone baseband IQ signal, modulating, by a IQ modulator circuit, the baseband IQ signal, thereby obtaining a modulated IQ signal, determining, by an analysis circuit, a level function describing a signal level of the modulated IQ signal over time and/or over a phase of the multi-tone signal, determining, by the analysis circuit, at least one error quantity based on the level function, wherein the at least one error quantity is indicative of at least one error in the IQ signal generator system, and controlling, by a control circuit, the baseband circuit and/or the IQ modulator circuit in dependence of the at least one error quantity determined, thereby correcting the at least one error in the IQ signal generator system.

A system enabling signal penetration into a building comprising first circuitry, located on an exterior of the building, for transmitting and receiving signals at a first frequency that experience losses when penetrating into an interior of the building, converting the received signals at the first frequency into a first format that overcome losses caused by penetrating into the interior of the building over a wireless communications link and converting received signals in the first format into the signals in the first frequency. A first antenna associated with the first circuitry transmits the signals in the first format into the interior of the building via a wireless communications link and receives signals from the interior of the building in the first format via the wireless communications link. First power circuitry provides system power to each of the first circuitry and the first antenna responsive to a provided power signal. Second circuitry, located on the interior of the building and communicatively linked with the first circuitry via the wireless communications link, for receives and transmits the converted received signals in the first format that counteracts the losses caused by penetrating into the interior of the building from/to the first circuitry. A second antenna associated with the second circuitry transmits the signals in the first format to the exterior of the building via the wireless communications link and for receives signals from the exterior of the building in the first format via the wireless communications link. Second power circuitry provides system power to each of the second circuitry and the second antenna responsive to a generated power signal. First wireless power transmission circuitry located on the interior of the building generates a wireless power signal for transmission to the exterior of the building over a wireless power link responsive to the provided power signal. Second wireless power transmission circuitry located on the exterior of the building receives the wireless power signal over the wireless power link and generates the generated power signal responsive to the wireless power signal.

Provided is a received signal processing method. The method includes: determining a range of symbol data in a received signal in a time domain; conducting signal integrity evaluation on the received signal within the range of the symbol data; and extracting signal data from the range of the symbol data according to a result of the signal integrity evaluation. Also provided is an apparatus, receiving device and storage medium.

A receiver may include a first filter configured to generate a first estimation of a symbol of a received signal and a second filter configured to generate a second estimation of the symbol of the received signal. The receiver may also include a decoder configured to decode the symbol using one of the first estimation and the second estimation and a decision circuit configured to select one of the first estimation and the second estimation to provide to the decoder for decoding of the symbol based on a comparison of the first estimation to an estimation threshold.

A low power receiver having a feedforward equalization, FFE, based continuous time linear equalizer, CTLE. The FFE CTLE comprises: an input for receiving an input signal; a main first path operably coupled to the input and comprising a source-follower transistor arranged to apply a scaling factor to the received input signal; a second path operably coupled to the input and comprising a delay arranged to apply a delay to the received input signal and a common source transistor common source transistor arranged to apply a scaling factor to the received delayed input signal, wherein the source-follower transistor and the common source, CS, transistor are connected as a single SF-CS stage whose output is arranged to subtract the output of the common source transistor from an output of the source-follower transistor.

This document discloses a solution for detecting interference in a radio access network. According to an aspect, a method includes as performed by a network node of the radio access network: acquiring a first equalized signal representing a signal received by a first radio head serving a terminal device, the first equalized signal including a signal received by the first radio head from the terminal device; acquiring a second equalized signal representing a signal received by a second radio head not serving the terminal device, wherein the second radio head is spatially distant from the first radio head; cross-correlating the first equalized signal with the second equalized signal and determining, on the basis of said cross-correlating, whether or not the second equalized signal also includes a signal received from the terminal device; and as a result of the second equalized signal being determined to include the signal received from the terminal device, causing execution of an interference management action.

A PAM4 receiver including an adaptive continuous-time linear equalizer and a method for training the same are disclosed. The PAM4 receiver and the method for training the same of the present invention employs a training pattern including a first training data pattern and second training data pattern to adaptively tune the PAM4 receiver to achieve accurate data reception and long-distance, high-speed communication.

Methods and apparatus for successive interference cancellation (SIC). In an embodiment, a method includes receiving symbols from a plurality of user equipment (UE), identify a target UE and non-target UEs, decoding code blocks from the symbols received from the non-target UEs to generate decoded bits for each code block. The method also includes performing a CRC check on each code block to generate a tag (0) when the CRC check passes and a tag (1) when the CRC check fails, and re-encoding the decoded bits to generate re-encoded code blocks having the associated tags attached. The method also includes reconstructing symbols from the re-encoded code blocks where symbols reconstructed from re-encoded code blocks having tag (0) are reconstructed with data and symbols reconstructed from re-encoded code blocks having tag (1) are reconstructed as zero value symbols, and utilizing the reconstructed symbols to cancel interference on symbols from the target UE.

A signal estimation apparatus classifies reception signal components included in a reception signal y and transmission signal components included in a transmission signal into a plurality of signal groups in accordance with a degree of a correlation between the reception signal component and the transmission signal component, on the basis of system information, sets, for each signal group, parameters β, ρ, τ and η that specifies a detail of a signal estimation method to be either one of a learned value that is learnable by a learning operation and a fixed value that is independent from the learning operation, and estimates, for each signal group, an estimation signal xe that is an estimated value of the transmission signal from the reception signal by using the signal estimation method specified by the set parameter.