6 results about "Small peak" patented technology

The application provides a signal peak-to-average ratio suppression method and system, an electronic device and a storage medium. The peak-to-average ratios of transmission sequences corresponding to two factor sequences before and after flipping of a phase rotation factor of each signal block are sequentially compared, the phase rotation factor with a smaller peak-to-average ratio of the signal block is determined, and the phase rotation factor with a larger peak-to-average ratio of the signal block is no longer considered in the comparison process of subsequent signal blocks. Thus, the number of peak-to-average ratio calculations and comparisons is reduced, and the calculation complexity and calculation time are greatly reduced while ensuring a certain peak-to-average ratio suppression effect.

Embodiments of the present disclosure relate to a method, medium and device for reducing a peak-to-average ratio of an orthogonal frequency division multiplexing system. The method comprises: receiving original data of a signal to be transmitted; generating a first carrier signal of the orthogonal frequency division multiplexing system according to the original data; generating a plurality of mutually independent second carrier signals through a generative adversarial network according to the first carrier signal; calculating peak-to-average ratios of the plurality of mutually independent second carrier signals, and selecting a second carrier signal with the smallest peak-to-average ratio for transmission; wherein the first carrier signal and the second carrier signal both carry information of the original data. The present disclosure generates a plurality of carrier signals with the same information through a generative adversarial network for calculation and comparison of peak-to-average ratios, selects a second carrier signal with the smallest peak-to-average ratio for transmission, and thus reduces the peak-to-average ratio. Since point multiplication of a frequency domain signal and a phase rotation factor and large-scale inverse fast Fourier transform operations are not required, the computational complexity is greatly reduced.

A method performed by a receiver for Line-of-sight, LoS, path detection in a reception of a signal from a transmitter, the method comprising obtaining an antenna gain of the transmitter and determining an amplitude threshold (62) and / or a time threshold (63) to be used for the LoS path detection at least according to the obtained antenna gain. The method comprises detecting whether at least one smaller peak (6b) appears earlier than a max peak (6a) of a cross-correlated time domain series of the received signal that applies to the determined threshold(s) (62, 63). The at least one smaller peak (6b) is considered to apply to the determined threshold(s) if the at least one smaller peak (6b) is above the amplitude threshold (62) and / or after the time threshold (63). A peak from the detected peak(s) is determined as associated with the LoS path. Publ.

A sequence-based signal processing method and apparatus are provided. A sequence meeting a requirement for sending a signal by using a physical uplink control channel (PUCCH) is determined. The sequence is a sequence {fn} consisting of 12 elements, fn represents an element in the sequence {fn}, and the determined sequence {fn} is a sequence meeting a preset condition. Then, the 12 elements in the sequence {fn} are respectively mapped to 12 subcarriers, to generate a first signal, and the first signal is sent. By using the determined sequence, when the signal is sent by using the PUCCH, a low correlation between sequences can be maintained, and a relatively small peak-to-average power ratio (PAPR) value and a relatively small cubic metric (CM) value can be maintained. Therefore, a requirement of a communication application environment in which the signal is sent by using the PUCCH is met.

Method for determining a distance between two units (1,2), wherein the method comprises: Executing a double-sided two-way distance measurement protocol (S200), wherein the latter causes the two units (1,2) to send and receive signals, each of the signals being a composite tone generated as a composition of two waveforms separated in time by a gap such that the composition forms a bipolar waveform, wherein: the two units (1,2) comprise a first unit and a second unit; the sent and received signals comprise a first signal and a second signal; and The execution of the double-sided two-way distance measurement protocol (S200) causes the first unit to perform a group of steps comprising: Sending the first signal to the second unit at a first time; Receiving the second signal, which was sent by the second unit after receiving the first signal, at a second time, and Correlating an expected signal with a first comparison element, the latter being obtained on the basis of the received second signal, to determine a first time interval between the first time and the second time and accordingly derive the distance between the two units (1,2), where the first unit further includes the following group of steps: Triggering an audio recording prior to the transmission of the first signal, wherein the first comparison element is obtained by recording both the transmitted first signal and the received second signal; and Correlating a representation of the first signal with the first comparison element to determine the first time point, wherein the expected signal is correlated with the first comparison element to determine the second time point, wherein the first unit determines the first time interval as a difference between the determined second time point and the determined first time point; wherein the representation of the first signal and the expected signal are correlated with the first comparison element to obtain corresponding cross-correlation signals, each exhibiting a triple-peak pattern showing two smaller peaks separated by a larger peak.

To easily correct the position of leads in semiconductor devices. [Solution] In the photoelectron spectrum on the Si side (center), there is no significant difference for (5) to (8), which correspond to a region deeper than the center of the Ni silicide layer. However, in (1) to (4), which are shallower and within 50 nm from the surface, in Example (b), the Ni in the photoelectron spectrum... x In comparative example (a), a region of localized high intensity (small peak) is observed at higher energies than the main peak corresponding to Si, whereas these small peaks are not visible in comparative example (a). The energy in this region corresponds to SiO2 and SiO2. x This corresponds to (x<2). In other words, in Example (b), silicon oxide is formed at these depths, whereas in Comparative Example (a), such silicon oxide is not formed.