選擇映射法（SLM）和概率類算法都可以降低OFDM （Orthogonal Frequency Division Multiplexing）系統(tǒng)的PAPR（Peak to Average Power Ratio），傳統(tǒng)SLM算法自身較為復(fù)雜，但由于其優(yōu)良的性能，棄之可惜。研究表明，SLM算法和限幅類算法在性能上具有一定的互補(bǔ)性。任何一個算法未必能達(dá)到抑制PAPR的理想效果，在深入研究了兩個算法的基礎(chǔ)上，將其優(yōu)點聯(lián)合起來，以達(dá)到降低OFDM系統(tǒng)PAPR的目的。最后對聯(lián)合改進(jìn)算法進(jìn)行了分析與仿真，并驗證了聯(lián)合改進(jìn)算法的有效性和可行性
The RT9018A/B is a high performance positive voltage regulator designed for use in applications requining very low Input voltage and very low dropout voltage at up to 3A(Peak).
A fast customizable function for locating and measuring the Peaks in noisy time-series signals. Adjustable parameters allow discrimination of "real" signal Peaks from noise and background. Determines the position, height, and width of each Peak by least-squares curve-fitting.
Basic function to locate and measure the positive Peaks in a noisy
data sets. Detects Peaks by looking for downward zero-crossings
in the smoothed third derivative that exceed SlopeThreshold
and Peak amplitudes that exceed AmpThreshold. Determines,
position, height, and approximate width of each Peak by least-squares
curve-fitting the log of top part of the Peak with a parabola.
This paper describes a bus mastering implementation of the PCI Express protocol using a Xilinx FPGA. While the theoretical Peak performance of PCI Express is quite high, attaining that performance is a complex endeavor on top of an already complex protocol. The implementation is described and its performance is analyzed. Source code is offered for free download via the web.
AEC-Q100 qualified
? 12 V and 24 V battery systems compliance
? 3.3 V and 5 V logic compatible I/O
? 8-channel configurable MOSFET pre-driver
– High-side (N-channel and P-channel MOS)
– Low-side (N-channel MOS)
– H-bridge (up to 2 H-bridge)
– Peak & Hold (2 loads)
? Operating battery supply voltage 3.8 V to 36 V
? Operating VDD supply voltage 4.5 V to 5.5 V
? All device pins, except the ground pins, withstand at least 40 V
? Programmable gate charge/discharge currents for improving EMI behavior
