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soft-input

  • Soft Input Soft Output Viterbi Algorithm

    Soft Input Soft Output Viterbi Algorithm

    標(biāo)簽: Soft Algorithm Viterbi Output

    上傳時間: 2013-12-27

    上傳用戶:yoleeson

  • % decode with soft-input viterbi algorithm 硬判決 % //k=4,r=1/2 %輸入數(shù)據(jù)為軟信息

    % decode with soft-input viterbi algorithm 硬判決 % //k=4,r=1/2 %輸入數(shù)據(jù)為軟信息,并且數(shù)據(jù)為均值為1的BPSK調(diào)制,如果均值為MEAN,那么62,63,103,104行應(yīng)做相應(yīng)修改

    標(biāo)簽: soft-input algorithm viterbi decode

    上傳時間: 2014-10-28

    上傳用戶:aig85

  • vhdl source,ver-fir-coefficient,simulink of fir with soft ware input

    vhdl source,ver-fir-coefficient,simulink of fir with soft ware input

    標(biāo)簽: ver-fir-coefficient simulink source input

    上傳時間: 2013-12-23

    上傳用戶:jackgao

  • This is sofe input and soft output programme you can use. Matlab is the similation tool.

    This is sofe input and soft output programme you can use. Matlab is the similation tool.

    標(biāo)簽: similation programme Matlab output

    上傳時間: 2017-06-21

    上傳用戶:lgnf

  • Lakewood (MAXREFDES7#)3.3V Input, ±12V (±15V) Output Isolated Power Supply

    Abstract: This document details the Lakewood (MAXREFDES7#) subsystem reference design, a 3.3V input, ±12V (±15V) output, isolated power supply. The Lakewood reference design includes a 3W primary-side transformer H-bridge driver for isolated supplies, and two wide input range and adjustable output low-dropout linear regulators (LDOs). Test results and hardware files are included.

    標(biāo)簽: MAXREFDES Lakewood Isolated Output

    上傳時間: 2013-11-02

    上傳用戶:fengzimili

  • Riverside (MAXREFDES8#)3.3V Input, 12V (15V) Output Isolated Power Supply

    Abstract: This document details the Riverside (MAXREFDES8#) subsystem reference design, a 3.3V input, 12V (15V) output, isolated power supply. The Riverside reference design includes a 3W primary-side transformer H-bridge driver for isolated supplies, and one wide input range and adjustable output low-dropout linear regulator (LDO). Test results and hardware files are included.

    標(biāo)簽: Riverside MAXREFDES Isolated Output

    上傳時間: 2013-11-16

    上傳用戶:會稽劍客

  • FP6291

    DC/DC 升壓IC:The FP6291 is a current mode boost DC-DC converter. Its PWM circuitry with built-in 0.25 Ω power MOSFET make this regulator highly power efficient. The internal compensation network also minimizes as much as 6 external component counts. The non-inverting input of error amplifier connects to a 0.6V precision reference voltage and internal soft-start function can reduce the inrush current. The FP6291 is available in the SOT23-6L package and provides space-saving PCB for the application fields.

    標(biāo)簽: 6291 FP

    上傳時間: 2013-11-07

    上傳用戶:3294322651

  • DN465 超低功耗升壓轉(zhuǎn)換器

      Industrial remote monitoring systems and keep-alivecircuits spend most of their time in standby mode. Manyof these systems also depend on battery power, so powersupply effi ciency in standby state is very important tomaximize battery life. The LT®8410/-1 high effi ciencyboost converter is ideal for these systems, requiringonly 8.5μA of quiescent current in standby mode. Thedevice integrates high value (12.4M/0.4M) output feedbackresistors, signifi cantly reducing input current whenthe output is in regulation with no load. Other featuresinclude an integrated 40V switch and Schottky diode,output disconnect with current limit, built in soft-start,overvoltage protection and a wide input range, all in atiny 8-pin 2mm × 2mm DFN package.

    標(biāo)簽: 465 DN 超低功耗 升壓轉(zhuǎn)換器

    上傳時間: 2013-11-23

    上傳用戶:新手無憂

  • Wide-input dc/dc modules offer

    When a system designer specifies a nonisolated dc/dc powermodule, considering the needed input voltage range isequally as important as considering the required performanceattributes and features. Generally, nonisolated moduleshave either a narrow or a wide input voltage range. Narrowinputmodules typically have a nominal input voltage of3.3, 5, or 12 V. For systems that operate from a tightlyregulated input bus—such as those that do not use batterybackup—a narrow-input module is often adequate sincethe input remains fairly stable.Offering greater flexibility, wide-input modules operatewithin a range of 7 to 36 V, which includes the popular12- or 24-V industrial bus. This enables a single module tobe used for generating multiple voltages. These modulesare ideal for industrial controls, HVAC systems, vehicles,medical instrumentation, and other applications that usea loosely regulated distribution bus. In addition, systemspowered by a rectifier/battery charger with lead-acidbattery backup almost always require wide-input modules.System designers who choose power supplies may wantto take a close look at the latest generation of wide-inputdc/dc modules.

    標(biāo)簽: Wide-input modules offer dc

    上傳時間: 2014-12-24

    上傳用戶:dragonhaixm

  • Input Signal Rise and Fall Tim

    All inputs of the C16x family have Schmitt-Trigger input characteristics. These Schmitt-Triggers are intended to always provide proper internal low and high levels, even if anundefined voltage level (between TTL-VIL and TTL-VIH) is externally applied to the pin.The hysteresis of these inputs, however, is very small, and can not be properly used in anapplication to suppress signal noise, and to shape slow rising/falling input transitions.Thus, it must be taken care that rising/falling input signals pass the undefined area of theTTL-specification between VIL and VIH with a sufficient rise/fall time, as generally usualand specified for TTL components (e.g. 74LS series: gates 1V/us, clock inputs 20V/us).The effect of the implemented Schmitt-Trigger is that even if the input signal remains inthe undefined area, well defined low/high levels are generated internally. Note that allinput signals are evaluated at specific sample points (depending on the input and theperipheral function connected to it), at that signal transitions are detected if twoconsecutive samples show different levels. Thus, only the current level of an input signalat these sample points is relevant, that means, the necessary rise/fall times of the inputsignal is only dependant on the sample rate, that is the distance in time between twoconsecutive evaluation time points. If an input signal, for instance, is sampled throughsoftware every 10us, it is irrelevant, which input level would be seen between thesamples. Thus, it would be allowable for the signal to take 10us to pass through theundefined area. Due to the sample rate of 10us, it is assured that only one sample canoccur while the signal is within the undefined area, and no incorrect transition will bedetected. For inputs which are connected to a peripheral function, e.g. capture inputs, thesample rate is determined by the clock cycle of the peripheral unit. In the case of theCAPCOM unit this means a sample rate of 400ns @ 20MHz CPU clock. This requiresinput signals to pass through the undefined area within these 400ns in order to avoidmultiple capture events.For input signals, which do not provide the required rise/fall times, external circuitry mustbe used to shape the signal transitions.In the attached diagram, the effect of the sample rate is shown. The numbers 1 to 5 in thediagram represent possible sample points. Waveform a) shows the result if the inputsignal transition time through the undefined TTL-level area is less than the time distancebetween the sample points (sampling at 1, 2, 3, and 4). Waveform b) can be the result ifthe sampling is performed more than once within the undefined area (sampling at 1, 2, 5,3, and 4).Sample points:1. Evaluation of the signal clearly results in a low level2. Either a low or a high level can be sampled here. If low is sampled, no transition willbe detected. If the sample results in a high level, a transition is detected, and anappropriate action (e.g. capture) might take place.3. Evaluation here clearly results in a high level. If the previous sample 2) had alreadydetected a high, there is no change. If the previous sample 2) showed a low, atransition from low to high is detected now.

    標(biāo)簽: Signal Input Fall Rise

    上傳時間: 2013-10-23

    上傳用戶:copu

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