Silicon Lab的sub-1g開發套件入門教程
標簽： sub-1g開發
上傳時間： 2016-09-18
上傳用戶：nirvana
實驗內容： 1.利用QuartusII的"MegaWizard Plug-In Manager", 設計輸入數據寬度是4bit的ADD、SUB、MULT、DIVIDE、COMPARE 把它們作為一個project,DEVICE選用EPF10K70RC240-4，對它們進行 時序仿真，將仿真波形（輸入輸出選用group）文件提交。 2.利用QuartusII的"MegaWizard Plug-In Manager"中的LPM_COUNTER， 設計一個20bit的up_only COUNTER, 要求該COUNTER在FE0FA和FFFFF之間自動循環計數； 分析該COUNTER在EPM7128SLC84-7、EPM7128SLC84-10、 和EPF10K70RC240-2、EPF10K70RC240-4幾種芯片中的最大工作頻率； 請將計數器的輸出仿真波形文件提交（特別注意在0FFFFCH--0FE0FFH之間的仿真波形圖）。 （僅EPF10K70RC240-4芯片,最大允許Clock頻率下）。
標簽： 實驗
上傳時間： 2016-10-18
上傳用戶：jack
The 4.0 kbit/s speech codec described in this paper is based on a Frequency Domain Interpolative (FDI) coding technique, which belongs to the class of prototype waveform Interpolation (PWI) coding techniques. The codec also has an integrated voice activity detector (VAD) and a noise reduction capability. The input signal is subjected to LPC analysis and the prediction residual is separated into a slowly evolving waveform (SEW) and a rapidly evolving waveform (REW) components. The SEW magnitude component is quantized using a hierarchical predictive vector quantization approach. The REW magnitude is quantized using a gain and a sub-band based shape. SEW and REW phases are derived at the decoder using a phase model, based on a transmitted measure of voice periodicity. The spectral (LSP) parameters are quantized using a combination of scalar and vector quantizers. The 4.0 kbits/s coder has an algorithmic delay of 60 ms and an estimated floating point complexity of 21.5 MIPS. The performance of this coder has been evaluated using in-house MOS tests under various conditions such as background noise. channel errors, self-tandem. and DTX mode of operation, and has been shown to be statistically equivalent to ITU-T (3.729 8 kbps codec across all conditions tested.
標簽： frequency-domain interpolation performance Design kbit_s speech coder based and of
上傳時間： 2018-04-08
上傳用戶：kilohorse
在包 hugeinteger 中創建功能類 HugeInteger，該類用來存放和操作一個不超過 40 位的大整數。 (1) 定義一個構造函數，用來對大整數進行初始化。參數為一個字符串。 (2) 定義 input 成員函數，實現大整數的重新賦值。參數為一個字符串，無返回 值。 (3) 定義 output 成員函數，將大整數輸出到屏幕上。無參數無返回值。 (4) 定義 add 成員函數，實現兩個大整數的加法。參數為一個 HugeInteger 對 象，無返回值，例如： HugeInteger A = new HugeInteger("12345"); HugeInteger B = new HugeInteger("1234"); A.add(B); 此時，A 為 13579，B 為 1234。 (5) 定義 sub 成員函數，實現兩個大整數的減法。參數和返回值同 add 函數。 (6) 定義若干大整數關系運算的成員函數，包括 isEqualTo（等于，=）、 isNotEqualTo（不等于，≠）、isGreaterThan（大于，>）、isLessThan（小 于，<）、isGreaterThanOrEqualTo（大于等于，≥）和 isLessThanOrEqualTo （小于等于，≤）。這些函數的參數為一個 HugeInteger 對象，返回值為一個 布爾類型，表示關系運算的結果，例如： HugeInteger A = new HugeInteger("12345"); HugeInteger B = new HugeInteger("1234"); 那么此時 A.isGreaterThan(B)的結果應當為 True，表示 12345>1234。
上傳時間： 2019-06-01
上傳用戶：idealist
Sub 大小寫修正與符號去除()
上傳時間： 2019-07-09
上傳用戶：tkhahah
Two important microwave remote sensors are the radar and the radiometer. There have been a number of books written on various aspects of radar, but there have been only a few written on microwave radiometers, especially on sub- jects of how to design and build radiometer systems. This book, which is the second edition of a book originally published in 1989, attempts to fill this void.
標簽： Radiometer Microwave Systems
上傳時間： 2020-05-23
上傳用戶：shancjb
Two important microwave remote sensors are the radar and the radiometer. There have been a number of books written on various aspects of radar, but there have been only a few written on microwave radiometers, especially on sub- jects of how to design and build radiometer systems. This book, which is the second edition of a book originally published in 1989, attempts to fill this void.
標簽： Radiometer Microwave Analysis Systems Design
上傳時間： 2020-05-26
上傳用戶：shancjb
One of the prerequisites for the development of telecommunication services is the understanding of the propagation of the waves, either acoustic, electromagnetic, radio or light waves, which are used for the transmission of information. In this work, we shall limit ourselves to the study of radio waves: this term apply to the electromagnetic waves used in radio communications. Their frequency spectrum is very broad, and is divided into the following frequency bands : ELF waves (f < 3 kHz), VLF (3-30 kHz), LF waves (30-300 kHz), MF waves (300-3000 kHz), HF (3-30 MHz), VHF waves (30-300 MHz), UHF waves (300-3000 MHz), SHF waves (3-30 GHz), EHF waves (30-300 GHz) and sub- EHF waves (300-3000 GHz).
標簽： Propagation Radio Wave
上傳時間： 2020-06-01
上傳用戶：shancjb
In this thesis several asp ects of space-time pro cessing and equalization for wire- less communications are treated. We discuss several di?erent metho ds of improv- ing estimates of space-time channels, such as temp oral parametrization, spatial parametrization, reduced rank channel estimation, b o otstrap channel estimation, and joint estimation of an FIR channel and an AR noise mo del. In wireless commu- nication the signal is often sub ject to intersymb ol interference as well as interfer- ence from other users.
標簽： Communications Space-Time Processing Wireless for
上傳時間： 2020-06-01
上傳用戶：shancjb
ESD is a crucial factor for integrated circuits and influences their quality and reliability. Today increasingly sensitive processes with deep sub micron structures are developed. The integration of more and more functionality on a single chip and saving of chip area is required. Integrated circuits become more susceptible to ESD/EOS related damages. However, the requirements on ESD robustness especially for automotive applications are increasing. ESD failures are very often the reason for redesigns. Much research has been conducted by semiconductor manufacturers on ESD robust design.
標簽： Guidelines Design Basic ESD
上傳時間： 2020-06-05
上傳用戶：shancjb
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