ssb modulation

The clear all;%% DSB modulation% DSB (bilateral band) simply multiplies the modulated signal m (t) and the carrier signal cos (WT) to dt=1/800; T = $; The total time of the% sample. Spectral resolution (DF=1/T). t = 0:DT:T-DT;FM = 2; % modulated signal frequency, Unit KHZFC = 20; The frequency of the% carrier signal, Unit khzm = cos (2*pi*fm*t); % modulated signal s = m.*cos (2*pi*fc*t); %DSB modulated signal [F,SF] = T2F (t,s), figure (1) plot (t,s)

The following are from Wikipedia. The principle of radio technology is that changes in the current strength in the conductor will generate radio waves. With this phenomenon, information can be loaded onto radio waves through modulation. When the radio waves pass through the space to the receiver, the electromagnetic field changes caused by the radio waves will generate currents in the conductor.Information is transmitted by extracting information fro

code. Bipolar rectangular pulse: The pulse level is positive (0 yards), negative (1 yards), positive and negative occurrence probability is equal. Unipolar Zero Code: relative to the NRZ code, 1 yards (pulse) occurs less than the width of the code element, so it can come back to 0 yards before the next code element--it is called Zero code. Manchester Special code: With the pulse between the positive and negative jumps to represent the digital signal, is minus 1 yards, minus, and is 0 y

as loading remote files. The convenience of using this language comes at a cost: You need to learn a new language and remember another way to form a web application. The old keyword "Void" is rewritten as "Void", and "V" must be capitalized. However, the definition of these keywords is automatically obtained from the function without explicit typing, this is quite convenient. In addition, there are some good syntaxes. After some experiments, I found that I couldn't stand it in some ways. I bega

Public Static voidMain (string[] args) {TenHello ("Hello"); One for(String S:args) Hello (s); A } -}2. Use javah-jni Hello command to generate Hello.h1 /*Do not EDIT this file-it are machine generated*/2#include 3 /*Header for Class Hello*/4 5 #ifndef _included_hello6 #define_included_hello7 #ifdef __cplusplus8 extern "C" {9 #endifTen /* One * Class:hello A * Method:hello - * Signature: (ljava/lang/string;) V - */ theJniexportvoidJnicall Java_hello_hello -(JNIENV *, Jclass, j

 calculation of MCS, modulation order, encoding rate, spectral efficiency relationship table Reference URL: http://4g-lte-world.blogspot.tw/2012/12/transport-block-size-code-rate-protocol.html Reference URL: http://blog.richliu.com/2013/10/22/1545/ (1) Premises: Therefore, the efficiency can be simplified to the following formula: tbs= size of the transfer block (table 7.1.7.2.1-1) crc= the number of bits that are attached for error checking =24

Exception message: The activated proc [DBO]. [storedprocedure_name] running on queue [queue_name] output the following:'The server Principal "sa" is not able to access the database "anotherdbname" under the current security context .'  

We have already designed some knowledge about vrotelnet telnet. So for this part of content, we will detail it again today. In the network management process, you often need to modify the vro configurations, such as modifying the wide area network

Final effect First, open the original image, create a curve adjustment layer, the parameters set as shown below. Second, create a gradient map adjustment layer, color settings as shown below. Third, create a

1, we on the phone to open the Dragonfly FM home page, and then click as shown in the Picture button, open the Radio category 2, then there are many channels, we click to select "Radio" effect as shown below. 3, then our Radio page can

This tutorial is more about text descriptions and layer references, and there are no process effects diagrams. The author provides only the ideas, details and some parameters of the settings also need their own heart to grasp. This tutorial is more

Micro-letter Speaker mode In fact very simple only a few steps can be achieved, below the Android phone for example. 1. We click on the phone in the micro-letter, enter and then click on the lower right corner of "I" (as shown in the following

In the debugging of the ICU communication equipment, because the serial communication of the old fault, so I suspect CF implementation of the SerialPort class whether there is a problem, so finally decided to use a pure API function to achieve

This tutorial mainly use Photoshop to pull out a day of bright white effect, recently this effect is very popular, the ultimate effect of warm and elegant, like this effect of friends together to learn it. This tutorial mainly use Photoshop to pull

Photoshop Red tone color Sunset pictures tutorial, graphic tutorials. Original: Effect Chart: Original: Effect Chart: 1. Open the picture, ctrl+alt+~ Select the High light section Create a curve adjustment layer The settings are as

Deal with the messy parts of the first fuzzy processing, especially the background part. Then appropriate to the character of the skin and then the whole polishing, so that the character part of a lot of prominent. Color before the first analysis of

Today we introduce a character Photo palette tutorial to bring up the red color effect of girls ' photos. Today we introduce a character Photo palette tutorial to bring up the red color effect of girls ' photos.The final effect chart is as

The course introduces the soft green effect color rendering method. The tutorial omits some of the actual parameters of the control, with only a few hints. When mixing, you need to try different values. Original Artwork 1 Effect 1

failure One, may be computer and modem connection is bad; Solution: First check whether the modem and hair normal connection, if the connection out of the problem, restart the cat, in turn to see whether the computer failure to solve. 　　Failure

Tip: You can modify some of the code before running scroll bar modulation and change background effects Hint: This is a color adjuster, now This example simply changes the color of the background, you can apply this method