ssb modulation

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PCM (Pulse-code modulation) Pulse coding modulation, pcm Pulse Coding modulation

PCM (Pulse-code modulation) Pulse coding modulation, pcm Pulse Coding modulation In audio processing, we often hear PCM data. What is PCM Data?PCM data is a digital signal after the analog signal passes through PCM. PCM is the process of converting the audio signal from analog signal (time continuous, value continuous) to digital signal (time discrete, value dis

Modulation and Demodulation Technology

bilateral amplitude modulation (DSB-SC), single sideband amplitude modulation (SSB), residual sideband amplitude modulation (VSB), etc. The nonlinear amplitude modulation has strong anti-jamming performance, including FM (FM), Frequency shift keying (FSK), Phase shift keyin

Communication Algorithm 7: Communication System Algorithm Design, bit rate, spread spectrum, modulation method algorithm selection, communication system modulation method

Communication Algorithm 7: Communication System Algorithm Design, bit rate, spread spectrum, modulation method algorithm selection, communication system modulation method 1. Rate Matching: Bit Rate Selection Channel environment: AWGN Signal-to-Noise Ratio: SNR Bit Rate R: 1/2, 1/3, 1/4, 1/8 MATALB simulation architecture: Source bit + convolution code/Turbo (1/3) + Rate Matching (different R) + PSK

Ask modulation and PSK modulation simulation

Ask modulation simulation circuit:Device Selection:Select the signal source of the voltage-controlled sine wave in the sources->controlled_valtage_sources->voltage_controlled_sine_wave.Parameter settings:Set the signal generator to produce 1KHz, duty-free ratio 50%, amplitude of 5V square wave signal.Set the voltage control sine wave signal source control array -5v corresponding frequency 0hz,5v corresponds to 10khz,output peak low value = 0v,output P

SSB (SQLserviceServiceBroker) entry instance

The SSB delegation mechanism in MSsql was used two days ago to provide a small message distribution function. Here we will share with you a simple example of this method. step 1: perpardatabasedatausemasterInventorygouseInventoryinventory (TitleIdnvarchar (6) notnull, Quantity, primarykey (TitleId, Q The SSB delegation mechanism in MSsql was used two days ago to provide a small message distribution functio

SSB router publish and subscribe to the Framework PPT document-share and download!

SSB router is a complete publishing-subscription framework based on SQL Server Service Broker technology. The message Creator sends the service broker message (also known as article) to SSB Router Server. The SSB Router Server is responsible for distributing messages to different subscribers (subscriber ). Each subscriber subscribes to receive specific messages.

Introduction to SSB (SQLservice Service Broker) entry instances

Step 1: perpar database dataCopy codeThe Code is as follows:Use masterGoCreate database InventoryGoUse InventoryGoCreate table inventory(TitleId nvarchar (6) not null,Quantity int not null,Primary key (TitleId, Quantity));Go Insert inventory values ('pc1001', 100 );Insert inventory values ('pc1002', 200 );Insert inventory values ('pc1003', 300 );Insert inventory values ('pc1004', 400 );Step 2: create the basic SSB framework. First, create an informat

SSB (SQLService Service Broker) Introduction _mssql

Step 1:perpar Database Data Copy Code code as follows: Use master Go Create Database Inventory Go Use Inventory Go Create Table Inventory ( TitleID nvarchar (6) NOT NULL, Quantity int NOT NULL, Primary KEY (Titleid,quantity) ); Go Insert inventory values (' pc1001 ', 100);Insert inventory values (' pc1002 ', 200);Insert inventory values (' pc1003 ', 300);Insert inventory values (' pc1004 ', 400); Step 2: Create an entire

SQL Server Distributed database Technology (LINKEDSERVER,CT,SSB)

the code and refer to how Service Broker works in conjunction with how it works in 11-8.Use masterGoALTER DATABASE ADVENTUREWORKS2008R2 set Enable_broker with rollback immediate;Go?Use ADVENTUREWORKS2008R2Go?Create message type Receivemsgtype validation = none;Create message type Sendmsgtype validation = none;?GoCreate Contract Samplecontract (Sendmsgtype sent by Initiator,receivemsgtype sent by Target,fraudendofstream sent by Initi Ator);Go?Create Queue Sampletargetque;Create service Sampletar

Comprehensive Explanation of modulation in ADSL Access Technology

The ADSL access technology is still quite common. So I studied the modulation knowledge in the ADSL access technology. I would like to share it with you here, hoping it will be useful to you. Asypolicric Digital Subscriber Line (Asymmetric Digital user Line) is an Asymmetric copper access network technology. It uses Digital encoding technology to obtain large data transmission rates from existing copper telephone lines, at the same time, it does not i

Android audio port communication (I)-2PSK signal modulation

made, then the mobile phone receives data with support from the hardware channel!3. How to modulated data When it comes to signal modulation and demodulation, many people will think of the Radio. Yes, the reason why the radio can hear singing thousands of miles away is that it uses electromagnetic waves as the transmission media, loads the signal of a sound source to an electromagnetic wave through specific modul

Basic modulation techniques:am FM

The origin of all radio modulation techniques stem back to the AM and FM basic modulation. AM modulation changes the carrier frequency according to the data signal while the FM changes the carrier frequency accord ing to the data signal. The information signal varies with time such as it could increase, decrease, or vanish to zero. The following signal represents

< reprint > Modulation and Demodulation Circuit detailed

Original link: http://www.elecfans.com/analog/20120509270848_4.htmlAmplitude modulation and detection circuitsRadio and radio communication is the use of modulation technology to add low-frequency sound signal to the high-frequency signal emitted. The process of restoring in the receiver is called demodulation. wherein the low frequency signal is called the modulation

Cisco Digital Modulation Technology

Modern mobile communication systems all use digital modulation technology. Because digital communication is flexible in network construction, it is easy to use digital error control technology and digital encryption to facilitate integration and access the Integrated Service Network (ISDN ), therefore, all communication systems are crossing the data in analog mode. As a part of the entire network, mobile communication will inevitably transition from a

What is the PWM (Pulse Width Modulation) VGA Interface?

Reprinted: What is PWM (Pulse Width Modulation): http://www.shenmeshi.com/Science/Science_20070315160722.html PWM (Pulse Width Modulation)-pulse width modulation (PWM) is an on/off type regulated power supply application. It is a very effective technology that uses the digital output of a microprocessor to control analog circuits. With the development of electro

How to disable Dynamic Frequency Modulation of CPU

How to disable Dynamic Frequency Modulation of CPU 1. how can I check whether the dynamic frequency modulation function www.2cto.com is enabled on the current OS and whether the clock speed of all cores is the maximum CPU speed: grep-E '^ model name | ^ cpu MHz'/proc/cpuinfo can also be used through: lsmod | grep cpufreq_ondemand to check whether the cpufreq_ondemand module is loaded or through: service --

Practice of Communication Principle (iii)--FM modulation

First, FM modulation 1, the code is as follows:CLC,CLEAR;FM= -; %modulation signal frequency (Hz) Am=0.5; %modulation signal Amplitude FC= 5e3; %Carrier Frequency (Hz) Ac=1; %Carrier amplitude MF=5; %FM Index%%%FIRSTLYKF= MF *2* PI * FM/AMDIATF= KF *AmB=2* (MF +1) *FM%%%SECONDLYFS= 64e3; %Sample Rate N= the; %number of sample points T= (0: N-1)'/fs;% time T%plott

Communication algorithm 14: Gmsk modulation and demodulation simulation link, DSP software radio implementation

I. GMSK modulation signal generation, software radio DSP implementation processTwo. Gmsk demodulation, one-bit differential demodulation, DSP implementation processThree. Based on the software radio architecture idea, has been implemented and optimized DSP, in line with the projectFour. ReferencesThe DSP realization of GSM communication system Gmsk"Gmsk modulation and demodulation and its TMS320C6XXXDSP rea

Introduction to modulation methods and application technologies of three XDSL technologies

With the rapid development of the Internet, communication technology is experiencing a huge revolution, because the number of users accessing the network rapidly increases. As a network connected to the end users in the communication network, the access network has become a hot topic in network technology. Currently, the main access technologies include hybrid fiber/coaxial (HFCs) access technology, optical fiber access technology, copper wire access technology and wireless access technology. Co

Communication algorithm nine: 4FSK modulation and demodulation simulation link

A. 4FSK principleDMR System, digital trunking communication system. The DMR protocol adopts a modulation mode of 4FSK, which is a constant envelope modulation, which transmits 2,400 symbols per second and each symbol carries two bits of information. The maximum frequency offset d is defined as follows:d = 3h/2t,h represents the frequency offset factor for each modulatio

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