digital communication books

fingerprint. Compare the computed fingerprint to the fingerprint decrypted from the server certificate to see if the same is true if the authentication is the same. 3. After the validation is successful, the client generates a random string and then encrypts it with the public key of the server certificate and sends it to the server.4. The server decrypts this random value by using its own private key.5. The server begins to communicate with the client using this random value for symme

The purpose of communication is to transmit information from one place to another. How can we quantify the information? Shannon information theory defines the information entropy (entropy) H =-Σ PI log2 (PI), that is, the average information contained in each source output. Pi indicates the probability of each possible value. The unit of entropy is bit ). For example, I tell you: I am a boy. This information contains 1 bit, because gender only has two

From: http://www.ynradiology.net/Article_Show.asp? ArticleID = 652Objective To achieve digital medical image communication standard (DICOM ).Method Analysis implements DICOM standards.Results The DICOM standard is implemented using C ++.Conclusion The interface standardization of medical image equipment is a key factor for the success or failure of medical image equipment in the future. The development and

Today, with networks all over the world, digital communication is no longer a new concept. As an alternative to traditional PBX products, ip pbx (IP group telephone) is gradually forming a new generation of communication products that focus on traditional communication brain technologies and combine IP

Notes on Digital Communication Principles (ii) --- GSM System 1. GSMSystem Structure It demonstrates a typical GSM system: 1)Mobile (MS) The mobile station is a device used by users in the public GSM mobile communication network and the only device in the entire GSM system that users can directly access. Apart from what we usually call telephone components, anot

The above section says analog signal analog carrier modulation, this section says the following analog signal digital carrier code. Digital transmission of analog signals The analog signal is sampled-quantified-encoded into a digital signal into the channel transmission Sampling: processing a continuous signal over time into discrete signals in time It should be

HTTPS Encrypted Communication principle:The public key is paired, the public key is publicly available, and the private key is known.The information encrypted with the public key can only be decrypted by the private key corresponding to it.A to B to send data, a first with the public key of B to encrypt this piece of data, and then use their private key to the data (digital fingerprint, through the hash fun

Digital signal divided into baseband transmission and band-pass transmission Band-pass transmission is the modulation of baseband signals Why baseband modulation is needed: In practice, most channels (such as wireless channels) have band-pass characteristics and cannot transmit baseband signals directly, because digital baseband signals tend to have rich low-frequency components In order for the

Notes on Digital Communication Principles (iii) --- area and identification number I. Region InGSMRegion definition in the structure of the system's mobile communication network: 1.Service Area A service area refers to a region where a mobile station can obtain services, that is, different communication network

This tutorial introduces the production method of science and technology poster. In order to highlight the theme of science and technology, the background of the screen are used in some of the earth and communication digital images, such as rendering. The color of the screen to the main blue can better highlight the meaning of the era of communication hi-tech. Fi

server#include650) this.width=650; "src=" Http://s2.51cto.com/wyfs02/M02/83/F5/wKioL1eB4ULBbRatAADrS1cMXLU758.jpg "title=" QQ picture 20160710134652.jpg "alt=" Wkiol1eb4ulbbrataadrs1cmxlu758.jpg "/>This article is from the "Small Stop" blog, please be sure to keep this source http://10541556.blog.51cto.com/10531556/1813947Guessing digital games with TCP communication in Windows

There are too few materials available on the Internet when I first started to contact DICOM.I would like to share some of my experiences and experiences with you. I hope that the netizens who made DICOM in the Forum will be able to get some inspiration.Directory:1. What is DICOM?Binary DICOM file structure3. How to Write DICOM programs4. Develop DICOM program using the Development Kit5. DCMTK usage1. What is DICOM?The full name of DICOM is medical digital