Radio Transmission

George John
Published on 23-Aug-2018 11:39:14
In the electromagnetic spectrum, all omnidirectional waves in the frequencies 3KHz to 1GHz are called radio waves. They are widely used for communications since they are easy to generate, can travel long distances and can penetrate buildings. Radio waves have omnidirectional antennas, i.e. antennas that can send signals in all ... Read More

The Electromagnetic Spectrum

Chandu yadav
Published on 23-Aug-2018 11:35:50
The electromagnetic spectrum is the entire range of electromagnetic radiation according to the wavelength or frequencies. It has a range of frequencies from 1Hz to Hz. The waves in order of increasing frequencies are radio waves, microwaves, infrared rays, visible light, UV rays, X-rays and gamma rays.Among these range, ... Read More

Wireless Transmission

Ankith Reddy
Published on 23-Aug-2018 11:30:23
In wireless transmission media, data is transmitted in the form of electromagnetic waves that do not require any physical conductors for transmission. The waves are broadcast through free space and any device who has permission to connect can receive them. The three ways in which unguided signals travel are ... Read More

Passband Transmission

Arjun Thakur
Published on 23-Aug-2018 11:11:06
In passband transmission, the amplitude, phase or frequency of the carrier signal is regulated to transmit the bits. The incoming data stream is modulated onto a carrier and then transmitted over a band-pass channel. The types of passband transmission are illustrated as − Amplitude Shift Keying (ASK) In ASK, ... Read More

Baseband Transmission

George John
Published on 23-Aug-2018 11:07:03
In baseband transmission, the data bits are directly converted into signals. Generally a higher voltage level represents the bit 1, while a lower voltage level represents bit 0.The different encoding schemes are shown in the diagram. Among these, the first three are come in the category of polar encoding. In ... Read More

Fiber Optics vs Satellites

Chandu yadav
Published on 23-Aug-2018 10:41:55
Fiber optic communications and satellite communications are complementary to each other. Their properties are very different from one another and consequently their usage varies.Comparison between satellite communication and optical fiber communication can be done based upon the following areas −TerrainSatellite communication is best suited for rough terrains, poorly connected areas ... Read More

How to convert a string into int in C#?

George John
Published on 21-Aug-2018 17:45:55
Let’s say our string is − string str ="9999"; Now, use the Int32.Parse() to convert the string into integer − int n = Int32.Parse(str); Now display the integer value as shown in the following code − using System; class Demo { static ... Read More

How to work with attributes in C#

Ankith Reddy
Published on 21-Aug-2018 17:44:18
An attribute is a declarative tag that is used to convey information to runtime about the behaviors of various elements like classes, methods, structures, enumerators, assemblies etc. in your program. You can add declarative information to a program by using an attribute. A declarative tag is depicted by square ([ ... Read More

How to convert an array of characters into a string in C#?

Arjun Thakur
Published on 21-Aug-2018 17:42:33
Let us first set an array of 5 characters − char[] ch = new char[15]; ch[0] = 'T'; ch[1] = 'r'; ch[2] = 'i'; ch[3] = 'c'; ch[4] = 'k'; Now convert them into a string − string str = new string(ch); Here is the complete ... Read More

How to clone a generic list in C#?

Chandu yadav
Published on 21-Aug-2018 17:40:29
A list is a Generic collection to hold elements of same datatypes. To clone a list, you can use the CopyTo method. Declare a list and add elements − List < string > myList = new List < string > (); myList.Add("Programming"); myList.Add("Web Dev"); myList.Add("Database"); Now create a ... Read More