JARINGAN KOMPUTER (COMPUTER NETWORKING) - MEE IDU

Digital Modulation gives more data limit, high information security, faster framework accessibility with incredible quality correspondence. Consequently, computerized regulation methods have a more noteworthy interest, for their ability to pass on bigger measures of information than simple ones.       There are numerous kinds of computerized regulation strategies and we can even utilize a blend of these procedures also. In this section, we will talk about the most unmistakable computerized regulation methods.  A. Amplitude Shift Keying  The amplitude of the resultant yield relies on the info information whether it ought to be a zero level or a variety of positive and negative, contingent on the transporter recurrence.  Amplitude Shift Keying (ASK) is a kind of Amplitude Modulation that addresses the paired information as varieties in the plentifulness of a sign.  Following is the outline for ASK tweaked waveform alongside its information.  Any tweaked signal has a high recurrence trans

  MODULATION TECHNIQUES The video will mainly display and explain about : a.      Block Diagram of Modulation b.      Types of Modulation i)                Analog Modulation ii)              Digital Modulation c.      Analog Modulation i)                Amplitude Modulation ii)              Frequency Modulation iii)            Phase Modulation   I.                INTRODUCTION A message or information that needs to be sent to another user can relate to baseband signals . There will also be a transmitter that generates carrier also the receiver as the destination. The information signals are first converted onto electrical form known as a  baseband signal. The characteristic of the signals needs to be changed to make it suitable for transmitting. The process of varying the characteristics of a carrier signal is called as Modulation.   II.              NEED OF MODULATION Ø   Reduction in the higher of an antenna Ø   Avoid the mixing of the signals Ø  

Invisible electromagnetic waves makes phone calls and internet usage possible. Spectrum is electromagnetic frequency range which is a precious resources.           Each time we use our mobile phones to share or receive information, the mobile phones emits electromagnetic waves. These waves are picked up by cell tower and transmitted to the destination tower near the receiver to be sent to the end user. This technique iis called  cellular communication. In cellular communication, geographical areas are divided into different cells. The cells need to transmit different signals based on the users. Each user's frequency is unique. This way a certain device is built to accept certain signal with filter circuit. By using frequency modulation, two  frequencies (high and low) are needed to transmit signals.  However assigning a different signals fora approximately 5 billion users is impossible.  ELECTROMAGNETIC SPECTRUM > Ranges from radio waves to gamma rays > The higher frequencie