Digital data to analog signals
A modem (modulator-demodulator) converts digital data to analog signal. There are three ways to modulate a digital signal upon a analog carrier signal.
1. Amplitude shift keying (ASK): is a form of modulation which represents digital data as variations in the amplitude of a carrier wave.There are Two different amplitudes of carrier frequency represent '0' and '1'.
![1505_digital to analog.png](https://www.expertsmind.com/../CMSImages/1505_digital to analog.png)
2. Frequency shift keying (FSK): In Frequency Shift Keying, a change in frequency define different digits. Two totally different frequencies near carrier frequency represent '0' ,''1'.
![1135_digital to analog1.png](https://www.expertsmind.com/../CMSImages/1135_digital to analog1.png)
3. Phase shift keying (PSK): The phase of the carrier is discretely varied in relation either to a reference phase or to the phase of the immediately preceding signal element, in accordance with data that is being transmitted. Here phase of carrier signal is shifted to represent '0' and '1'.
![983_digital to analog2.png](https://www.expertsmind.com/CMSImages/983_digital%20to%20analog2.png)
Digital data to digital signals
A digital signal is strictly sequence of discrete , discontinuous voltage pulses. Each and every pulses a signal element. Here encoding scheme is an important factor in how successfully the receiver interprets the incoming signal.
Email based Computer Science assignment help - homework help at Expertsmind
Are you searching Computer Science expert for help with Digital to Analog Signals questions? Digital to Analog Signals topic is not easier to learn without external help? We at www.expertsmind.com offer finest service of Computer Science assignment help and computer science homework help. Live tutors are available for 24x7 hours helping students in their Digital to Analog Signals related problems. We provide step by step Digital to Analog Signals question's answers with 100% plagiarism free content. We prepare quality content and notes for Digital to Analog Signals topic under computer science theory and study material. These are avail for subscribed users and they can get advantages anytime.
Why Expertsmind for assignment help
- Higher degree holder and experienced experts network
- Punctuality and responsibility of work
- Quality solution with 100% plagiarism free answers
- Time on Delivery
- Privacy of information and details
- Excellence in solving computer science questions in excels and word format.
- Best tutoring assistance 24x7 hours