Ip Papers Ip Previous Year Papers. GGSIPU Previous Year Papers
| Q1 | ( a ) | Define signal to noise ratio of an amplifier? What is the significance of S/N ratio being -3dB? | 10 |
| ( b ) | Explain companding and why it is necessary? | ||
| ( c ) | The signal input to an amplifier is 10dBm and the noise input power is 1mW. Find the signal to noise ratio at the input of the amplifier. | ||
| ( d ) | Why are line codes required and what is DC wander? What is te difference between Walsh1 and Walsh2 codes? | ||
| ( e ) | Differentiate between a mid tread and mid riser scheme of quantization. |
| Q2 | What is step by step switching? What are the basic approaches to the design of subscriber access to Strowger system. Describe them. | 10 |
| Q3 | What are Vocoders and where can they be used? Discuss the utility of Vocoders in present day communication networks. Explain LPC type of Vocoder. | 10 |
| Q4 | What is the difference between the micro programmed control and hardwired control unit? What do you understand by exchange environment? Discuss the various levels of processing functions as applicable to a switching processor. |
No comments:
Post a Comment