Answer / muhammad shoaib

Why do we use Multiple Access Schemes?
because it is necessary to have a scheme that enables
several multiple users to gain access to it and use it
simultaneously.

difference between FDMA, TDMA and CDMA:

TDMA: it is a channel access method for shared medium
networks. It allows several users to share the same
frequency channel by dividing the signal into different
time slots
FDMA: it is used in multiple-access protocols as a
channelization protocol. FDMA gives users an individual
allocation of one or several frequency bands, or channels
CDMA: allowing several transmitters to send information
simultaneously over a single communication channel. This
allows several users to share a band of frequencies

What kind of modulation is used for land phone communication systems?

3 Answers   LDPL, TATA,

---

why the array is derived data type

2 Answers   Google,

---

Tell me in a mosfet, what does the pinch off voltage refers to?

0 Answers  

---

What are the faults that might happen in SCADA ?

0 Answers   Havells,

---

why and when we use fibre optic ? how one can decide to use any type of cable specially fiber optic cable ?

4 Answers   CMS,

---

---

What is the state if the RED LED is glowing on DVxx card What is the state if the YELLOW LED is glowing on DVxx card What is the state if the GREEN LED is glowing on DVxx card Which frequency band DVDC is used Which frequency band DVGA is used

0 Answers   NSN,

---

what happens when a cdma user becomes as a roamer?

0 Answers   HCL,

---

why we give external oscillator input to the micro controller

2 Answers   TATA,

---

sir, please send me RRB Question papers for Section engineer Signal..

0 Answers  

---

Explain why is a two-input nand gate called universal gate?

0 Answers  

---

I want the technical question with answer for RRB J.E.exam

1 Answers   RRB, Venkys,

---

what is the purpose to give two power supply to opamp ie. +Vcc & -Vee?

1 Answers   SCOE,

---