Wireless Communication Technologies

Which of the following is/are the basic part(s) of cellular system

• Mobile Unit

• Cell Size

• Mobile Telephone Switching centre

• All the above

In what frequency spectrum is divided into smaller spectra and is allocated to each user

• FDMA

• CDMA

• CGMA

• TDMA

In ___________ multiple access is achieved by allocating different time slots for thedifferent users

• TDMA

• CDMA

• FDMA

• SDMA

The basic GSM is based on ____ traffic channel

• Connection less

• Connection Oriented

• Packet Switching

• Circuit Switching

________ are typically characterized by very small system especially in very denselypopulated area

• 2.5G

• 2G

• 3G

• 3.5G

An antenna which attempts to direct all its energy in a particular direction is called

• One to one antenna

• Single directional antenna

• Prpogational antenna

• Directional antenna

Which mode is used for installing networks in wireless communication device characteristics

• Mobile and wireless

• Mobile and wired

• Fixed and wireless

• Fixed and wired

When all the radio channels are in use in a trunking system

• The user is blocked

• The queue may be provided

• The access to the system in denied

• All the above

Interference in cellular system is caused by

• Two base station operating in samefrequency band

• Leakage of energy signals by noncellular systems into cellular frequencyband

• Two calls in progress in nearby mobilestations

• All the above

Co channel reuse ratio depends on

• Frequency allocation of nearest cells

• Distance between the centers of the cochannel cells

• Radius of the cell

• Both a & b