EST 42

The MTSO searches the location of a mobile phone. This is called ______

• Handoff

• Hand on

• Paging

• Receiving

Mobile cellular transmitter have a maximum output power of

• 1 mW

• 10 W

• 3 W

• 500 mW

A province in the Philippines has an area of 2000 sq km. it has to be covered by cellular mobile telephone service using cells with a radius of 2 km. assuming hexagonal cells, find the number of cell sites needed.

• 154

• 144

• 145

• 132

IS-95 system uses direct sequence spread spectrum with a chipping rate of

• 1.23 MHz

• 200 kHz

• 500 MHz

• 10.7 MHz

Modulation scheme used by cellular CDMA system

• BPSK

• QPSK

• QAM

• GFSK

How often will hand-offs occur when vehicle travels through a CMTS at 100 km per hour speed if the distance between cell sites is 10 km?

• 6 mins

• 12 mins

• 395 sec

• 10 hrs

The TACS base station frequency range of operation

• 821-849 MHz and 869-894 MHz

• 890-915 MHz and 935-960 MHz

• 870-885 MHz and 925-940 MHz

• 825-890 MHz and 925-970 MHz

The antenna separation required in a cellular system when the antenna height at the base is 15 m is

• 5.477 m

• 1.364 m

• 4.869 m

• 2.434 m

What type of modulation is used by a standard analog cordless telephone?

• AM

• FM

• PSK

• WAM

Cellular communication began in

• 1977

• 1956

• 1983

• 1999