18ECE220T- AMCS- UNIT 1

__________inefficient for handling asymmetric data services since data traffic may only occupy a small portion of a channel bandwidth at any given time.

• TDD

• FDD

• TDMA

• CDMA

WiMAX physical layer (PHY) IS based on __________

• OFDM

• CDMA

• TDMA

• FDMA

WiMAX supports--------

• full-duplex FDD AND half-duplex FDD

• full-duplex FDD

• full-duplex TDM

• half-duplex FDD

FDD is suitable for-----------voice service

• single -directional

• bi-directional

• single and omni -direction

• omni -direction

TDD can flexibly handle ----------

• symmetric and asymmetric

• symmetric

• asymmetric

• Linear

WiMAX has the capability to deliver ----------------

• data

• voice

• voice, video and data

• video

Wireless Broadband Access is ---------

• multipoint-to-point

• multipoint-to-multipoint

• point-to -point

• point-to-multipoint

Channel bandwidth Wi-Fi (802.11b)

• 50 MHz

• 20 kHz

• 20 MHz

• 200 MHz

WiMax channel bandwidth is ---------

• 1.25 to 2.5 MHz

• 500 MHz

• 50 MHz

• 2.5 MHz

what is Frequency band for Wimax ------

• 2-11 GHz

• 100 KHz

• 50 GHz

• 500 MHz