80211g ofdm a uses ofdm with same 24 ghz bandb
802.11g OFDM
a) Uses OFDM with same 2.4 GHz band
b) Achieves a 54-Mbps data rate
c) Works with same 802.11b equipment
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q explain about bandwidth ndash delay productbandwidth - delay product - a measure of competence of arq system bandwidth bits per second round-trip
q calculate utilization percentage of the link- system stop and wait arq- bandwidth 1mbps- round trip for one bit 20ms- frame length 1000
80211a ofdma orthogonal frequency-division multiplexing utilizing a 5-ghz bandb same as fdm except all sub bands are used by only one source at a
80211b hr dsss a high-rate dsss using a 24 ghz bandb similar to dsss excluding for encoding methodc uses complementary code keying cck encoding 4 or
80211g ofdm a uses ofdm with same 24 ghz bandb achieves a 54-mbps data ratec works with same 80211b
q explain full duplex data transmission- have two separate communication channels as well as use each one for simplex data traffic in different
carrier sense multiple accesscollision avoidancea necessary since wireless lans cannot implement csmacdb collision detection requires increased
fragmentation- wireless environment is very noisy- corrupt frames must be retransmitted- large frames must be divided into smaller ones to increase
q what is the rationale of the double-play strategyhedge fund enters agreement to sell hk in six months at expiration the hedge fund requires to buy
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