7. 2.4-GHz EIRP Output Rules — FCC Example (Cont.) Point-to-Multipoint Point-to-Point The above values reflect the 3:1 rule. The above values reflect the 1:1 rule. 36 dBm 16 dBm 20 dBm Cisco Maximum 36 dBm 6 dBm 30 dBm FCC Maximum EIRP Maximum Gain Transmitter Power - dBm 56 dBm 36 dBm 20 dBm Cisco Maximum 36 dBm 6 dBm 30 dBm FCC Maximum EIRP Maximum Gain Transmitter Power - dBm
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9. 2.4-GHz EIRP Output Rules — ETSI Example (Cont.) Governing bodies with 20-dBm ceiling on EIRP: ETSI, France/Singapore, Israel, Mexico Point-to-Multipoint and Point-to-Point The above values reflect the 1:1 rule. *Tx = transmission 20 dBm 20 dBi 0 dBm Reduced Tx Power 20 dBm 13 dBi 7 dBm Reduced Tx Power 20 dBm 7 dBi 13 dBm Reduced Tx Power 20 dBm 5 dBi 15 dBm Reduced Tx* Power 19.2 dBm 2.2 dBi 17 dBm Cisco dipole Antennae 20 dBm 3 dBi 17 dBm Gov. Body Maximum EIRP Maximum Gain Transmitter Power-dBm
24. Comparing the Technologies 802.11a Data Rates 54 1125 128-QAM 48 1000 64-QAM 36 750 16-QAM 24 500 16-QAM 18 375 QPSK 12 250 QPSK 9 187.5 BPSK 6 125 BPSK Total Data Rate (Mb/s) Data Rate Per Subchannel (kb/s) Modulation with Subchannels
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26. Greater Reliability and Predictability Multiple-Input, Multiple-Output (MIMO) Improved MAC Efficiency 40-MHz Channels Maximal Ratio Combining (MRC) Beam forming Spatial multiplexing MAC aggregation packs smaller packets into a single unit. Block acknowledgment improves throughput. Two adjacent 20-MHz channels are combined to create a single 40-MHz channel. Primary 802.11n Components
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