移动互联网及应用
The Mobile InternetHow Do We Get There?
The Last-mile SolutionNovel technologies maximizing the utilization of time, frequency, and spatial domainsOptical NetworkATTENUATION (/km) dB 100 40 20 10 4 2 1 0.4 0.2 0.1 0.04 0.02 0.01 0.004 0.002 0.001 30 20 15 10 WAVELENGTH (mm) 8 6 5 4 3 2 1.5 1 0.8
Optical Network
WiFiSEA LEVEL
WiMAX MIMO LNA 4GO2 H2O H2O
Modem
HPA
Modem
UWBH2O 10 15 20 25 30
O2
13,000 FT ALTITUDE
40 50 60 80 100 FREQUENCY (GHz)
200
300 400
Technical ChallengesForward Error Correction Distortion Mitigation Smart Antenna Bandwidth Efficiency Spectrum Availability
ADC/DAC
LNA/HPA
Bandwidth& Spectral Efficiency
Millions of Available Multi-Mbps Channels