can provide high speed mobile data service based on cdma2000. This paper briefly introduces the technical characteristic and forward link slot structure of 1x EV-DO and calculates the forward link coverage depending on various transmission conditions. Combined with the calculation
1x EV-DO can be analyzed by examples. The result shows that 1x EV-DO system is difficult to provide the wireless access data rate of 2048kbit/s in radio environment of indoor office
and it is possible to provide the most wireless access data rate of about 600kbit/s when the cell capacity is limited and the channel condition is ideal.