This paper analyzes the reverse link of cdma2000 system. It describes the physicallayer and tries to reconcile the simulation result with theoretical predictions based on3GPP2 standard and Cadence SPW software system. Reverse Pilot Channel, AccessChannel, Enhanced Access Channel, Common Control Channel and Traffic Channelhave been designed and combined by the MAC layer control modules at the mobileand base station sides.
At first the application of cdma2000 1x system and the technology of the 3rd generation mobile communication is introduced. Then the structure of the cdma2000 1x reverse link which includes three parts (the part of reverse pilot, the part of reverse access procedures and the part of reverse traffic channel) is analysed, and the technical improvement of each part in the structure is also discussed.
This paper analyzes the reverse link of cdma2000 system. It describes the physicallayer and tries to reconcile the simulation result with theoretical predictions based on3GPP2 standard and Cadence SPW software system. Reverse Pilot Channel, AccessChannel, Enhanced Access Channel, Common Control Channel and Traffic Channelhave been designed and combined by the MAC layer control modules at the mobileand base station sides.
At first the application of cdma2000 1x system and the technology of the 3rd generation mobile communication is introduced. Then the structure of the cdma2000 1x reverse link which includes three parts (the part of reverse pilot, the part of reverse access procedures and the part of reverse traffic channel) is analysed, and the technical improvement of each part in the structure is also discussed.
This paper first develops the SIR estimators based on the reverse pilot channel and then derives the approximate analytic expression for its Mean Squared Error (MSE) function, the accuracy of which is validated through simulation.
A air inclined shaft at the 33rd panel of the 12th coal seam, №.4Coal Mine, Yangquan Coal Bureau was drilled by raise boring machine. The air inclined shaft is 1.2 m in diameter, 79 m in inclined length and 78°36'49" in slope angle. Before raising, machine chamber for setting raise boring machine and mucking chamber were drived. Machine chamber at upper roadway of 811.4 m level has a section of 4×3.2 m and is 10 -11 m in length. Mucking chamber at lower roadway of 731.9 m level is 8.7 m long and has a secti...
At first the application of cdma2000 1x system and the technology of the 3rd generation mobile communication is introduced. Then the structure of the cdma2000 1x reverse link which includes three parts (the part of reverse pilot, the part of reverse access procedures and the part of reverse traffic channel) is analysed, and the technical improvement of each part in the structure is also discussed.