Agilent Technologies E4438C Guide de l'utilisateur télécharger pdf (Page 13)

User’s Guide 5

E4438C Option H13 Signal Studio for WiMAX

About WiMAX

The TTG (transmit/receive transition gap) and RTG (receive/transmit transition gap) are

inserted at the end of each subframe and the end of each frame to allow the base station to

change from transmit to receive mode.

For frequency division duplex (FDD) mode, the downlink and uplink signals are

transmitted simultaneously at different frequencies. Downlink and uplink frames are

transmitted continuously in time and the structures of the downlink frames and uplink

frames are basically the same as described for the corresponding TDD subframes.

Please refer to the IEEE 802.16-2004 standard for more details about the frame structure

and parameters.

Figure 1 Frame Structure for TDD Signal

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 ... 53 54

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Agilent Technologies E4438C Guide de l'utilisateur Page 13