User's Manual

Powerwave Fiber Optics
VM100 56/EN – User’s Manual Rev. P1A9-Draft 2004-11 4 - 1
4. RF Over Fiber
This chapter describes the downlink RF modulated signal from the BTS to the repeater
antenna, and the other way around from the repeater antenna to the BTS. The description
is focused on the optical part of the RF transmission.
The chapter is divided into the following main parts:
• RF signal path overview for downlink and uplink signals, page 4-2.
• Detailed description of the downlink signal path, page 4-3.
• Detailed description of the uplink signal path, page 4-8.
• Brief description of the FOU, Fiber Optic Unit, page 4-10.
• Brief descriptions of noise, intermodulation, and dynamic signal range, page 4-11.
• Some examples of simplex transmission, page 4-12.
• Some examples of full-duplex transmission, page 4-13.