Abstract
Ultra wideband radio over optical fiber (UROOF) technique enables the transmission of ultra wideband (UWB) radio signals over optical fibers by superimposing the UWB radio frequency signals of several gigahertz's on the optical continuous-wave carrier. UWB signals are characterized by an extremely large bandwidth. UWB frequency bands belong to 3.1-10.6 GHz according to the spectral mask defined by the Federal Communications Commission. This paper examines how by using multi-band orthogonal frequency division multiplexing (MB-OFDM) technique UWB transmission can be extended up to 60 GHz. MB-OFDM divides the spectrum into six band groups and 14 non-overlapping sub bands of 528 MHz bandwidth each. Each OFDM symbol is composed of 128 orthogonal subcarriers spaced 4.125 MHz apart.
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