Design and analysis of turbo-coded DCM-OFDM ultra-wideband system with radio-over-fiber and wireless transmission in underwater communication

摘要

The performance of radio-over-fiber (ROF) optical transmission and wireless transmission of ultra-wideband (UWB) system administrations is described when operating in the underwater communication. In order to increase the coverage and enhance channel efficiency, ROF system which employs subcarrier multiplexing (SCM) and dense wavelength-division multiplexing (DWDM) is used. DWDM provides efficient channel with tapered channel spacing, whereas SCM's unique commonality helps in achieving high mobility and large bitrates. The performance of dual-carrier modulation orthogonal frequency-division multiplexing is compared with other modulation techniques, and to indicate an exchange between bit error ration and throughput for the system, our work investigates the punctured turbo coding. For 6 dB Eb/No value, a maximum of 1120 Mbps throughput per band can be accomplished in comparison with 480 Mbps per band of the orthogonal frequency-division multiplexing UWB. To modulate and to develop code designs for a rational UWB-ROF and wireless system in underwater communication with VLC, the proposed study provides a reliable solution.