Multicarrier Modulation-Based Digital Radio-over-Fibre System Achieving Unequal Bit Protection with Over 10 dB SNR Gain

TL;DR

This paper presents a digital radio-over-fibre system using multicarrier modulation that provides unequal bit protection through optimized bit and power allocation, achieving significant SNR gains in different channel conditions.

Contribution

It introduces a novel multicarrier modulation scheme with unequal bit protection and demonstrates substantial theoretical and simulation-based SNR improvements.

Findings

Theoretical SNR gain of 16.1 dB in AWGN channels

Simulation shows 13.5 dB SNR gain in bandwidth-limited scenarios

Effective bit and power allocation enhances system performance

Abstract

We propose a multicarrier modulation-based digital radio-over-fibre system achieving unequal bit protection by bit and power allocation for subcarriers. A theoretical SNR gain of 16.1 dB is obtained in the AWGN channel and the simulation results show a 13.5 dB gain in the bandwidth-limited case.