Subcarrier Grouping-Enabled Improvement in Transmission Performance of Subcarrier Index-Power Modulated Optical OFDM for IM/DD PON Systems
Autor: | Jianming Tang, Lin Chen, Fadi Halabi, Ali Hamie, Roger Philip Giddings |
---|---|
Rok vydání: | 2018 |
Předmět: |
Computer science
Orthogonal frequency-division multiplexing 02 engineering and technology Passive optical network Power budget Atomic and Molecular Physics and Optics Subcarrier 020210 optoelectronics & photonics Transmission (telecommunications) 0202 electrical engineering electronic engineering information engineering Electronic engineering Transceiver Error detection and correction Intensity modulation |
Zdroj: | Journal of Lightwave Technology. 36:4792-4798 |
ISSN: | 1558-2213 0733-8724 |
Popis: | As an improved variant of a previously published subcarrier index-power modulated optical orthogonal frequency division multiplexing (SIPM-OOFDM), a signal transmission technique termed SIPM-OOFDM with subcarrier grouping (SIPM-SG-OOFDM) is proposed and investigated for the first time. In SIPM-SG-OOFDM, each symbol is divided into multiple subcarrier groups, each of which is assigned with a specific power pattern according to an incoming data sequence. As such, in comparison with conventional OOFDM, extra information bits are conveyed without significantly compromising the transceiver complexity. In addition, subcarrier grouping also offers highly desired zero-overhead automatic error correction at the receiver. Detailed analysis and numerical simulations are undertaken to identify optimum SIPM-SG-OOFDM transceiver parameters and also to explore the corresponding maximum achievable transmission performances over passive optical network systems based on intensity modulation and direct-detection. It is shown that, compared to SIPM-OOFDM, SIPM-SG-OOFDM not only increases the signal transmission capacity by 11%, but also improves the system power budget by approximately 1.0 dB. |
Databáze: | OpenAIRE |
Externí odkaz: |