Performance enhancement of Dicode Pulse Position Modulation System by means of LDPC code

Hussein, Yasmeen M. and Al-Nedawe, Basman M. and Mutlag, Ammar Hussein (2022) Performance enhancement of Dicode Pulse Position Modulation System by means of LDPC code. In: IMDC-IST 2021, 7-9 September 2021, Sakarya, Turkey.

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Several types of Pulse Position Modulation (PPM) formats were proposed as coding schemes for optical communication such as Differential Pulse Position Modulation (DPPM) and Multiple Pulse Position Modulation (MPPM). However, these coding schemes result in a large bandwidth expansion factor that deduces an excessively high final data rate. On the other hand, Dicode Pulse Position Modulation (DiPPM) is an unconventional coding scheme that has superior characteristics beyond the PPMs proposed. More specifically, DiPPM has been developed to resolve the bandwidth consumption issue of PPM formats. For the first time, this study intends to overcome the DiPPM errors issue via the implication of forwarding Error Correction (FEC). In this regard, low-density parity-check (LDPC) is used in conjunction with multi-level coding, multi-stage encoding, and trellis-based signal shaping to create a bandwidth-efficient modulation format. The optimum code rates for different fibre normalised bandwidths of maximum transmission efficacy will be investigated.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: dicode pulse position modulation (dippm); forward error correction (fec) code; low-density parity-check (ldpc); log-likelihood ratio (llr); bandwidth consumption issue
Subjects: T Technology > T Technology (General)
Depositing User: EAI Editor IV
Date Deposited: 29 Apr 2022 12:55
Last Modified: 29 Apr 2022 12:55

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