Convolutional coded dual header pulse interval modulation for line of sight photonic wireless links.

Zabih Ghassemlooy, Sujan Rajbhandari

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

The analysis and simulation for convolutional coded dual header pulse interval modulation (CC-DH-PIM) scheme using a rate ½ convolutional code with the constraint length of 3 is presented. Decoding is implemented using the Viterbi algorithm with a hard decision. Mathematical analysis for the slot error rate (SER) upper bounds is presented and results are compared with the simulated data for a number of different modulation techniques. The authors show that the coded DH-PIM outperforms the pulse position modulation (PPM) scheme and offers >4 dB code gain at the SER of 10?4 compared to the standard DH-PIM. Results presented show that the CC-DH-PIM with a higher constraint length of 7 offers a code gain of 2 dB at SER of 10?5 compared to the CC-DH-PIM with a constraint length of 3. However, in CC-DH-PIM the improvement in the error performance is achieved at the cost of reduced transmission throughput compared to the standard DH-PIM.
Original languageEnglish
Pages (from-to)142-148
JournalIET Optoelectronics
Volume3
Issue number3
DOIs
Publication statusPublished - Jun 2009

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