Hybrid 2-PPM-BPSK-SIM with the spatial diversity for free space optical communications

Faridzadeh, M.; Ghassemlooy, Zabih; Rajbhandari, Sujan

doi:10.1109/csndsp.2012.6292705

Cited by 5 publications

(1 citation statement)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For L-ary pulse position modulation (LPPM), one data symbol is composed by L time slots, among which only one time slot is valid while the others are zero. Therefore, the average length of the symbol is L, the conditional BER for various PPM is [24] , [40][41][42].…”

Section: B Average Bit Error Ratementioning

confidence: 99%

Performance Improvement for Wireless Sensors Networks by Adopting Hybrid Subcarrier Intensity Modulation Over Exponentiated Weibull Turbulence Channels

Hao

Liu

et al. 2020

IEEE Access

View full text Add to dashboard Cite

We conduct a research on free space optical (FSO) communication system that is applied for transmission in wireless sensor networks (WSN), which is based on the hybrid pulse position modulationbinary phase shift keying-subcarrier intensity modulation (PPM-BPSK-SIM) undergoes novel Exponentiated Weibull fading channels. When battery-charged sensor transmission nodes with limited energy is transmitted, it is vital to study the performance of the transmission link. We have derived the exact joint probability function of the transmission link when the atmospheric turbulence and pointing errors are considering. On the basis of them, the unconditional average bit error rate (BER) for hybrid PPM-BPSK-SIM is derived, then the closed expression of the outage probability and the average channel capacity are also derived. Research results indicates that increasing the receiver aperture by aperture averaging effect can distinctly improve the performance of the link. Additionally, for any circumstances of atmospheric turbulence and pointing errors, by combining the utilization of hybrid PPM-BPSK-SIM modulation and symbol with average length greater than eight, the average BER performance can be conspicuously enhanced. The outage probability and average channel capacity of the FSO link are jointly affected by atmospheric turbulence and pointing error, and optimization strategies in different scenarios are given by our research.

show abstract

Section: B Average Bit Error Ratementioning

confidence: 99%