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| Content Provider | IEEE Xplore Digital Library | 
|---|---|
| Author | Barua, B. Barua, D. | 
| Copyright Year | 2011 | 
| Description | Author affiliation: Institute of ICT, Bangladesh University of Engineering and Technology, Dhaka, Bangladesh (Barua, D.) || Department of EEE, Ahsanullah University of Science and Technology, Dhaka, Bangladesh (Barua, B.) | 
| Abstract | Free Space Optical (FSO) Communications are able to deliver us to an age of unprecedented bandwidth, low signal attenuation, small space requirements and ultimately low cost. In FSO communications the influence of atmospheric effects can be specified by the attenuation and fluctuations of the transmitted optical power, caused by the atmospheric turbulence. This paper investigate the performance of FSO communication systems employing on-off keying (OOK), subcarrier binary phase-shift keying (BPSK) modulation and Q-ary pulse position modulation (QPPM) in turbulence regime. The performance results are evaluated in terms of bit error rate (BER) employing subcarrier OOK, BPSK, and QPPM as modulation technique. It is found that the BER performance under BPSK modulation is better compared to other modulation techniques but in Q-ary PPM if we increase the order of Q then the performance will improve and it provide maximum 4dB improvement. | 
| Starting Page | 191 | 
| Ending Page | 195 | 
| File Size | 1112112 | 
| Page Count | 5 | 
| File Format | |
| ISBN | 9781612849072 | 
| e-ISBN | 9781612849089 | 
| DOI | 10.1109/ICCITechn.2011.6164782 | 
| Language | English | 
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) | 
| Publisher Date | 2011-12-22 | 
| Publisher Place | Bangladesh | 
| Access Restriction | Subscribed | 
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) | 
| Subject Keyword | Freespace optics (FSO) Optimized production technology on-off keying (OOK) gamma-gamma distribution Optics Binary phase-shift keying (BPSK) Optical receivers Optical transmitters Q-ary pulse position modulation (QPPM) Demodulation | 
| Content Type | Text | 
| Resource Type | Article | 
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