Abstract
Free-space optical links are vulnerable to atmospheric fading and pointing errors. When a laser beam wanders, most previous works model the random radial displacement distance of the pointing error as a Rayleigh distributed random variable. However, for a non-ideally fast-tracked laser beam, the radial displacement distance at the receiver aperture may not obey the Rayleigh distribution, since the displacements in vertical and horizontal directions may not always follow a zero-mean Gaussian distribution. In this paper, we generalize a widely used pointing error model by assuming that the radial displacement distance follows a Rician distribution and derive a closed-form probability density function (PDF) of the generalized pointing error model. Furthermore, we derive closed-form PDFs for the composite lognormal and Gamma-Gamma turbulence channels using this generalized pointing error model. Error rate performance is also studied for an on-off keying signaling system with intensity modulation and direct detection in the presence of this generalized pointing error.
| Original language | English |
|---|---|
| Title of host publication | IEEE International Conference on Communications |
| Publisher | Institute of Electrical and Electronics Engineers Inc. |
| Pages | 3943-3947 |
| Number of pages | 5 |
| ISBN (Print) | 9781467331227 |
| DOIs | |
| Publication status | Published - 2013 |
| Externally published | Yes |
| Event | 2013 IEEE International Conference on Communications, ICC 2013 - Budapest, Hungary Duration: Jun 9 2013 → Jun 13 2013 |
Other
| Other | 2013 IEEE International Conference on Communications, ICC 2013 |
|---|---|
| Country | Hungary |
| City | Budapest |
| Period | 6/9/13 → 6/13/13 |
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ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Computer Networks and Communications
Cite this
Free-space optical communications with generalized pointing errors. / Yang, Fan; Cheng, Julian; Tsiftsis, Theodoras A.
IEEE International Conference on Communications. Institute of Electrical and Electronics Engineers Inc., 2013. p. 3943-3947 6655174.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Free-space optical communications with generalized pointing errors
AU - Yang, Fan
AU - Cheng, Julian
AU - Tsiftsis, Theodoras A.
PY - 2013
Y1 - 2013
N2 - Free-space optical links are vulnerable to atmospheric fading and pointing errors. When a laser beam wanders, most previous works model the random radial displacement distance of the pointing error as a Rayleigh distributed random variable. However, for a non-ideally fast-tracked laser beam, the radial displacement distance at the receiver aperture may not obey the Rayleigh distribution, since the displacements in vertical and horizontal directions may not always follow a zero-mean Gaussian distribution. In this paper, we generalize a widely used pointing error model by assuming that the radial displacement distance follows a Rician distribution and derive a closed-form probability density function (PDF) of the generalized pointing error model. Furthermore, we derive closed-form PDFs for the composite lognormal and Gamma-Gamma turbulence channels using this generalized pointing error model. Error rate performance is also studied for an on-off keying signaling system with intensity modulation and direct detection in the presence of this generalized pointing error.
AB - Free-space optical links are vulnerable to atmospheric fading and pointing errors. When a laser beam wanders, most previous works model the random radial displacement distance of the pointing error as a Rayleigh distributed random variable. However, for a non-ideally fast-tracked laser beam, the radial displacement distance at the receiver aperture may not obey the Rayleigh distribution, since the displacements in vertical and horizontal directions may not always follow a zero-mean Gaussian distribution. In this paper, we generalize a widely used pointing error model by assuming that the radial displacement distance follows a Rician distribution and derive a closed-form probability density function (PDF) of the generalized pointing error model. Furthermore, we derive closed-form PDFs for the composite lognormal and Gamma-Gamma turbulence channels using this generalized pointing error model. Error rate performance is also studied for an on-off keying signaling system with intensity modulation and direct detection in the presence of this generalized pointing error.
UR - http://www.scopus.com/inward/record.url?scp=84891353691&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84891353691&partnerID=8YFLogxK
U2 - 10.1109/ICC.2013.6655174
DO - 10.1109/ICC.2013.6655174
M3 - Conference contribution
SN - 9781467331227
SP - 3943
EP - 3947
BT - IEEE International Conference on Communications
PB - Institute of Electrical and Electronics Engineers Inc.
ER -