Class information for:
Level 1: FREE SPACE OPTICAL COMMUNICATION//ATMOSPHERIC TURBULENCE//FREE SPACE OPTICS

Basic class information
Class id #P Avg. number of
references		 Database coverage
of references
6876 1433 21.7 52%


Bar chart of Publication_year

Last years might be incomplete

Hierarchy of classes
The table includes all classes above and classes immediately below the current class.


Cluster id Level Cluster label #P
10 4 OPTICS//PHYSICS, PARTICLES & FIELDS//PHYSICS, MULTIDISCIPLINARY 1131262
185 3       IEEE PHOTONICS TECHNOLOGY LETTERS//OPTICS//JOURNAL OF LIGHTWAVE TECHNOLOGY 56126
2090 2             VISIBLE LIGHT COMMUNICATION//OPTICAL CODE DIVISION MULTIPLE ACCESS OCDMA//FREE SPACE OPTICAL COMMUNICATION 5193
6876 1                   FREE SPACE OPTICAL COMMUNICATION//ATMOSPHERIC TURBULENCE//FREE SPACE OPTICS 1433

Terms with highest relevance score


rank Term termType Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 FREE SPACE OPTICAL COMMUNICATION authKW 1518084 9% 53% 134
2 ATMOSPHERIC TURBULENCE authKW 1202250 13% 29% 193
3 FREE SPACE OPTICS authKW 1148252 7% 56% 96
4 POINTING ERRORS authKW 1026716 4% 75% 64
5 FREE SPACE OPTICS FSO authKW 819724 3% 84% 46
6 GAMMA GAMMA DISTRIBUTION authKW 757574 3% 89% 40
7 FREE SPACE OPTICAL FSO COMMUNICATION authKW 606989 2% 81% 35
8 GAMMA GAMMA FADING authKW 468754 2% 100% 22
9 FSO authKW 365674 2% 59% 29
10 APERTURE AVERAGING authKW 307881 1% 85% 17

Web of Science journal categories


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 Optics 37668 67% 0% 955
2 Telecommunications 20965 32% 0% 461
3 Engineering, Electrical & Electronic 5610 37% 0% 536
4 Computer Science, Hardware & Architecture 797 4% 0% 64
5 Computer Science, Information Systems 786 7% 0% 95
6 Engineering, Aerospace 414 3% 0% 40
7 Physics, Applied 104 9% 0% 124
8 Transportation Science & Technology 3 0% 0% 5
9 Physics, Multidisciplinary 1 2% 0% 33
10 Spectroscopy 0 1% 0% 11

Address terms


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 ELECT COMP TELECOMMUN CONTROL 167090 1% 39% 20
2 BROADBAND COMMUN 153813 1% 38% 19
3 SATELLITE WIRELESS COMMUN 140864 1% 37% 18
4 TUNABLE LASER TECHNOL 115630 4% 8% 64
5 MATH ANAL STAT OPERAT PL MATH 85228 0% 100% 4
6 OPT COMMUN GRP 71643 2% 10% 35
7 FREQUENCY ENGN 69595 0% 47% 7
8 BATTLE SYST NAVAL OPERAT SEA STUDIES NAV ELE 63921 0% 100% 3
9 FREE SPACE OPT COMMUN TECHNOL 63921 0% 100% 3
10 GITS GITI 59182 0% 56% 5

Journals


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 JOURNAL OF OPTICAL COMMUNICATIONS AND NETWORKING 64093 4% 5% 55
2 IET OPTOELECTRONICS 26606 2% 6% 22
3 APPLIED OPTICS 14176 11% 0% 153
4 OPTICAL ENGINEERING 14097 7% 1% 96
5 JOURNAL OF LIGHTWAVE TECHNOLOGY 13693 6% 1% 88
6 RADIOENGINEERING 11046 2% 2% 26
7 IEEE PHOTONICS JOURNAL 8827 2% 1% 29
8 OPTIK 8690 5% 1% 66
9 IEEE TRANSACTIONS ON COMMUNICATIONS 8455 4% 1% 62
10 IET COMMUNICATIONS 7730 2% 1% 31

Author Key Words


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class		 LCSH search Wikipedia search
1 FREE SPACE OPTICAL COMMUNICATION 1518084 9% 53% 134 Search FREE+SPACE+OPTICAL+COMMUNICATION Search FREE+SPACE+OPTICAL+COMMUNICATION
2 ATMOSPHERIC TURBULENCE 1202250 13% 29% 193 Search ATMOSPHERIC+TURBULENCE Search ATMOSPHERIC+TURBULENCE
3 FREE SPACE OPTICS 1148252 7% 56% 96 Search FREE+SPACE+OPTICS Search FREE+SPACE+OPTICS
4 POINTING ERRORS 1026716 4% 75% 64 Search POINTING+ERRORS Search POINTING+ERRORS
5 FREE SPACE OPTICS FSO 819724 3% 84% 46 Search FREE+SPACE+OPTICS+FSO Search FREE+SPACE+OPTICS+FSO
6 GAMMA GAMMA DISTRIBUTION 757574 3% 89% 40 Search GAMMA+GAMMA+DISTRIBUTION Search GAMMA+GAMMA+DISTRIBUTION
7 FREE SPACE OPTICAL FSO COMMUNICATION 606989 2% 81% 35 Search FREE+SPACE+OPTICAL+FSO+COMMUNICATION Search FREE+SPACE+OPTICAL+FSO+COMMUNICATION
8 GAMMA GAMMA FADING 468754 2% 100% 22 Search GAMMA+GAMMA+FADING Search GAMMA+GAMMA+FADING
9 FSO 365674 2% 59% 29 Search FSO Search FSO
10 APERTURE AVERAGING 307881 1% 85% 17 Search APERTURE+AVERAGING Search APERTURE+AVERAGING

Core articles
The table includes core articles in the class. The following variables is taken into account for the relevance score of an article in a cluster c:
(1) Number of references referring to publications in the class.
(2) Share of total number of active references referring to publications in the class.
(3) Age of the article. New articles get higher score than old articles.
(4) Citation rate, normalized to year.


Rank Reference # ref. in
cl.		 Shr. of ref. in
cl.		 Citations
1 KHALIGHI, MA , UYSAL, M , (2014) SURVEY ON FREE SPACE OPTICAL COMMUNICATION: A COMMUNICATION THEORY PERSPECTIVE.IEEE COMMUNICATIONS SURVEYS AND TUTORIALS. VOL. 16. ISSUE 4. P. 2231 -2258 173 63% 117
2 ANSARI, IS , YILMAZ, F , ALOUINI, MS , (2016) PERFORMANCE ANALYSIS OF FREE-SPACE OPTICAL LINKS OVER MALAGA (M) TURBULENCE CHANNELS WITH POINTING ERRORS.IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS. VOL. 15. ISSUE 1. P. 91 -102 33 94% 15
3 BOLUDA-RUIZ, R , GARCIA-ZAMBRANA, A , CASTILLO-VAZQUEZ, B , CASTILLO-VAZQUEZ, C , (2016) IMPACT OF NONZERO BORESIGHT POINTING ERROR ON ERGODIC CAPACITY OF MIMO FSO COMMUNICATION SYSTEMS.OPTICS EXPRESS. VOL. 24. ISSUE 4. P. 3513 -3534 40 98% 0
4 WANG, P , CAO, T , GUO, LX , WANG, RR , YANG, YT , (2015) PERFORMANCE ANALYSIS OF MULTIHOP PARALLEL FREE-SPACE OPTICAL SYSTEMS OVER EXPONENTIATED WEIBULL FADING CHANNELS.IEEE PHOTONICS JOURNAL. VOL. 7. ISSUE 1. P. - 32 94% 5
5 WANG, P , LIU, XX , CAO, T , FU, HH , WANG, RR , GUO, LX , (2016) IMPACT OF NONZERO BORESIGHT POINTING ERRORS ON THE PERFORMANCE OF A RELAY-ASSISTED FREE-SPACE OPTICAL COMMUNICATION SYSTEM OVER EXPONENTIATED WEIBULL FADING CHANNELS.APPLIED OPTICS. VOL. 55. ISSUE 27. P. 7593 -7603 32 97% 0
6 GUO, LX , CAO, T , WANG, RR , YANG, YT , WANG, P , ZHANG, J , (2015) PERFORMANCE ANALYSIS FOR RELAY-AIDED MULTIHOP BPPM FSO COMMUNICATION SYSTEM OVER EXPONENTIATED WEIBULL FADING CHANNELS WITH POINTING ERROR IMPAIRMENTS.IEEE PHOTONICS JOURNAL. VOL. 7. ISSUE 4. P. - 34 92% 0
7 YANG, F , CHENG, JL , TSIFTSIS, TA , (2014) FREE-SPACE OPTICAL COMMUNICATION WITH NONZERO BORESIGHT POINTING ERRORS.IEEE TRANSACTIONS ON COMMUNICATIONS. VOL. 62. ISSUE 2. P. 713 -725 24 92% 35
8 KAUR, P , JAIN, VK , KAR, S , (2016) PERFORMANCE OF FREE SPACE OPTICAL LINKS IN PRESENCE OF TURBULENCE, POINTING ERRORS AND ADVERSE WEATHER CONDITIONS.OPTICAL AND QUANTUM ELECTRONICS. VOL. 48. ISSUE 1. P. - 27 93% 1
9 BOLUDA-RUIZ, R , GARCIA-ZAMBRANA, A , CASTILLO-VAZQUEZ, B , CASTILLO-VAZQUEZ, C , (2015) ERGODIC CAPACITY ANALYSIS FOR DF STRATEGIES IN COOPERATIVE FSO SYSTEMS.OPTICS EXPRESS. VOL. 23. ISSUE 17. P. 21565 -21584 29 94% 1
10 FENG, JF , ZHAO, XH , (2016) PERFORMANCE ANALYSIS OF MIXED RF/FSO SYSTEMS WITH STBC USERS.OPTICS COMMUNICATIONS. VOL. 381. ISSUE . P. 244 -252 28 97% 0

Classes with closest relation at Level 1


Rank Class id link
1 22921 POISSON CHANNEL//ULTRAVIOLET COMMUNICATION//DIRECT DETECTION PHOTON CHANNEL
2 25614 LARGE APERTURE SCINTILLOMETER//SCINTILLOMETER//METEOROL AIR QUAL GRP
3 7673 VISIBLE LIGHT COMMUNICATION//VISIBLE LIGHT COMMUNICATION VLC//OPTICAL WIRELESS COMMUNICATION
4 23754 CONTRAST TRANSMISSION//106 MU M PULSE LASER//2000 HOGBACK RD SUITE 3
5 2121 LASER PHYS CHEM//TURBULENT ATMOSPHERE//NON KOLMOGOROV TURBULENCE
6 21931 RETROREFLECTOR//CAT EYE EFFECT//LASER LONG PATH ABSORPTION METHOD
7 5300 ADAPTIVE OPTICS//AD T OPT//SHACK HARTMANN WAVEFRONT SENSOR
8 4275 FADING CHANNELS//NAKAGAMI FADING//MAXIMAL RATIO COMBINING MRC
9 34397 REFLECTIVE TOMOGRAPHY//SYNTHETIC APERTURE IMAGING LADAR//SPACE LASER COMMUN DETECT TECHNOL
10 12108 SITE TESTING//ATMOSPHERIC EFFECTS//SEEING

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