Class information for:
Level 2: VISIBLE LIGHT COMMUNICATION//OPTICAL CODE DIVISION MULTIPLE ACCESS OCDMA//FREE SPACE OPTICAL COMMUNICATION

Basic class information
Class id #P Avg. number of
references		 Database coverage
of references
2090 5193 18.7 57%


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
5213 1                   OPTICAL CODE DIVISION MULTIPLE ACCESS OCDMA//OPTICAL CODE DIVISION MULTIPLE ACCESS//OPTICAL ORTHOGONAL CODE 1655
6876 1                   FREE SPACE OPTICAL COMMUNICATION//ATMOSPHERIC TURBULENCE//FREE SPACE OPTICS 1433
7673 1                   VISIBLE LIGHT COMMUNICATION//VISIBLE LIGHT COMMUNICATION VLC//OPTICAL WIRELESS COMMUNICATION 1341
21931 1                   RETROREFLECTOR//CAT EYE EFFECT//LASER LONG PATH ABSORPTION METHOD 400
22921 1                   POISSON CHANNEL//ULTRAVIOLET COMMUNICATION//DIRECT DETECTION PHOTON CHANNEL 364

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 VISIBLE LIGHT COMMUNICATION authKW 1369377 5% 87% 267
2 OPTICAL CODE DIVISION MULTIPLE ACCESS OCDMA authKW 1195363 4% 92% 220
3 FREE SPACE OPTICAL COMMUNICATION authKW 722445 3% 70% 176
4 OPTICAL WIRELESS COMMUNICATION authKW 669520 3% 84% 135
5 VISIBLE LIGHT COMMUNICATION VLC authKW 647390 2% 97% 114
6 OPTICAL CODE DIVISION MULTIPLE ACCESS authKW 599460 2% 91% 112
7 OPTICAL ORTHOGONAL CODE authKW 544262 2% 93% 100
8 OPTICAL CDMA authKW 536959 2% 94% 97
9 FREE SPACE OPTICS authKW 400875 2% 63% 108
10 ATMOSPHERIC TURBULENCE authKW 348887 4% 30% 198

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 100681 57% 1% 2984
2 Telecommunications 95525 36% 1% 1869
3 Engineering, Electrical & Electronic 40626 52% 0% 2681
4 Computer Science, Information Systems 4502 8% 0% 424
5 Computer Science, Hardware & Architecture 2427 4% 0% 214
6 Physics, Applied 967 12% 0% 608
7 Engineering, Aerospace 130 1% 0% 51
8 Transportation Science & Technology 65 1% 0% 31
9 Instruments & Instrumentation 26 2% 0% 84
10 COMPUTER APPLICATIONS & CYBERNETICS 15 0% 0% 3

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 SATELLITE WIRELESS COMMUN 146935 1% 71% 35
2 OPT COMMUN GRP 119306 2% 24% 86
3 LI FI RD 76416 0% 100% 13
4 NCR 63206 0% 51% 21
5 ULTRAFAST PHOTON NETWORK GRP 47222 0% 54% 15
6 ELECT COMP TELECOMMUN CONTROL 46079 0% 39% 20
7 ONRL 45145 0% 59% 13
8 BROADBAND COMMUN 42417 0% 38% 19
9 COMMUN SCI ENGN 37194 1% 17% 37
10 WIRELESS OPT COMMUN 36602 0% 35% 18

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 LIGHTWAVE TECHNOLOGY 100060 9% 4% 452
2 JOURNAL OF OPTICAL COMMUNICATIONS AND NETWORKING 81314 2% 12% 118
3 IET OPTOELECTRONICS 70122 1% 18% 68
4 IEEE TRANSACTIONS ON COMMUNICATIONS 50502 6% 3% 288
5 IEEE PHOTONICS TECHNOLOGY LETTERS 38509 6% 2% 327
6 IEEE PHOTONICS JOURNAL 32545 2% 5% 106
7 OPTICAL ENGINEERING 30423 5% 2% 269
8 IEE PROCEEDINGS-OPTOELECTRONICS 22213 1% 7% 56
9 JOURNAL OF OPTICAL NETWORKING 16802 1% 9% 32
10 IET COMMUNICATIONS 11778 1% 3% 73

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 VISIBLE LIGHT COMMUNICATION 1369377 5% 87% 267 Search VISIBLE+LIGHT+COMMUNICATION Search VISIBLE+LIGHT+COMMUNICATION
2 OPTICAL CODE DIVISION MULTIPLE ACCESS OCDMA 1195363 4% 92% 220 Search OPTICAL+CODE+DIVISION+MULTIPLE+ACCESS+OCDMA Search OPTICAL+CODE+DIVISION+MULTIPLE+ACCESS+OCDMA
3 FREE SPACE OPTICAL COMMUNICATION 722445 3% 70% 176 Search FREE+SPACE+OPTICAL+COMMUNICATION Search FREE+SPACE+OPTICAL+COMMUNICATION
4 OPTICAL WIRELESS COMMUNICATION 669520 3% 84% 135 Search OPTICAL+WIRELESS+COMMUNICATION Search OPTICAL+WIRELESS+COMMUNICATION
5 VISIBLE LIGHT COMMUNICATION VLC 647390 2% 97% 114 Search VISIBLE+LIGHT+COMMUNICATION+VLC Search VISIBLE+LIGHT+COMMUNICATION+VLC
6 OPTICAL CODE DIVISION MULTIPLE ACCESS 599460 2% 91% 112 Search OPTICAL+CODE+DIVISION+MULTIPLE+ACCESS Search OPTICAL+CODE+DIVISION+MULTIPLE+ACCESS
7 OPTICAL ORTHOGONAL CODE 544262 2% 93% 100 Search OPTICAL+ORTHOGONAL+CODE Search OPTICAL+ORTHOGONAL+CODE
8 OPTICAL CDMA 536959 2% 94% 97 Search OPTICAL+CDMA Search OPTICAL+CDMA
9 FREE SPACE OPTICS 400875 2% 63% 108 Search FREE+SPACE+OPTICS Search FREE+SPACE+OPTICS
10 ATMOSPHERIC TURBULENCE 348887 4% 30% 198 Search ATMOSPHERIC+TURBULENCE Search ATMOSPHERIC+TURBULENCE

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 205 75% 117
2 BORAH, DK , BOUCOUVALAS, AC , DAVIS, CC , HRANILOVIC, S , YIANNOPOULOS, K , (2012) A REVIEW OF COMMUNICATION-ORIENTED OPTICAL WIRELESS SYSTEMS.EURASIP JOURNAL ON WIRELESS COMMUNICATIONS AND NETWORKING. VOL. . ISSUE . P. 1 -28 117 81% 56
3 KARUNATILAKA, D , ZAFAR, F , KALAVALLY, V , PARTHIBAN, R , (2015) LED BASED INDOOR VISIBLE LIGHT COMMUNICATIONS: STATE OF THE ART.IEEE COMMUNICATIONS SURVEYS AND TUTORIALS. VOL. 17. ISSUE 3. P. 1649 -1678 92 74% 25
4 DAWSON, MD , RAJBHANDARI, S , MCKENDRY, JJD , HERRNSDORF, J , CHUN, H , FAULKNER, G , HAAS, H , WATSON, IM , O'BRIEN, D , (2017) A REVIEW OF GALLIUM NITRIDE LEDS FOR MULTIGIGABIT-PER-SECOND VISIBLE LIGHT DATA COMMUNICATIONS.SEMICONDUCTOR SCIENCE AND TECHNOLOGY. VOL. 32. ISSUE 2. P. - 125 64% 0
5 SALEHI, JA , (2007) EMERGING OCDMA COMMUNICATION SYSTEMS AND DATA NETWORKS [INVITED].JOURNAL OF OPTICAL NETWORKING. VOL. 6. ISSUE 9. P. 1138 -1178 99 89% 40
6 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
7 PATHAK, PH , FENG, XT , HU, PF , MOHAPATRA, P , (2015) VISIBLE LIGHT COMMUNICATION, NETWORKING, AND SENSING: A SURVEY, POTENTIAL AND CHALLENGES.IEEE COMMUNICATIONS SURVEYS AND TUTORIALS. VOL. 17. ISSUE 4. P. 2047 -2077 45 92% 26
8 WANG, XM , CHANG, YX , FENG, T , (2013) OPTIMAL 2-D (N X M, 3, 2, 1)-OPTICAL ORTHOGONAL CODES.IEEE TRANSACTIONS ON INFORMATION THEORY. VOL. 59. ISSUE 1. P. 710-725 52 100% 4
9 OMRANI, R , GARG, G , KUMAR, PV , ELIA, P , BHAMBHANI, P , (2012) LARGE FAMILIES OF ASYMPTOTICALLY OPTIMAL TWO-DIMENSIONAL OPTICAL ORTHOGONAL CODES.IEEE TRANSACTIONS ON INFORMATION THEORY. VOL. 58. ISSUE 2. P. 1163 -1185 52 88% 14
10 FENG, T , CHANG, YX , (2011) COMBINATORIAL CONSTRUCTIONS FOR OPTIMAL TWO-DIMENSIONAL OPTICAL ORTHOGONAL CODES WITH LAMBDA=2.IEEE TRANSACTIONS ON INFORMATION THEORY. VOL. 57. ISSUE 10. P. 6796-6819 49 91% 8

Classes with closest relation at Level 2


Rank Class id link
1 110 IEEE PHOTONICS TECHNOLOGY LETTERS//JOURNAL OF LIGHTWAVE TECHNOLOGY//OPTICAL FIBER COMMUNICATION
2 2454 LIDAR//RAMAN LIDAR//LIDAR RATIO
3 1317 MICROWAVE PHOTONICS//RADIO OVER FIBER//RADIO OVER FIBER ROF
4 665 LASER PHYS CHEM//OPTICS//OPTICAL VORTEX
5 1405 SITE TESTING//ATMOSPHERIC EFFECTS//INSTRUMENTATION ADAPTIVE OPTICS
6 3482 BLUETOOTH//FREQUENCY HOPPING//SCATTERNET
7 2096 JOURNAL OF COMBINATORIAL DESIGNS//ARS COMBINATORIA//DISCRETE MATHEMATICS
8 2567 LINEAR COMPLEXITY//PERMUTATION POLYNOMIAL//FINITE FIELDS AND THEIR APPLICATIONS
9 3228 CODE ACQUISITION//FRAME SYNCHRONIZATION//UNAMBIGUOUS TRACKING
10 16 TELECOMMUNICATIONS//IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS//COGNITIVE RADIO

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