Science Explorer Interactive view Map
Topic · Electrical and Electronic Engineering

graph theory and CDMA systems

graph theory and CDMA systems is a research topic within Electrical and Electronic Engineering. Science Explorer counts 34k research works in it since 1950. 10.6% of them reached the world's top 10% most cited for their field and year.

This cluster of papers focuses on the research and development of Optical Code Division Multiple Access (CDMA) systems, particularly emphasizing topics such as Fiber Bragg Grating, Spectral Amplitude Coding, Security Performance against eavesdropping, Coherent and Incoherent Systems, Rank Modulation for Flash Memories, Latin Squares, Photonic Routers, Error Correction techniques, Orthogonal Codes, and Wavelength-Time Codes.

  • Fiber Bragg Grating
  • Spectral Amplitude Coding
  • Security Performance
  • Coherent and Incoherent Systems
  • Rank Modulation
  • Latin Squares
  • Photonic Routers
  • Error Correction
  • Orthogonal Codes
  • Wavelength-Time Codes
Research works
34k
fractional, since 1950
In the world top 10%
3.6k
per year above
Top-10% rate
10.6%
share of its works in the world top 10%
Growth, 2013–17 → 2018–22
-5%
the tick is no change

Which countries lead graph theory and CDMA systems research?

By volume, China and the United States publish the most (863 and 423 works in 2022–2025).

By volume, 2022–2025

  1. 1 China 863 works
  2. 2 United States 423 works
  3. 3 India 420 works
  4. 4 Russia 145 works
  5. 5 Japan 120 works
  6. 6 France 117 works
  7. 7 Germany 111 works
  8. 8 Italy 108 works
  9. 9 United Kingdom 98 works
  10. 10 Canada 91 works

How concentrated that is

The same countries as shares of everything the list above accounts for. A node where two countries do two thirds of the work and one spread evenly across twelve read alike as a ranking and not at all alike here.

China: 34.6%United States: 17.0%India: 16.8%Russia: 5.8%6 others listed: 25.9%35%largest
China863 · 34.6%United States423 · 17.0%India420 · 16.8%Russia145 · 5.8%6 others listed646 · 25.9%

Shares of the rows listed above, not of the whole node.

Which institutions lead graph theory and CDMA systems research?

By volume in 2022–2025, Sobolev Institute of Mathematics publishes the most graph theory and CDMA systems research, followed by Hefei University of Technology and Centre National de la Recherche Scientifique.

By volume, 2022–2025

  1. 1 Sobolev Institute of MathematicsRussia 19 works
  2. 2 Hefei University of TechnologyChina 19 works
  3. 3 Centre National de la Recherche ScientifiqueFrance 17 works
  4. 4 Beijing Jiaotong UniversityChina 17 works
  5. 5 Lomonosov Moscow State UniversityRussia 16 works
  6. 6 Vellore Institute of Technology UniversityIndia 14 works
  7. 7 University of WaterlooCanada 14 works
  8. 8 Beijing University of Posts and TelecommunicationsChina 14 works
  9. 9 Nankai UniversityChina 14 works
  10. 10 Southwest Jiaotong UniversityChina 13 works

Who are the leading researchers in graph theory and CDMA systems?

The most-cited researchers publishing on graph theory and CDMA systems include H. Vincent Poor, Mohamed‐Slim Alouini and Mérouane Debbah.

  1. 1 H. Vincent Poor United States 9.5k citations
  2. 2 Mohamed‐Slim Alouini Saudi Arabia 5.9k citations
  3. 3 Mérouane Debbah France 4.3k citations
  4. 4 Donald E. Knuth United States 4k citations

Ranked by citations received across their whole record, among researchers with at least three works on this topic.

Where is graph theory and CDMA systems research done?

The largest centres of graph theory and CDMA systems research in 2022–2025 are Beijing (China), Nanjing (China), Moscow (Russia) and Chennai (India).

Largest cities, 2022–2025

  1. 1 Beijing China 119 works
  2. 2 Nanjing China 60 works
  3. 3 Moscow Russia 59 works
  4. 4 Chennai India 46 works
  5. 5 Chengdu China 46 works
  6. 6 Xi'an China 44 works
  7. 7 Guangzhou China 44 works
  8. 8 Shanghai China 44 works
  9. 9 Hefei China 44 works
  10. 10 Tokyo Japan 39 works
See graph theory and CDMA systems on the map

Where is the best place to study graph theory and CDMA systems?

Among universities, judged by research, University of Primorska, Hubei University and Tohoku University score highest, combining excellence, specialisation, size, growth and international reach. Research strength is one signal when choosing where to study; it does not measure teaching.

0%10%20%mean 10.03%fractional works in this node (log) →share in the world top 10% →University of Primorska: 13, 13.3%Hubei University: 11, 9.8%Tohoku University: 10, 15.7%Anhui University: 10, 15.3%Hefei University of Technology: 19, 3.5%Eötvös Loránd University: 9, 9.9%Henan Normal University: 8, 6.3%University of Rijeka: 12, 0.0%Universitat de València: 9, 16.7%Hebei Normal University: 9, 9.8%Tohoku UniversityAnhui UniversityUniversity of Primor…Hubei University
above the meannear itbelow it

One dot per university in the table below. The upper left is the interesting corner: small places doing unusually strong work.

#UniversityScoreTop 10%SpecialisationWorksGrowth
1 University of PrimorskaSlovenia 69.013.3%59.9×13 +22.0%
2 Hubei UniversityChina 58.29.8%15.3×11 +40.3%
3 Tohoku UniversityJapan 57.615.7%4.4×10 +122.4%
4 Anhui UniversityChina 56.315.3%5.6×10 +123.9%
5 Hefei University of TechnologyChina 51.93.5%9.0×19 -14.4%
6 Eötvös Loránd UniversityHungary 51.29.9%9.1×9 +7.8%
7 Henan Normal UniversityChina 49.46.3%11.3×8 +121.6%
8 University of RijekaCroatia 49.00.0%23.4×12 +139.4%
9 Universitat de ValènciaSpain 48.316.7%4.5×9 +2.0%
10 Hebei Normal UniversityChina 47.99.8%23.7×9 -50.6%

Universities only. Score blends excellence (30%), specialisation (25%), size (20%), growth (15%) and international reach (10%), 2015–2022; growth compares 2010–14 with 2015–19.

Is graph theory and CDMA systems research growing?

Output in 2018–2022 was 5% lower than in 2013–2017, peaking in 2011.

19801990200020102020
grewheldshrank

The same series as a ribbon — one cell per year, darker for more. The line above answers how much; this answers when.

Which topics inside it are moving

Growth and decline on one axis around a shared zero. Two lists side by side hide the thing that matters: whether the growth dwarfs the decline, or the other way round.