N. Ahmed

5.6k total citations · 1 hit paper
23 papers, 3.7k citations indexed

About

N. Ahmed is a scholar working on Signal Processing, Artificial Intelligence and Computer Vision and Pattern Recognition. According to data from OpenAlex, N. Ahmed has authored 23 papers receiving a total of 3.7k indexed citations (citations by other indexed papers that have themselves been cited), including 13 papers in Signal Processing, 7 papers in Artificial Intelligence and 5 papers in Computer Vision and Pattern Recognition. Recurrent topics in N. Ahmed's work include Digital Filter Design and Implementation (7 papers), Blind Source Separation Techniques (6 papers) and Advanced Adaptive Filtering Techniques (5 papers). N. Ahmed is often cited by papers focused on Digital Filter Design and Implementation (7 papers), Blind Source Separation Techniques (6 papers) and Advanced Adaptive Filtering Techniques (5 papers). N. Ahmed collaborates with scholars based in United States, Hungary and China. N. Ahmed's co-authors include K.R. Rao, T. Natarajan, S.D. Stearns, N. Magotra, Eric P. Chael, D. Hush, Rebecca Bates, Giridhar Mandyam, Yanxiong Li and Qianhua He and has published in prestigious journals such as IEEE Transactions on Automatic Control, Proceedings of the IEEE and Expert Systems with Applications.

In The Last Decade

N. Ahmed

21 papers receiving 3.4k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Discrete Cosine Transform

1974 3.3k citations N. Ahmed, T. Natarajan et al. IEEE Transactions on Computers profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
N. Ahmed United States	8	2.1k	1.5k	491	489	351	23	3.7k
T. Natarajan United States	6	2.1k 1.0×	1.4k 1.0×	406 0.8×	424 0.9×	318 0.9×	16	3.4k
Mladen Victor Wickerhauser United States	16	2.0k 1.0×	1.1k 0.8×	438 0.9×	349 0.7×	298 0.8×	58	4.0k
P. Yip Canada	19	1.2k 0.6×	1.3k 0.9×	401 0.8×	367 0.8×	187 0.5×	50	2.6k
John W. Woods United States	28	2.6k 1.2×	1.3k 0.9×	423 0.9×	505 1.0×	201 0.6×	134	4.0k
Neal C. Gallagher United States	26	2.0k 1.0×	778 0.5×	470 1.0×	475 1.0×	311 0.9×	104	3.5k
M.H. Hayes United States	28	2.5k 1.2×	1.1k 0.7×	631 1.3×	727 1.5×	375 1.1×	154	5.0k
Dan E. Dudgeon United States	13	620 0.3×	1.3k 0.9×	233 0.5×	473 1.0×	440 1.3×	37	2.8k
B. Liu United States	25	1.4k 0.7×	1.2k 0.8×	139 0.3×	347 0.7×	239 0.7×	79	2.5k
Amir Averbuch Israel	31	1.6k 0.8×	496 0.3×	1.1k 2.2×	357 0.7×	223 0.6×	183	3.7k
C. K. Yuen Australia	13	665 0.3×	1.0k 0.7×	333 0.7×	751 1.5×	455 1.3×	87	3.3k

Countries citing papers authored by N. Ahmed

Since Specialization

Citations

This map shows the geographic impact of N. Ahmed's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by N. Ahmed with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites N. Ahmed more than expected).

Fields of papers citing papers by N. Ahmed

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by N. Ahmed. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by N. Ahmed. The network helps show where N. Ahmed may publish in the future.

Co-authorship network of co-authors of N. Ahmed

This figure shows the co-authorship network connecting the top 25 collaborators of N. Ahmed. A scholar is included among the top collaborators of N. Ahmed based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with N. Ahmed. N. Ahmed is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

1.

He, Qianhua, et al.. (2024). Detecting video anomalies by jointly utilizing appearance and skeleton information. Expert Systems with Applications. 246. 123135–123135. 3 indexed citations

2.

Ahmed, N., et al.. (2005). On the scot and roth algorithms for time delay estimation. 7. 371–374. 3 indexed citations

3.

Magotra, N., N. Ahmed, & Eric P. Chael. (2005). On Seismic Event Detection and Azimuth Estimation. 426–430. 1 indexed citations

4.

Ahmed, N., et al.. (2003). On a modified Duvall beamformer. 2853–2856. 1 indexed citations

5.

Hush, D., et al.. (2003). An application of neural net in decoding error-correcting codes. 782–785. 13 indexed citations

6.

Mandyam, Giridhar, N. Ahmed, & M Srinath. (2002). Implementation of sub-aperture sampling into adaptive beamforming using the conjugate gradient algorithm. 1. 731–734. 1 indexed citations

7.

Mandyam, Giridhar, N. Ahmed, & Bruce K. Armstrong. (1995). Electromagnetic pulse signal representation using orthonormal Laguerre sequences. IEEE Transactions on Electromagnetic Compatibility. 37(4). 592–595. 1 indexed citations

8.

Ahmed, N., et al.. (1984). Comparison of Two Adaptive Methods for Time Delay Estimation. IEEE Transactions on Aerospace and Electronic Systems. AES-20(5). 617–623. 2 indexed citations

9.

Ahmed, N., et al.. (1982). An algorithm for line enhancement. Proceedings of the IEEE. 70(12). 1459–1460. 13 indexed citations

10.

Rao, K.R. & N. Ahmed. (1980). A class of discrete orthogonal transforms. Computers & Electrical Engineering. 7(2). 79–97. 2 indexed citations

11.

Ahmed, N., et al.. (1976). Orthogonal Transform for Digital Signal Processing. IEEE Transactions on Systems Man and Cybernetics. SMC-6(11). 796–797. 16 indexed citations

12.

Ahmed, N., et al.. (1976). On Generating Walsh Spectrograms. IEEE Transactions on Electromagnetic Compatibility. EMC-18(4). 198–200. 3 indexed citations

13.

Stearns, S.D. & N. Ahmed. (1976). Digital Signal Analysis. IEEE Transactions on Systems Man and Cybernetics. SMC-6(10). 724–724. 232 indexed citations

14.

Ahmed, N., T. Natarajan, & K.R. Rao. (1974). Discrete Cosine Transform. IEEE Transactions on Computers. C-23(1). 90–93. 3279 indexed citations breakdown →

15.

Ahmed, N.. (1972). Some considerations of the discrete Fourier and Walsh-Hadamard transforms. c 21. 495–498. 1 indexed citations

16.

Ahmed, N. & K.R. Rao. (1972). A phase spectrum for binary fourier Representation. International Journal of Computer Mathematics. 3(1-4). 85–101. 4 indexed citations

17.

Ahmed, N. & Rebecca Bates. (1971). A Power Spectrum and Related Physical Interpretation for the Multi-Dimensional Bifore Transform. IEEE Transactions on Electromagnetic Compatibility. EMC-13(3). 47–50. 2 indexed citations

18.

Rao, K.R. & N. Ahmed. (1969). Evaluation of transition matrices. IEEE Transactions on Automatic Control. 14(6). 779–780. 8 indexed citations

19.

Ahmed, N. & K.R. Rao. (1968). Recursive techniques for obtaining Padé approximants. Proceedings of the IEEE. 56(6). 1101–1102. 1 indexed citations

20.

Ahmed, N. & K.R. Rao. (1967). A determinant formulation for the inverse z-transform. Proceedings of the IEEE. 55(11). 2031–2031. 1 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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