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Sadao Takenaka

dblp:80/6827 · DBLP profile ↗
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3ranked-venue papers
1as first author
0since 2021 · last 1987
—ORCID · none

Domains — the database's venue-derived domains; a paper can count in several

Computer networks · 3 · 1 first-author

Expertise — from the expertise taxonomy: the topics of the expert's papers under the CCF categories. A weight counts papers with recency: 1 for a paper about the topic, 0.3 when the topic is its context, halved every five years.

Computer networks
1 paper
Physical-layer communications · 62% Wireless networking · 38%

Topics — the 4 heaviest of 4, each with the papers that count most for it

TopicWeightPapersLastEvidence papers
Physical-layer communications › synchronization
carrier recovery		 0.011987
Multilevel QAM Modulation Techniques for Digital Microwave Radios · IEEE J. Sel. Areas Commun. 1987
Wireless networking › wireless transmission › microwave communication
digital microwave radio		 0.011987
Multilevel QAM Modulation Techniques for Digital Microwave Radios · IEEE J. Sel. Areas Commun. 1987
Physical-layer communications › fading channels
multipath fading		 0.011987
Multilevel QAM Modulation Techniques for Digital Microwave Radios · IEEE J. Sel. Areas Commun. 1987
Physical-layer communications › equalization › linear equalization
transversal equalizer		 0.011987
Multilevel QAM Modulation Techniques for Digital Microwave Radios · IEEE J. Sel. Areas Commun. 1987

Methods — techniques the papers use, named apart from their topics

signature estimation · 0.0feedback balance coding · 0.0
YearPublicationVenuePosition
1987 Multilevel QAM Modulation Techniques for Digital Microwave Radios
abstract
A pilot carrier injection method is described together with feedback balance coding which reduces spectral power near the carrier. Robustness of carrier recovery using the pilot carrier injection method is theoretically estimated. The estimation suggests that recovered carrier SNR higher than 40 dB can be expected even under muitipath fading with notch depth of 45 dB located just at the carrier frequency. Signatures for multipath fading are estimated for a 64-QAM system with transversal equalizers as a countermeasure. Measured signatures agree reasonably well with the calculated ones. Dependences of signatures on modulation level, transversal equalizer tap number, and rolloff rate are also shown.
Yoshimasa Daido, Sadao Takenaka, Eisuke Fukuda, Toshiaki Sakane, Hiroshi Nakamura
 IEEE J. Sel. Areas Commun.2
1984 The Adaptive Transversal Equalizer for 90MBPS 64-QAM Radio Relay System
Koji Aoki, Koji Ikuta, Sadao Takenaka, Yoshimasa Daido
 ICC (2)4
1984 A New 4 GHz 90 Mbps Digital Radio System Using 64-QAM Modulation
Sadao Takenaka, Yukio Takeda, Toshiaki Sakane, Hiroshi Nakamura, N. Toyonaga
 ICC (2)1