Orthogonal Chirp Delay-Doppler Division Multiplexing (CDDM) Modulation for High Mobility Communications Article Swipe
This paper proposes a novel multi-carrier modulation framework for high-mobility communication scenarios. Our key idea lies in spreading data symbols across the delay-Doppler (DD) domain through orthogonal chirp-Zak transform (CZT). To enable efficient signal multiplexing, the proposed modulation scheme employs a transmitter signal that maintains orthogonality with the inherent resolution characteristics of the DD plane. Termed as Orthogonal Chirp Delay-Doppler Division Multiplexing (CDDM), we demonstrate a synergistic integration of chirp waveform properties with the channel structure of the DD domain, thereby achieving advantages with both lower computational efficiency and improved detection performance. We introduce a novel CZT-based superimposed sparse pilot structure to enable simultaneous estimation of delay-Doppler shifts and channel coefficients. For enhanced performance, we further develop an embedded pilot scheme that demonstrates channel estimation performance comparable to that of Orthogonal Delay-Doppler Division Multiplexing (ODDM) systems. Simulation results demonstrate that CDDM achieves significant bit error rate (BER) improvements over existing modulation schemes , under perfect channel state information (CSI), as well as superior out-of-band emissions (OOBE). Further, for the imperfect CSI case, the proposed CZT-based superimposed pilot scheme leads to significantly reduced normalized mean square error (NMSE), whilst attaining equivalent estimation accuracy to that of ODDM with lower computational complexity.
Related Topics
Concepts
Orthogonality
Multiplexing
Computer science
Modulation (music)
Chirp
Electronic engineering
Channel (broadcasting)
Algorithm
Orthogonal frequency-division multiplexing
Transmitter
Bit error rate
Time-division multiplexing
SIGNAL (programming language)
Computational complexity theory
Spectral efficiency
Pilot signal
Waveform
Frequency-division multiplexing
Signal processing
Time domain
Telecommunications
Frequency domain
Statistical time division multiplexing
Key (lock)
Channel state information
Metadata
- Type
- article
- Landing Page
- http://arxiv.org/abs/2511.17991
- https://arxiv.org/pdf/2511.17991
- OA Status
- green
- OpenAlex ID
- https://openalex.org/W7106783396
All OpenAlex metadata
Raw OpenAlex JSON
- OpenAlex ID
-
https://openalex.org/W7106783396Canonical identifier for this work in OpenAlex
- Title
-
Orthogonal Chirp Delay-Doppler Division Multiplexing (CDDM) Modulation for High Mobility CommunicationsWork title
- Type
-
articleOpenAlex work type
- Publication year
-
2025Year of publication
- Publication date
-
2025-11-22Full publication date if available
- Authors
-
Bai, Chaoyuan, Fan, Pingzhi, Zhou Zhengchun, Liu, ZilongList of authors in order
- Landing page
-
https://arxiv.org/abs/2511.17991Publisher landing page
- PDF URL
-
https://arxiv.org/pdf/2511.17991Direct link to full text PDF
- Open access
-
YesWhether a free full text is available
- OA status
-
greenOpen access status per OpenAlex
- OA URL
-
https://arxiv.org/pdf/2511.17991Direct OA link when available
- Concepts
-
Orthogonality, Multiplexing, Computer science, Modulation (music), Chirp, Electronic engineering, Channel (broadcasting), Algorithm, Orthogonal frequency-division multiplexing, Transmitter, Bit error rate, Time-division multiplexing, SIGNAL (programming language), Computational complexity theory, Spectral efficiency, Pilot signal, Waveform, Frequency-division multiplexing, Signal processing, Time domain, Telecommunications, Frequency domain, Statistical time division multiplexing, Key (lock), Channel state informationTop concepts (fields/topics) attached by OpenAlex
- Cited by
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0Total citation count in OpenAlex
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| abstract_inverted_index.structure | 75, 100 |
| abstract_inverted_index.transform | 28 |
| abstract_inverted_index.Orthogonal | 57, 130 |
| abstract_inverted_index.Simulation | 136 |
| abstract_inverted_index.advantages | 82 |
| abstract_inverted_index.comparable | 126 |
| abstract_inverted_index.efficiency | 87 |
| abstract_inverted_index.equivalent | 189 |
| abstract_inverted_index.estimation | 104, 124, 190 |
| abstract_inverted_index.modulation | 6, 37, 150 |
| abstract_inverted_index.normalized | 182 |
| abstract_inverted_index.orthogonal | 26 |
| abstract_inverted_index.properties | 71 |
| abstract_inverted_index.resolution | 49 |
| abstract_inverted_index.scenarios. | 11 |
| abstract_inverted_index.complexity. | 199 |
| abstract_inverted_index.demonstrate | 64, 138 |
| abstract_inverted_index.information | 157 |
| abstract_inverted_index.integration | 67 |
| abstract_inverted_index.out-of-band | 163 |
| abstract_inverted_index.performance | 125 |
| abstract_inverted_index.significant | 142 |
| abstract_inverted_index.synergistic | 66 |
| abstract_inverted_index.transmitter | 41 |
| abstract_inverted_index.Multiplexing | 61, 133 |
| abstract_inverted_index.demonstrates | 122 |
| abstract_inverted_index.improvements | 147 |
| abstract_inverted_index.performance, | 113 |
| abstract_inverted_index.performance. | 91 |
| abstract_inverted_index.simultaneous | 103 |
| abstract_inverted_index.superimposed | 97, 175 |
| abstract_inverted_index.Delay-Doppler | 59, 131 |
| abstract_inverted_index.coefficients. | 110 |
| abstract_inverted_index.communication | 10 |
| abstract_inverted_index.computational | 86, 198 |
| abstract_inverted_index.delay-Doppler | 22, 106 |
| abstract_inverted_index.high-mobility | 9 |
| abstract_inverted_index.multi-carrier | 5 |
| abstract_inverted_index.multiplexing, | 34 |
| abstract_inverted_index.orthogonality | 45 |
| abstract_inverted_index.significantly | 180 |
| abstract_inverted_index.characteristics | 50 |
| cited_by_percentile_year | |
| countries_distinct_count | 0 |
| institutions_distinct_count | 4 |
| citation_normalized_percentile.value | 0.74040497 |
| citation_normalized_percentile.is_in_top_1_percent | False |
| citation_normalized_percentile.is_in_top_10_percent | False |