Orthogonal Chirp Division Multiplexing for Baseband Data Communication Systems

Dib, Leonardo de M. B. A.; Colen, Guilherme R.; Filomeno, Mateus de L.; Ribeiro, Moisés V.

doi:10.1109/jsyst.2019.2927710

Cited by 24 publications

(10 citation statements)

References 22 publications

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“…In 2016, X. Ouyang and J. Zhao introduced OCDM, showing that it performs better than OFDM [2], [3]. Later, this modulation technique was also considered for submarine links [19], [20], Multiple-Input Multiple-Output (MIMO) systems [21], [22], baseband powerline communications [23], powerline sensing [24], and uplink multiple access [25], [26]. Since OCDM is based on the use of chirp waveforms, some contributions also studied its adoption for radar applications [24], [27].…”

Section: A Original Contributions With Respect To the Existing Litera...mentioning

confidence: 99%

Characterization of Orthogonal Chirp Division Multiplexing and Performance Evaluation at THz Frequencies in the Presence of Phase Noise

Cuozzo,

Longhi,

Pasolini

2024

IEEE Open J. Commun. Soc.

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Due to its superior performance, Orthogonal Chirp Division Multiplexing (OCDM) has recently gained attention as a potential replacement for Orthogonal Frequency Division Multiplexing (OFDM) in beyond-5G systems. In this paper, we provide an analytical characterization of OCDM signals, elucidating the theoretical principles that enable their numerical generation through the Inverse Discrete Fresnel Transform (IDFnT), despite the presence of severe frequency-domain aliasing that substantially distorts the signal at the transmitter output. Furthermore, in light of the proposed utilization of the THz band in beyond-5G systems, we investigate the performance of OCDM in this frequency range in the presence of thermal, molecular, and phase noise. To model the latter, which is expected to be a significant challenge at THz frequencies, we take as a reference an actual Phase Locked Loop (PLL) oscillator operating at 237.7 GHz. The numerical results reveal the achievable performance of OCDM as a function of several key factors, including the modulation order, the bandwidth, the number of chirps constituting the signal, the oscillator parameters, the channel model, and the use of techniques aimed at mitigating the impact of phase noise. The findings are compared with those of OFDM, which is regarded as a benchmark due to its adoption in 4G and 5G systems, and demonstrate the superior performance of OCDM also in the presence of significant phase noise.

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Section: A Original Contributions With Respect To the Existing Litera...mentioning

confidence: 99%

Characterization of Orthogonal Chirp Division Multiplexing and Performance Evaluation at THz Frequencies in the Presence of Phase Noise

Cuozzo,

Longhi,

Pasolini

2024

IEEE Open J. Commun. Soc.

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“…The mapping process results in the mapped vector X ζ,l ∈ C 2N×1 being in the discrete frequency domain. The details of this mapping process can be found in [8] for the HS-OFDM scheme, [21] for the OTFDM schem, and [16] for both the OCDM scheme and SCCP.…”

Section: Generic Transmittermentioning

confidence: 99%

“…and using the so-called type-IV mapping presented in [16], since it ensures that the OCDM scheme is fit for performing in baseband data communication systems. Therefore, the OCDM scheme transmitter and receiver matrix are equal to…”

Section: The Ocdm Schemementioning

confidence: 99%

“…Moreover, the single carrier cyclic prefix (SCCP) scheme was considered as an alternative to the OFDM in [14], showing competitive BER performance in comparison to the OFDM when the normalized signal-to-noise ratio (nSNR) in the frequency domain is not frequency selective. The orthogonal division multiplexing (OCDM) scheme, which combines the orthogonality principle with the chirp spread spectrum (CSS) to yield a multichirp scheme [15], was first applied to PLC systems in [16]. The attractiveness of the OCDM scheme relies on the use of the discrete Fresnel transform (DFnT) implemented with the discrete Fourier transform (DFT).…”

Section: Introductionmentioning

confidence: 99%

“…Considering the OCDM scheme, the literature shows investigations considering the carrier frequency offset and narrowband interference in wireless systems [25]. Moreover, the authors in [16] compared the HS-OFDM scheme, SCCP, and OCDM sensitivity to the cyclic prefix (CP) length violation based on the Monte Carlo Simulation. Considering the OTFDM schem, [21] introduced and applied it to reduce computational complexity during the resource allocation process while [26] provided an initial discussion about the CP length violation and the symbol timing offset (STO).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Performance Analysis of Orthogonal Multiplexing Techniques for PLC Systems with Low Cyclic Prefix Length and Symbol Timing Offset

Moreira

Camponogara

Baig

et al. 2023

Sensors

Self Cite

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This paper investigates the degradation caused by interference resulting from cyclic prefix violation and symbol timing offset in narrowband power line communication systems. In this sense, it presents a unified formulation from which Hermitian symmetric orthogonal frequency division multiplexing (HS-OFDM), orthogonal chirp division multiplexing (OCDM), single-carrier cyclic prefix (SCCP), and orthogonal time–frequency division multiplexing (OTFDM) can be easily derived. The paper then provides closed-form expressions for quantifying the aforementioned interference in the presence of a frequency domain equalizer. The numerical analyses exhibit the performances of these schemes under various data communication conditions, such as the availability of channel state information, the presence or absence of interference, modeling of additive noise as a white or colored Gaussian random process, frequency domain equalizer type, and the use of bit and power allocation techniques. The closed-form expressions and performance analyses regarding achievable data rate and bit error probability provide guidance for dealing with distinct constraints in narrowband power line communication (PLC) systems using the HS-OFDM, OCDM, SCCP, or OTFDM scheme. Lastly, the unified formulation and results obtained motivate the design of multi-scheme transceivers.

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Orthogonal Chirp Division Multiplexing: An Emerging Multi Carrier Modulation Scheme

Singh

Goel²

2022

Communications in Computer and Information Science

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Orthogonal Chirp Division Multiplexing for Baseband Data Communication Systems

Cited by 24 publications

References 22 publications

Characterization of Orthogonal Chirp Division Multiplexing and Performance Evaluation at THz Frequencies in the Presence of Phase Noise

Characterization of Orthogonal Chirp Division Multiplexing and Performance Evaluation at THz Frequencies in the Presence of Phase Noise

Performance Analysis of Orthogonal Multiplexing Techniques for PLC Systems with Low Cyclic Prefix Length and Symbol Timing Offset

Orthogonal Chirp Division Multiplexing: An Emerging Multi Carrier Modulation Scheme

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