Hybrid OFDM-IM System for BER Performance Improvement

Mrkic, Jovana; Kočan, Enis

doi:10.1109/telfor.2018.8611873

Cited by 3 publications

(2 citation statements)

References 5 publications

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“…It has also been demonstrated in [87] that the indexed modulation (IM) applied in OFDM systems provides an improvement in energy efficiency and spectral efficiency depending on the number of active subcarriers, but this performance in terms of of BER is degraded that it is important to use OFDM-IM-SM in 5G systems. The authors Jovana Mrkic and Enis Kocan have proposed a hybrid system consisting of OFDM-IM at high SNR values and conventional OFDM at low SNR values [88]. It is shown in [89] that the use of DM-OFDM-IM gives a reduced bit error rate (BER) compared to the conventional DMOFDM-IM system.…”

Section: Index Modulation (Im)mentioning

confidence: 99%

A Comprehensive Survey of Candidate Waveforms for 5G, beyond 5G and 6G Wireless Communication Systems

Adoum¹,

Zoukalne²,

Idriss³

et al. 2023

OJAppS

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The evolution of global mobile data over the past decades in broadcasting, Internet of Things (IoT), education, healthcare, commerce, and energy has put strong pressure on 3G/4G mobile networks to improve their service offerings. These generations of mobile networks were initially invented to meet the requirements of the above-mentioned applications. However, as the requirements in these applications continue to increase, new mobile technologies such as 5G (fifth generation), 5G and beyond (B5G, beyond fifth generation), and 6G (sixth generation) are still progressing and being experimented. These networks are very heterogeneous generations of mobile networks that will have to offer very high throughput per user, good energy efficiency, better traffic capacity per area, improved spectral efficiency, very low latency, and high mobility. To meet these requirements, the radio interface of future mobile networks will have to be flexible and rationalized the available frequency resources. Therefore, new modulation methods, access techniques and waveforms capable of supporting these technological changes are proposed. This review presents brief descriptions of the types of 5G, B5G, and 6G waveforms. The 5G consists of OFDM including its transmission techniques: generalized frequency division multiplexing (GFDM), filter bank based multi-carrier (FBMC), universal filtered multi-carrier (UFMC), and index modulation (IM). Meanwhile, the 6G covers orthogonal time frequency space (OTFS), orthogonal chirp division multiplexing (OCDM) and orthogonal time sequence multiplexing (OTSM). The networks' potentialities, advantages, disadvantages, and future directions are outlined.

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Section: Index Modulation (Im)mentioning

confidence: 99%

A Comprehensive Survey of Candidate Waveforms for 5G, beyond 5G and 6G Wireless Communication Systems

Adoum¹,

Zoukalne²,

Idriss³

et al. 2023

OJAppS

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show abstract

“…In [45], the authors have proposed a new variant of OFDM Index Modulation titled OFDM with all index modulation (OFDM-AIM) wherein the symbol bits used in OFDM-IM is eliminated by replacing the PSK/QAM modulator constellation by subblock modulator and they suggest that to accomplish the high diversity gain, the subblocks with higher order set design must be utilised and they propose an algorithm to construct the subblocks set with maximum order diversity. In [46], hybrid OFDM-IM is proposed by the authors, wherein the mode can be switched alternately either to classical OFDM or OFDM-IM based on the channel conditions. If the SNR values range from low to medium range, then normal OFDM is used for transmission and when the SNR is high OFDM-IM is used.…”

Section: Related Work and Motivationmentioning

confidence: 99%

Frequency Synchronization in Frequency Domain OFDM-IM based WLAN Systems

Kumar

2023

JCOMSS

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The next-generation of wireless local area network systems are being conceptualized with new applications, smart devices and use cases which mandate unprecedented levels of high data rates, spectral efficiency, reliability, low latency and high energy efficiency. The index modulated orthogonal frequency division multiplexing (OFDM-IM) stands out as the most endearing candidate for physical layer modulation technique which provides a smooth transit to green communications. However, OFDM-IM being a multicarrier technique similar to classical OFDM is also very sensitive to frequency synchronization errors and needs to be addressed on priority. In this article, a novel algorithm is proposed which estimates and corrects the carrier frequency offset at the receiver and the algorithm's performance is compared with two frequency domain variants of OFDM-IM and the classical OFDM under the same channel conditions and the simulation results show that our algorithm is not only capable of meeting the standard requirement of ±20ppm but can handle higher offsets till ±30ppm.

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Carrier frequency synchronization for WLAN systems based on MIMO-OFDM-IM

Lalitha,

Kumar

2024

J Wireless Com Network

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Hybrid OFDM-IM System for BER Performance Improvement

Cited by 3 publications

References 5 publications

A Comprehensive Survey of Candidate Waveforms for 5G, beyond 5G and 6G Wireless Communication Systems

A Comprehensive Survey of Candidate Waveforms for 5G, beyond 5G and 6G Wireless Communication Systems

Frequency Synchronization in Frequency Domain OFDM-IM based WLAN Systems

Carrier frequency synchronization for WLAN systems based on MIMO-OFDM-IM

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