ICI reduction in OFDM systems using a new family of Nyquist-I pulses

Arrano, Hernan F.; Azurdia-Meza, César A.

doi:10.1109/latincom.2014.7041838

Cited by 6 publications

(3 citation statements)

References 15 publications

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“…is the pulse shaping filter, N is the number of subcarriers, and f D is the maximum Doppler shift. Many studies have investigated the impact of pulse shaping filters in reducing ICI power [19]- [22]. These studies show that the impact of ICI could be significantly reduced using advanced pulse shaping filters, e.g., raised cosine filter, improved sinc-power, and Nyquist-I.…”

Section: Inter-carrier Interferencementioning

confidence: 99%

Physical Layer Performance Modeling of Modern Multicarrier Modulation Techniques

Anwar

Kumar

Franchi³

et al. 2022

IEEE Trans. Commun.

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The fifth-generation (5G) and beyond communications are facing the challenge to meet the diverse requirements of modern use cases. Multicarrier modulation techniques are the key component of physical layer (PHY) design, which has the potential to improve the efficiency and reliability of current communications and hence to address the challenge. In stateof-the-art wireless technologies (i.e., NR and IEEE 802.11ax) orthogonal frequency division multiplexing (OFDM) is employed at PHY, although it has many disadvantages, i.e., peak-toaverage power ratio (PAPR), out-of-band emission (OOBE), and sensitivity to carrier frequency offset (CFO). To overcome OFDM drawbacks several multicarrier modulation techniques are being considered, such as discrete Fourier transform-spread-OFDM (DFT-s-OFDM), generalized frequency division multiplexing (GFDM), and orthogonal time frequency space (OTFS). In this paper, we develop the physical layer abstraction (PLA) of these multicarrier techniques to evaluate and compare their performance in various use cases and scenarios. The PLA is commonly used in system-level simulators to avoid timeconsuming PHY simulations. The validation results show that performance can be accurately estimated through PLA at least thousands times faster. Besides, the developed PLA is utilized to compare and evaluate the performance of multicarrier techniques in different fading conditions.

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Section: Inter-carrier Interferencementioning

confidence: 99%

Physical Layer Performance Modeling of Modern Multicarrier Modulation Techniques

Anwar

Kumar

Franchi³

et al. 2022

IEEE Trans. Commun.

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“…In order to attain a required bandwidth and transmission time, some of these blocks should be concatenated in frequency and time. For block spreading, the spreading/coding matrix C ∈ C MN × MN 2 , is used to precode the complex symbolsx ∈ C MN 2 ×1 , so the transmitted data symbols x ∈ C MN ×1 are obtained by x = Cx (50) and the received data symbolsỹ are produced by decoding the received symbolsỹ…”

Section: B Block Spread Fbmc/oqammentioning

confidence: 99%

“…The efficiency of IPLCP was analysed in multiplexing schemes based on OFDM in [50], [51]. Additionally, the sinc parametric linear combination pulse (SPLCP) was proposed in [52] and the PMSP was proposed in [53] which attempts to reduce the amplitude of the sidelobes and leads to much better BER performance than ISP.…”

Section: Introductionmentioning

confidence: 99%

Evaluation and Analysis of FBMC/OQAM Systems Based on Pulse Shaping Filters

2020

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Cyclic prefix orthogonal frequency division multiplexing (CP-OFDM) is the most widespread multicarrier modulation scheme. However, the use of a rectangular filter in CP-OFDM causes poor outof-band (OoB) radiation. Moreover, the CP causes spectral efficiency loss. To overcome these limitations, a filter bank multicarrier (FBMC) was proposed which uses prototype pulse shaping filters that can be adapted to fulfil the system requirements. The choice of the filter is crucial for FBMC/offset quadrature amplitude modulation (OQAM) due to its significant impact on the achieved performance. In this paper, new prototype pulse shaping filters in FBMC/OQAM systems are proposed, aiming to improve the system performance. A number of prototype pulse shaping filters, such as raised cosine pulse (RC), root raised cosine pulse (RRC), better than raised cosine pulse (BTRC), modified Bartlett-Hanning (MBH), improved sinc power pulse (ISP), phase modified sinc pulse (PMSP), parametric linear pulse (PLP), linear combination pulse (LCP), PHYDYAS and Hermite, are considered. The performance of each pulse shaping filter in FBMC/OQAM is evaluated and compared other in terms of the power spectral density (PSD), spectral efficiency, signal-to-interference ratio (SIR), time offset (TO), carrier frequency offset (CFO) and bit error rate (BER) performance over various channels. In addition, as multiple input multiple output (MIMO) is one of the main challenges associated with FBMC, we propose the new approach that use the frequency/time block spreading based on a Walsh-Hadamard (WH) code in MIMO FBMC/OQAM and investigate the combination of the our proposed prototype pulse shaping filters with MIMO systems. The proposed filters are shown to be suitable candidates for FBMC/OQAM systems.

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Performance Enhancement of OFDM-Based Systems Using Improved Parametric Linear Combination Pulses

Azurdia-Meza

Arrano

Estevez

et al. 2015

Wireless Pers Commun

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Artículo de publicación ISIAs the demand for better performance increases in next-generation networks, such as 5G technologies, more efficient modulation techniques are required. In this work, we evaluate the performance of the improved parametric linear combination pulses (IPLCP) in orthogonal frequency division multiplexing (OFDM) based systems. OFDMbased systems are very sensitive to frequency offset errors, and are characterized by producing high peak-to-average power ratio (PAPR) values. The IPLCP is evaluated in terms of average inter-carrier interference power, average signal to interference power, PAPR, and bit error rate. Theoretical and numerical simulations show that the IPLCP pulse performs well in OFDM-based systems in comparison to other existing pulses

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ICI reduction in OFDM systems using a new family of Nyquist-I pulses

Cited by 6 publications

References 15 publications

Physical Layer Performance Modeling of Modern Multicarrier Modulation Techniques

Physical Layer Performance Modeling of Modern Multicarrier Modulation Techniques

Evaluation and Analysis of FBMC/OQAM Systems Based on Pulse Shaping Filters

Performance Enhancement of OFDM-Based Systems Using Improved Parametric Linear Combination Pulses

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