Low-complexity CFO correction of frequency-spreading SMT in uplink of multicarrier multiple access networks

Sabeti, Parna; Saeedi-Sourck, Hamid; Omidi, Mohammad Javad

doi:10.1109/iraniancee.2015.7146250

Cited by 3 publications

(5 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…where G is the frequency response of the PF. The FS-FBMC receiver first applies an IFFT of size L on the part of the r signal containing the FBMC symbol to demodulate in order to obtain the X n signal in frequency domain (6). Then, it introduces a filtering stage in frequency domain, as described in (7): the frequency response of the PF G is convoluted with the X n signal, for instance using a Finite Impulse Response (FIR) filter.…”

Section: B Fs-fbmc Receiver Descriptionmentioning

confidence: 99%

“…This additional element represents an array of band-pass filters that separate the input signal into multiple components or subcarriers, each one carrying a single frequency sub-band of the original signal. As a promising variant of filtered modulation schemes, FBMC, originally proposed in [4] and also called OFDM/OQAM [5] or staggered modulated multitone (SMT) [6], can potentially achieve a higher spectral efficiency than OFDM since it does not require the insertion of a Cyclic-Prefix (CP). Additional advantages include the robustness against highly variant fading channel conditions and imperfect synchronization by selecting the appropriate PF type and coefficients [3].…”

Section: Fbmc/oqam System Descriptionmentioning

confidence: 99%

Section: B Fs-fbmc Receiver Descriptionmentioning

confidence: 99%

See 2 more Smart Citations

Design and Evaluation of a Novel Short Prototype Filter for FBMC/OQAM Modulation

2018

View full text Add to dashboard Cite

Filter-Bank Multi-Carrier with Offset Quadrature Amplitude Modulation (FBMC/OQAM) is considered by recent research projects as one of the key enablers for the future 5G air interface. It exhibits better spectral shape and improves mobility support compared to Orthogonal Frequency-Division Multiplexing (OFDM) thanks to the use of a time and frequency localized prototype filter. The choice of this filter is crucial for FBMC/OQAM, due to its substantial impact on achieved performance and complexity levels. In the context of 5G, short frame sizes are foreseen in several communication scenarios to reduce system latency, and therefore short filters are preferred. In this context, a novel short filter allowing for near perfect reconstruction and having the same size as one OFDM symbol is proposed. Using Frequency-Spread (FS) implementation for the FBMC/OQAM receiver, analytical analysis and simulation results show that the proposed filter exhibits better robustness to several types of channel impairments when compared to Stateof-The-Art (SoTA) prototype filters and OFDM modulation. In addition, FS-based hardware architecture of the filtering stage is proposed, showing lower complexity than the classical PolyPhase Network (PPN)-based implementation.

show abstract

Section: B Fs-fbmc Receiver Descriptionmentioning

confidence: 99%

Section: Fbmc/oqam System Descriptionmentioning

confidence: 99%

See 1 more Smart Citation

Design and Evaluation of a Novel Short Prototype Filter for FBMC/OQAM Modulation

2018

View full text Add to dashboard Cite

show abstract

“…This scheme is promising techniques which can relax the orthogonality condition for real symbol only. Also, it has better spectral efficiency than OFDM while it doesn't need CP insertion (Sabeti, Saeedi-Sourck, and Omidi 2015).…”

Section: -Fbmc Systemsmentioning

confidence: 99%

Efficient Implementation of MIMO FBMC/OQAM Scheme based on Block Spreading

2022

Delta University Scientific Journal

View full text Add to dashboard Cite

Filter bank multicarrier (FBMC) was proposed as an alternative approach to cyclic prefix -orthogonal frequency division multiplexing (CP-OFDM). FBMC is considered a promising non-orthogonal waveform due to its very low out of band radiation and high spectral efficiency. Nevertheless, the orthogonality constraint for FBMC/OQAM is relaxed being limited only to the real field which causes intrinsic interference. The presence of this interference leads to incompatibility between some well-known multiple-input and multiple-output (MIMO) schemes and FBMC/ offset quadrature amplitude modulation (OQAM). From this perspective, we proposed in this paper an efficient implementation for FBMC/OQAM based on block spreading to restore the complex orthogonality to enable applying MIMO with FBMC/OQAM. The proposed scheme uses a discrete Haar transform (DHT) to enable low computational complexity. The performance of proposed approaches has been investigated and compared with CP-OFDM under three MIMO schemes, as space-time block coding (STBC) Alamuoti schemes, spatial multiplexing with zero-forcing (ZF), and maximum likelihood (ML) detection schemes. The simulation results show that the proposed schemes enable to apply of the MIMO schemes with FBMC with almost the same performance and complexity as CP-OFDM.

show abstract

Section: Fbmc/oqam System Modelmentioning

confidence: 99%

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

2020

View full text Add to dashboard Cite

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.

show abstract

Low-complexity CFO correction of frequency-spreading SMT in uplink of multicarrier multiple access networks

Cited by 3 publications

References 11 publications

Design and Evaluation of a Novel Short Prototype Filter for FBMC/OQAM Modulation

Design and Evaluation of a Novel Short Prototype Filter for FBMC/OQAM Modulation

Efficient Implementation of MIMO FBMC/OQAM Scheme based on Block Spreading

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

Contact Info

Product

Resources

About