Performance analysis of SEFDM with optimal subcarriers spectrum shapes

Gelgor, Aleksandr; Gorlov, Anton; Nguyen, Van Phe

doi:10.1109/blackseacom.2017.8277680

Cited by 33 publications

(2 citation statements)

References 11 publications

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“…2017 [80] Multi-antenna SEFDM Jun. 2017 [81] Performance analysis via using optimal spectrum shape Aug. 2017 [82] Zero head DFT based waveform design Sep. 2017 [83] Frequency-domain interference cancellation Nov. 2017 [84] Decision-feedback SEFDM demodulation Nov. 2017 [85] ICI mitigation using ICI components reconstruction and cancellation at the receiver detection algorithms have been researched and included. In addition to signal generation and detection, many applications are designed based on SEFDM such as physical layer security, satellite communications, power amplifiers, Internet of things, digital subscriber line (DSL) communications, PAPR suppression and multi-antenna systems.…”

Section: Tabulated Summary Of Sefdm Key Papersmentioning

confidence: 99%

The First 15 Years of SEFDM: A Brief Survey

Darwazeh

Ghannam

2018

2018 11th International Symposium on Communication Systems, Networks &Amp; Digital Signal Processing (CSNDSP)

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Spectrally efficient frequency division multiplexing (SEFDM) is a multi-carrier signal waveform, which achieves higher spectral efficiency, relative to conventional orthogonal frequency division multiplexing (OFDM), by violating the orthogonality of its sub-carriers. This survey provides the history of SEFDM development since its inception in 2003, covering fundamentals and concepts, wireless and optical communications applications, circuit design and experimental testbeds. We focus on work done at UCL and outline work done other universities and research laboratories worldwide. We outline techniques to improve the performance of SEFDM and its practical utility with focus on signal generation, detection and channel estimation.

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Section: Tabulated Summary Of Sefdm Key Papersmentioning

confidence: 99%

The First 15 Years of SEFDM: A Brief Survey

Darwazeh

Ghannam

2018

2018 11th International Symposium on Communication Systems, Networks &Amp; Digital Signal Processing (CSNDSP)

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“…Assume the value of maximum energy concentration in the occupied frequency bandwidth is equal to 99% [26], [28] of the whole energy of the finite-time signal in the infinite frequency bandwidth. Then, the optimization problem (2) can be given by:…”

Section: Ftn Signal Optimization By Conforming Criterion Of Maximmentioning

confidence: 99%

Optimizing the Shape of Faster-Than-Nyquist (FTN) Signals With the Constraint on Energy Concentration in the Occupied Frequency Bandwidth

et al. 2020

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The achievement of the boundary values of spectral efficiency is associated with the development of methods for generating and receiving signals with a compact spectrum. The reason is a constant increase in the capacity of existing communication channels caused by an increase in the volume of transmitted information. Moreover, the allocated frequency bandwidths have natural limitations, and they are almost all reached. The effective way to approach the boundary values of spectral efficiency is the application of spectrally efficient signals, such as FTN (Faster-Than-Nyquist) signals. This article proposes to synthesize optimal FTN signals that are more compact in the spectrum than RRC (root raised cosine) pulses-based signals. The criterion of maximum energy concentration in the occupied frequency bandwidth and the constraint on the cross-correlation coefficient are used to solve the optimization problem. The contribution of this work is the optimization of FTN signal shape. The obtained optimal FTN signals provide a 24% increase in spectral efficiency compared to the RRC pulses-based signals. At the same time, the energy loss stays almost unchanged. To the best of authors' knowledge, this is the first case when the frequency bandwidth reduction is achieved at practically no energy loss. The simulation modeling in channels with additive white Gaussian noise and fading channels is done with regard to the FTN-SC-FDE (Faster-Than-Nyquist-Single Carrier system with Frequency Domain Equalization) structure. The optimal FTN signals presented in this work can be used to increase the spectral efficiency of satellite broadcasting systems, such as DVB-S2/S2X. INDEX TERMS Faster than Nyquist signaling; maximum band energy concentration criterion; optimization methods; spectral efficiency

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