Faster than Nyquist-an enabler for achieving maximum spectral efficiency in coexistence scenarios?

Le, Chung; Fuhrwerk, Martin; Schellmann, Malte; Peissig, Jürgen

doi:10.1109/eusipco.2015.7362763

Cited by 2 publications

(2 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For instance, the authors in [15] studied the tradeoff between increasing the spectral efficiency (SE) of FTN signaling, as a result of the accelerated pulses' transmission in time, and increasing the FTN signaling peak to average power ratio. In [16], the effectiveness of multicarrier FTN signaling is investigated for coexistence scenarios. In particular, it was shown that multicarrier FTN signaling can compensate for the loss in SE due to using guard bands between different systems.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A Very Low Complexity Successive Symbol-by-Symbol Sequence Estimator for Faster-Than-Nyquist Signaling

2017

View full text Add to dashboard Cite

In this paper, we investigate the sequence estimation problem of binary and quadrature phase shift keying faster-than-Nyquist (FTN) signaling and propose two novel low-complexity sequence estimation techniques based on concepts of successive interference cancellation. To the best of our knowledge, this is the first approach in the literature to detect FTN signaling on a symbol-by-symbol basis. In particular, based on the structure of the self-interference inherited in FTN signaling, we first find the operating region boundary-defined by the root-raised cosine (rRC) pulse shape, its roll-off factor, and the time acceleration parameter of the FTN signaling-where perfect estimation of the transmit data symbols on a symbol-by-symbol basis is guaranteed, assuming noise-free transmission. For noisy transmission, we then propose a novel low-complexity technique that works within the operating region and is capable of estimating the transmit data symbols on a symbol-by-symbol basis. To reduce the error propagation of the proposed successive symbol-by-symbol sequence estimator (SSSSE), we propose a successive symbol-by-symbol with go-back-K sequence estimator (SSSgbKSE) that goes back to reestimate up to K symbols, and subsequently improves the estimation accuracy of the current data symbol. Simulation results show that the proposed sequence estimation techniques perform well for low intersymbol interference (ISI) scenarios and can significantly increase the data rate and spectral efficiency. Additionally, results reveal that choosing the value of K as low as 2 or 3 data symbols is sufficient to significantly improve the bit-error-rate performance. Results also show that the performance of the proposed SSSgbKSE, with K = 1 or 2, surpasses the performance of the lowest complexity equalizers reported in the literature, with reduced computational complexity. Index TermsFaster-than-Nyquist (FTN) signaling, intersymbol interference (ISI), Mazo limit, self-interference, sequence estimation, successive interference cancellation

show abstract

Section: Introductionmentioning

confidence: 99%

“…plots the SE of QPSK Nyquist (i.e., no ISI and τ = 1) and FTN signaling as a function16 BER performance of QPSK FTN sequence estimation as a function of E b…”

mentioning

confidence: 99%