Analog single-carrier transmission with frequency-domain equalization

Vo, Thanh Hai; Kumagai, Shinya; Tatsunori, Obara; Adachi, Fumiyuki

doi:10.1109/apcc.2013.6766039

Cited by 4 publications

(4 citation statements)

References 18 publications

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“…Considering (6), the inequality constraints are converted to equality constraints by introducing nonnegative slack variable, 2 ∀ 1 ≤ ≤ 2 [36], so that:…”

Section: Methodsmentioning

confidence: 99%

“…In order to achieve high throughput/data rates, single carrier modulation schemes in time past were not able to mitigate the frequency selective related problem of the transmission process [5] which arises from the highly dispersive and multipath driven wireless channel. This made the Orthogonal Frequency Division Multiplexing (OFDM) technique ideal for mitigating frequency selectivity [6,7] while improving transmission data rate through diverse multicarrier and spatial diversity techniques [9,10] whereas single carrier systems deployed the use of equalizers [8]. In recent past, single carrier with frequency domain equalization (SC-FDE) has been investigated to have similar properties with OFDM as it eliminates the high peak-to-average power ratio (PAPR) associated with OFDM [11,12].…”

Section: Introductionmentioning

confidence: 99%

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A Novel Adaptive OFO-OFDM Modulation for Visible Light Communication

Ibhaze

Edeko

Orukpe

2021

Süleyman Demirel Üniversitesi Fen Bilimleri Enstitüsü Dergisi

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Radio frequency techniques have been deployed in the past time for wireless communication and following its spectral crunch and limited throughput, the visible light spectrum with enormously large bandwidth and potentials for high throughput is being investigated in this work. This study is aimed at investigating and modeling a signal conditioning scheme in the visible light spectrum in view of enhancing the throughput of the network. To effectively enhance communication throughput, a possible solution is to deploy multicarrier techniques. In this work, an adaptive Optimized Flipped Optical (OFO) OFDM is proposed for improved throughput using Lagrange Multiplier and Broyden Fletcher Goldfarb Shanno Algorithm (BFGSA). The Lagrange Multiplier technique was used to formulate the model for the optimization of the throughput constrained by the bit error rate (BER) and the total subcarrier transmit power whereas the BFGSA was used for the estimation of the approximation to the Hessian matrix for the computation of the optimal throughput value. Results showed improved spectral efficiency in favor of the proposed algorithm when compared with the conventional schemes. Further validations revealed the performance superiority of the proposed algorithm when compared with Castel, Wyglinski and Bedeer algorithms under comparable operating conditions for a given average signal to noise ratio (SNR).

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“…Considering (6), the inequality constraints are converted to equality constraints by introducing nonnegative slack variable, 2 ∀ 1 ≤ ≤ 2 [36], so that:…”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Novel Adaptive OFO-OFDM Modulation for Visible Light Communication

Ibhaze

Edeko

Orukpe

2021

Süleyman Demirel Üniversitesi Fen Bilimleri Enstitüsü Dergisi

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show abstract

“…Therefore, the spectrum efficiency is the same as conventional analog signal transmission, (i.e., it is inherently narrowband). We showed in [4] that analog SC-FDE achieves better normalized mean square error (NMSE) performance than the conventional analog signal transmission. In particular, combination of distributed spectrum mapping [7] and minimum mean square error (MMSE)-based FDE gives the best performance.…”

Section: Introductionmentioning

confidence: 99%

“…In order to overcome this problem, we recently proposed an analog single-carrier transmission with frequency-domain equalization (called analog SC-FDE) [4].…”

Section: Introductionmentioning

confidence: 99%

Subcarrier Combining for an Analog Single-Carrier Transmission

Kumagai

Adachi

2015

2015 IEEE 82nd Vehicular Technology Conference (VTC2015-Fall)

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Analog single-carrier transmission with frequencydomain equalization (called analog SC-FDE) was recently proposed in order to improve performance of analog signal transmission. Analog SC-FDE signal spectrum has a complex conjugate relation between lower sideband (LSB) and upper sideband (USB) since analog signal is real-valued. Exploiting this property, the received LSB and USB subcarriers can be combined to obtain an additional frequency diversity gain. In this paper, a subcarrier combining method is proposed to improve the performance of analog SC-FDE. A theoretical analysis of normalized mean square error (NMSE) performance is presented to evaluate the effect of subcarrier combining and is confirmed by computer simulation. It is shown that subcarrier combining improves effectively the NMSE performance in multipath fading channel.

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Analog SC-FDE using single sideband technique

Kumagai

Adachi

2014

2014 International Conference on Advanced Technologies for Communications (ATC 2014)

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Analog single-carrier transmission with frequency-domain equalization

Cited by 4 publications

References 18 publications

A Novel Adaptive OFO-OFDM Modulation for Visible Light Communication

A Novel Adaptive OFO-OFDM Modulation for Visible Light Communication

Subcarrier Combining for an Analog Single-Carrier Transmission

Analog SC-FDE using single sideband technique

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