Multiple pulse amplitude and position modulation for the optical wireless channel

Zeng, Yu; Green, R.; Leeson, Mark S.

doi:10.1109/icton.2008.4598766

Cited by 16 publications

(10 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thus, it forms an amplitude-variable version of MPPM [4]. In MPAPM, the amplitudes of the pulses change as well as their positions.…”

Section: Pulse Amplitude Modulation (Pam)mentioning

confidence: 99%

“…In MPAPM, the amplitudes of the pulses change as well as their positions. Thus, it forms an amplitude-variable version of MPPM [4]. Each symbol interval of duration T=log 2 (L MPAPM )/R b is partitioned into M slots during each pulse train cycle, and there are w pulses generated [4].…”

Section: Multipulse Amplitude and Position Modulation (Mpapm)mentioning

confidence: 99%

“…Current WOC systems typically use intensity modulation and direct detection (IM/DD) [1] because of its simplicity and low cost. As alternatives, the combination pulse amplitude modulation (PAM) with pulse width modulation (PWM) was proposed in [3], and the combination PAM with MPPM in the form of multiple pulse amplitude and position modulation (MPAPM) was proposed in [4]. As alternatives, the combination pulse amplitude modulation (PAM) with pulse width modulation (PWM) was proposed in [3], and the combination PAM with MPPM in the form of multiple pulse amplitude and position modulation (MPAPM) was proposed in [4].…”

Section: Introductionmentioning

confidence: 99%

“…As a modulation compatible with IM/DD, multipulse pulse position modulation (MPPM) was proposed in [2] to achieve higher spectral efficiency and data rate over pulse position modulation (PPM); however, MPPM is not a strong candidate when the bandwidth efficiency and the data rate are of great importance. As alternatives, the combination pulse amplitude modulation (PAM) with pulse width modulation (PWM) was proposed in [3], and the combination PAM with MPPM in the form of multiple pulse amplitude and position modulation (MPAPM) was proposed in [4]. MPAPM has proven to be more efficient in terms of bandwidth and data rate, but it shows degradation in terms of power efficiency.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

A New Modified MPPM for High-Speed Wireless Optical Communication Systems

Rouissat¹,

Borsali²,

Chikh-Bled³

2013

ETRI J

View full text Add to dashboard Cite

Previous work proposed combining multipulse pulse position modulation (MPPM) with pulse amplitude modulation to form multipulse amplitude and position modulation (MPAPM), which is a hybrid modulation that results in an improvement in bandwidth efficiency but a degradation in power efficiency. In this paper, to achieve greater power efficiency and a better data rate, we propose multipulse dual amplitude‐width modulation, based on MPAPM and pulse width modulation. The proposed scheme shows a remarkable improvement in data rate and a 1.5‐dB improvement in power efficiency over MPAPM, while sustaining the bandwidth efficiency. After introducing symbol structure, we present the theoretical expressions of spectral efficiency, the power requirements, and the normalized data rate, as well as the results of comparing the proposed modulation to MPPM and MPAPM.

show abstract

“…Thus, it forms an amplitude-variable version of MPPM [4]. In MPAPM, the amplitudes of the pulses change as well as their positions.…”

Section: Pulse Amplitude Modulation (Pam)mentioning

confidence: 99%

Section: Multipulse Amplitude and Position Modulation (Mpapm)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A New Modified MPPM for High-Speed Wireless Optical Communication Systems

Rouissat¹,

Borsali²,

Chikh-Bled³

2013

ETRI J

View full text Add to dashboard Cite

show abstract

“…Various multilevel modulation schemes using a combination of PPM and pulse-amplitude modulation (PAM) have been proposed in the literature in order to improve the spectralefficiency of pulse-position based modulations [5], [6], [7]. In these works, all combinations of PPM and PAM are considered as symbols, and therefore, the minimum distance between symbols is small.…”

Section: Introductionmentioning

confidence: 99%

Multilevel pulse-position modulation based on balanced incomplete block designs

Noshad

Brandt-Pearce

2012

2012 IEEE Global Communications Conference (GLOBECOM)

View full text Add to dashboard Cite

In this paper, two new modulation schemes using multilevel pulse-position modulation (PPM) for application in unipolar optical wireless systems are presented. Balanced incomplete block designs (BIBD) are used for constructing the symbol alphabets. Each symbol is obtained by combining multiple codewords of a BIBD code. In one scheme the symbols have equal energies, and therefore, no threshold is needed to make a decision on the received signal. The other modulation has better performance yet higher complexity. Since cyclic BIBDs are used for constructing the symbols, the transmitters and receivers have simple structures, and can be implemented using shift registers. These schemes can achieve high spectral-efficiencies, and are therefore suitable for systems with bandlimited sources or highly dispersive channels, where intersymbol interference (ISI) has a significant impact on the performance. We also show that using the same receiver structure, the constellation size can be increased by including the complements of the codewords. The performance of the proposed schemes are compared to other modulation schemes for both LED-based non-dispersive and dispersive freespace optical (FSO) systems.Index Terms-Multilevel modulation, pulse position modulation (PPM), balanced incomplete block design (BIBD), free space optical (FSO) systems, spectral-efficiency

show abstract

Performance analysis of data transmission using LEDs over digital dimming modulation techniques in indoors

Vijayalakshmi

Nesasudha

2022

Opt Quant Electron

View full text Add to dashboard Cite

Multiple pulse amplitude and position modulation for the optical wireless channel

Cited by 16 publications

References 7 publications

A New Modified MPPM for High-Speed Wireless Optical Communication Systems

A New Modified MPPM for High-Speed Wireless Optical Communication Systems

Multilevel pulse-position modulation based on balanced incomplete block designs

Performance analysis of data transmission using LEDs over digital dimming modulation techniques in indoors

Contact Info

Product

Resources

About