Performance Analysis of Rectangular QAM With SC Receiver Over Nakagami- &lt;inline-formula&gt; &lt;tex-math notation="TeX"&gt;$m$&lt;/tex-math&gt;&lt;/inline-formula&gt; Fading Channels

Dixit, Dharmendra; Sahu, P. R.

doi:10.1109/lcomm.2014.2315616

Cited by 48 publications

(29 citation statements)

References 11 publications

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“…In the literature, average SER (ASER) analysis of various higher order QAM schemes over different fading conditions for various relay or non-relay systems have been considered [1]- [3], [21]- [25]. In [1], generalized BER expression for the regular, irregular, and sub-optimum triangular QAM (TQAM) schemes is derived and detection complexity is compared between them.…”

Section: A Previous Workmentioning

confidence: 99%

“…Nakagami-m fading channels with both integer and non-integer fading parameters is considered in presence of imperfect CSI and non-linear power amplifier at the relay, and analytical expressions of outage probability, asymptotic outage probability, and ASER of HQAM, RQAM, and XQAM schemes are derived. In [21], for a multi-branch non-relay system, exact ASER expressions of RQAM, differentially encoded QPSK (De-QPSK) and π/4-QPSK over i.n.i.d. Nakagami-m fading channels are derived.…”

Section: A Previous Workmentioning

confidence: 99%

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On the Performance Analysis of Higher Order QAM Schemes Over Mixed RF/FSO Systems

Singya

Kumar

Bhatia

et al. 2020

IEEE Trans. Veh. Technol.

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In this work, the performance of a dual-hop variable gain amplify-and-forward (AF) mixed radio frequency (RF)/free space optics (FSO) system is analyzed in details. As variable gain AF relay network is considered, processing delay results in outdated channel state information (CSI) during amplification at the relay. For general applicability, the RF link is modeled with the generalized Nakagami-m fading. The FSO link is modeled with the Gamma-Gamma distribution which is affected with the atmospheric turbulence and pointing error impairments, and both the intensity modulation with direct detection (IM/DD) and heterodyne detection are employed at the FSO receiver. In this context, analytical expressions of outage probability and ergodic capacity are derived in terms of Meijer-G function and extended generalized bivariate Meijer-G function. For diversity order, asymptotic outage probability expression is also derived. Further, cumulative distribution function based generalized average symbol error rate expressions for various quadrature amplitude modulation (QAM) schemes such as hexagonal QAM, rectangular QAM, and cross QAM are derived in terms of Meijer-G function. Furthermore, a detailed comparative study of various modulation schemes is presented and the impact of pointing error, atmospheric turbulence, outdated CSI, and Nakagami-m parameter are highlighted on the system performance. Finally, all the analytical results are verified through Monte-Carlo simulations.

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Section: A Previous Workmentioning

confidence: 99%

Section: A Previous Workmentioning

confidence: 99%

On the Performance Analysis of Higher Order QAM Schemes Over Mixed RF/FSO Systems

Singya

Kumar

Bhatia

et al. 2020

IEEE Trans. Veh. Technol.

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“…Rectangular QAM (RQAM), cross QAM (XQAM) and square QAM (SQAM) are popular QAM methods that are used in high speed communications. RQAM is considered as a generic modulation type and it has practical applications in the field of high speed mobile communications and microwave communications [1].…”

Section: Introductionmentioning

confidence: 99%

An Approximate Error Expression for RQAM Scheme under α-η-µ Fading Conditions

Kapucu

2019

Balkan Journal of Electrical and Computer Engineering

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In this paper, average symbol error rate (ASER) performance of rectangular quadrature amplitude modulation (RQAM) scheme is analyzed over α-η-µ fading channels. First, an ASER expression is derived based on Chernoff approximation of Gaussian Q-function. Then, an asymptotic ASER formula is obtained for analyzing system behavior at high signal-to-noise ratio (SNR) regime. The ASER performance is presented for different modulation levels and fading parameter values. In addition, relative truncation error (RTE) is illustrated in order to determine how many terms are needed for the computation of proposed expression. It is shown that analytical results are in close agreement with exact results.

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“…115 Further, considerable work on the average symbol error rate (ASER) performance of various QAM schemes for different wireless relaying or non-relaying systems over various fading scenarios has been reported in the literature. In [24], for a non-relaying multi-branch selection combining (SC) receiver system, exact ASER expressions of RQAM, π/4-QPSK and differentially encoded QPSK 120 (De-QPSK) are derived over i.n.i.d. Nakagami-m fading channels.…”

Section: Introductionmentioning

confidence: 99%

“…squared QAM 50 (SQAM), rectangular QAM (RQAM), cross QAM (XQAM) and hexagonal QAM (HQAM)) has gained considerable interest in present wireless communication systems for instance LTE-Advanced and in future 5G systems due to its high power and bandwidth efficiency. RQAM is a versatile modulation scheme as it includes SQAM, orthogonal binary frequency shift keying (OBFSK), quadra-55 ture phase shift keying (QPSK) and multi-level amplitude shift keying (ASK) as its special cases [24]. However, RQAM is not a good choice for odd number of constellation points, and an optimum XQAM constellation is preferred due to its lower peak and average power.…”

mentioning

confidence: 99%

Performance analysis of OFDM based 3-hop AF relaying network over mixed Rician/Rayleigh fading channels

Singya

Kumar

Bhatia

et al. 2018

AEU - International Journal of Electronics and Communications

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Performance Analysis of Rectangular QAM With SC Receiver Over Nakagami- <inline-formula> <tex-math notation="TeX">$m$</tex-math></inline-formula> Fading Channels

Cited by 48 publications

References 11 publications

On the Performance Analysis of Higher Order QAM Schemes Over Mixed RF/FSO Systems

On the Performance Analysis of Higher Order QAM Schemes Over Mixed RF/FSO Systems

An Approximate Error Expression for RQAM Scheme under α-η-µ Fading Conditions

Performance analysis of OFDM based 3-hop AF relaying network over mixed Rician/Rayleigh fading channels

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