Cross-Layer Combining of Adaptive Modulation and Truncated ARQ in Multichannel Beamforming MIMO Systems

Drajić, Dejan; Brkic, Srdan; Ivaniš, Predrag

doi:10.13164/re.2015.1050

Cited by 2 publications

(3 citation statements)

References 21 publications

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“…For example, truncated HARQ is added on top of AMC (adaptive modulation and coding) where the type of modulation and modes of HARQ are changed to adapt to changes in the channel conditions. Studies have shown that the combination of AMC and truncated ARQ makes the systems more robust and also applicable to time limited applications (Liu et al, 2004;Kang et al, 2010;Yang et al, 2012;Ivanis et al, 2015). While AMC and truncated HARQ can separately be employed to deal with varying channel conditions, some studies have been carried out to compare the effects of AMC and truncated HARQ, showing that AMC yields improved performance in noisy channels (Sassioui et al, 2017).…”

Section: Resultsmentioning

confidence: 99%

“…al., 2012). Attempts have also been taken to apply the cross-layer combining of truncated-ARQ and adaptive modulation to multichannel beam-forming MIMO systems (Ivanis et al, 2015), and in cooperative relay networks employing network coding (Yangi et al, 2016). The main drive in these studies was to show that truncated ARQ/HARQ can lead to improved performance in various types of systems, as well as to establish methods of analysing the truncated ARQ/HARQ systems.…”

Section: Introductionmentioning

confidence: 99%

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The analysis of truncated ARQ and HARQ schemes using transition diagrams

Kundaeli¹

2020

Int. J. Eng. Sci. Tech

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In digital communication systems, ARQ and HARQ schemes are employed in order to ensure efficient transmission of information and utilisation of the channel by retransmitting information that has not being received correctly at the receiver. In some applications, however, such as real-time services, the quality of information is degraded if too many retransmission trials are employed for each unit of erroneously received information. The retransmissions are therefore limited leading to truncated ARQ and HARQ schemes. In this study we develop a new method for deriving the expressions for the throughput efficiencies of truncated ARQ and HARQ schemes and investigate how the efficiencies vary with the number of allowed retransmissions. Keywords: ARQ, HARQ, Throughput Efficiency, Truncated ARQ.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The analysis of truncated ARQ and HARQ schemes using transition diagrams

Kundaeli¹

2020

Int. J. Eng. Sci. Tech

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“…-The analysis results would provide useful insight on the design of 3-D multiple-input-multiple-output (MIMO) beamforming technology and smart antenna array [17][18][19] for fifth generation (5G) networks.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Three-Dimensional Spatial Selectivity for Rician Channel

Du¹,

Zeng²,

Jian³

et al. 2018

RADIOENGINEERING

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The spatial selectivity of multipath fading determines the spatial diversity strategy to increase the performance of the communication system. This paper analyses the three-dimensional (3-D) spatial selectivity of Rician channel to strive to alleviate the current lack of analytical studies. A 3-D multipath angular power density (APD) model for Rician channel is proposed. Analytical expressions of the 3-D multipath shape factors are given based on the APD using the multipath shape factors theory. Finally, some important spatial fading statistics like the fading rate variance, level crossing rate (LCR), average fade duration (AFD), spatial correlation and coherence distance are derived, and the analysis on the impact of 3-D spatial angular directions on these spatial fading statistics is presented through simulations. The results would provide useful insight on quantifying and simplifying the analysis and design of the 3-D multiple input multiple output (MIMO) beamforming technology and smart antenna arrays.

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Cross-Layer Combining of Adaptive Modulation and Truncated ARQ in Multichannel Beamforming MIMO Systems

Abstract: Abstract. In this study the authors provide a cross-layer design of multiple-input-multiple-output (MIMO) systems

Cited by 2 publications

References 21 publications

The analysis of truncated ARQ and HARQ schemes using transition diagrams

The analysis of truncated ARQ and HARQ schemes using transition diagrams

Analysis of Three-Dimensional Spatial Selectivity for Rician Channel

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