Throughput and Range Performance Investigation for IEEE 802.11a, 802.11n and 802.11ac Technologies in an On-Campus Heterogeneous Network Environment

Dhawankar, Piyush; Minh, Hoa Le; Aslam, Nauman

doi:10.1109/csndsp.2018.8471865

Cited by 5 publications

(3 citation statements)

References 17 publications

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“…Аналіз відношень між ймовірністю помилки на біт, функцією кратності помилок і вектором топології помилок для різних значень n дозволив виявити ряд закономірностей [10,11]. Перше твердження полягає в тому, що при визначеному значенні довжини кодової послідовності одному і тому ж значенню ймовірності помилки на біт на виході дискретного каналу відповідають різні топології помилок на множині n-послідовностей помилок.…”

Section: мета роботиunclassified

Estimation of Probabilistic and Statistical Characteristics of the Informational State of a Communication Channel

Кrylova,

Kotko

2023

Вісник НТУ "ХПІ"

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The methods for determining the informational state of a communication channel based on the assessment of probabilistic and statistical characteristics of errors at the channel output are presented. Adaptive information protection methods in digital communication systems, where encoder parameters change depending on the channel state, require the use of network quality control methods based on determining the statistical characteristics of the channel. It is shown that the bit error probability in the channel is constant for the presented error generation process and is independent of the method of dividing information into code blocks. The methods for assessing the statistical characteristics of the channel are based on the topological representation of error generation processes over the length of code blocks. It is demonstrated that, with a fixed code sequence length and a constant bit error probability at the output of the information channel, different error distributions correspond to sets of n-sequences. With a known number of states in the likelihood transition matrix, calculation of observation intervals for counting erroneous blocks is proposed. The presented method of researching statistical characteristics, based on the assumption of error independence, allows for the development of algorithms and procedures for assessing the state of discrete communication channels. The evaluation of potential bounds and statistical characteristics for the decoding error probability enables establishing a connection between the topological characteristics of error sequence partitioning and code parameters. The work confirms that the proposed method allows the synthesis of algorithms for determining code parameters, whose numerical values are determined based on minimizing potential decoding error probabilities.

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Section: мета роботиunclassified

Estimation of Probabilistic and Statistical Characteristics of the Informational State of a Communication Channel

Кrylova,

Kotko

2023

Вісник НТУ "ХПІ"

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“…In addition, fluctuations are present when examining the channel bandwidth dependences based on MCS schema parameters. Experimental studies into the throughput of the 802.11ас, 802.11, and 802.11а standards with the application of various configurations and protocols were reported in paper [9]. It was found that theoretical throughput is unattainable when using MIMO technology because of the existence of various types of impact factors.…”

Section: Constructing the Mathematical Ratios Between The Basic Parameters Of The 80211 Standard Wireless Channel And The Level Of Fluctumentioning

confidence: 99%

Devising a technique to evaluate fluctuations in the main parameters of a wireless channel of the 802.11 standard

Mykhalevskiy

2020

EEJET

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which makes it possible to take into consideration the maximum possible number of factors of influence based on a statistical relation between the main channel parameters. However, the issue of assessing the fluctuations themselves is given quite a little attention, and their evaluation requires a significant number of observation periods and additional statistical processing of the results. In addition, observations should be carried out for different standards and, to improve the reliability and take into consideration all factors of influence, the time between observation periods may cover days, weeks, and months. Therefore, it is a relevant task to find mathematical ratios that could produce, based on them, such an assessment of the level of fluctuations in the basic channel parameters that would be similar to that obtained from empirical studies at a lower time cost. Literature review and problem statementA study reported in work [5] shows that obtaining access to the Internet requires that a signal level should not be lower than 60 dBm. With an increase in the channel length and the presence of architectural obstacles, the

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“…However, the MAC layer also requires to be updated to ensure that the upgrades at the PHY layer are effective. The principal upgrades in the MAC layer are the block acknowledgement (BA) and frame aggregation [4,7,8]. This study focuses on frame aggregation.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Techniques for VoIP Frame Aggregation Over A-MPDU 802.11n

Kharma¹,

Hussein²,

Taweel³

et al. 2022

Intelligent Automation &Amp; Soft Computing

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The widespread and desirable features of IP and IEEE 802.11 networks have made these technologies a suitable medium for carrying voice over IP (VoIP). However, a bandwidth (BW) exploitation obstacle emerges when 802.11 networks are used to carry VoIP traffic. This BW exploitation obstacle is caused by the large 80-byte preamble size of the VoIP packet and a waiting time of 765 μs for each layer 2 VoIP frame. As a solution, IEEE 802.11n was consequently designed with a built-in layer 2 frame aggregation feature, but the adverse impact on the VoIP performance still needed to be addressed. Subsequent VoIP research has proposed numerous enhancements to the built-in IEEE 802.11n aggregation techniques. In this study, we analyse and propose enhancements to the BW exploitation and VoIP performance over IEEE 802.11n. We also recommend new techniques to enhance VoIP performance via IEEE 802.11n frame aggregation implementations. Furthermore, we contribute guidelines for creating a robust, suitable, and reliable aggregation technique for VoIP over the 802.11n standard.

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Throughput and Range Performance Investigation for IEEE 802.11a, 802.11n and 802.11ac Technologies in an On-Campus Heterogeneous Network Environment

Cited by 5 publications

References 17 publications

Estimation of Probabilistic and Statistical Characteristics of the Informational State of a Communication Channel

Estimation of Probabilistic and Statistical Characteristics of the Informational State of a Communication Channel

Devising a technique to evaluate fluctuations in the main parameters of a wireless channel of the 802.11 standard

Investigation of Techniques for VoIP Frame Aggregation Over A-MPDU 802.11n

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