Improvement Ivestigation of the TCP Algorithms With Avoiding Network Congestion Based on OPNET

Noman, Haeeder Munther; Abdulrazzaq, Ali Abdulwahhab; Kareem, Marwah M.; Ali, Adnan Hussein

doi:10.1088/1757-899x/518/5/052025

Cited by 16 publications

(10 citation statements)

References 2 publications

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“…RoF technology can be used for dead zone cover, everywhere the wireless signal transmission is impossible to distribute due to the wave propagation characteristics such as mountains undergrounds, tunnels, and isolated places [13]. Also, RoF technology can be considered for distributed antennas system (DAS) to support mobility users and to cover the stadium zones.…”

Section: Figure 1 Rof Block Diagrammentioning

confidence: 99%

Analyzing the BER and optical fiber length performances in OFDM RoF links

Kareem¹,

Lafta

Hashim

et al. 2021

IJEECS

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Radio over fiber (RoF) can be assessed as a system of most convenient combination of optical fiber and radio signals. The technique of orthogonal frequency division multiplexing (OFDM) considers as a data distribution over a huge number of carriers having spaced from each other with specific frequencies at overlap bands. Hence incorporates OFDM with the optical fiber, OFDM-RoF system can be increased the modulation RF access capacity besides high-speed data transmission, it considers a broadband communication trend of the current and future applications specifically for 5G mobile. The optical network scenarios of various RF can be model with optisystem software, and OFDM in addition to use a section of the orthogonal multiplex frequency of 16-quadrature amplitude modulation (QAM) RF modulating signal. In the optical domain, Mach-Zehnder modulator (MZM) optical modulators are used to carry out different results with different fiber lengths. An OFDM-RoF wireless communication system considers as advanced data rate transmission achievement by minimum delays. The essential goal of this paper is for identifying the minimum bit error rate (BER) for the 16-QAM modulation with varying fiber length. The OFDM-RoF system can be able for realizing a fiber length 100 km with a restricted decreasing in the received power so that the constellation noise is became greater despite of applying electrical amplification and optical amplification.

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Section: Figure 1 Rof Block Diagrammentioning

confidence: 99%

Analyzing the BER and optical fiber length performances in OFDM RoF links

Kareem¹,

Lafta

Hashim

et al. 2021

IJEECS

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“…Routes between source and destination are maintained by Optimized Link State Routing Protocol (OLSR) and Destined Sequenced Distance Vector (DSDV) irrespective of data traffic, unlike proactive and reactive routing protocols [19]. The need for locating routes for each message is avoided by this strategy, while efficiency is increased when the nodes are relatively stationery and traffic relatively heavy [20]. The use of reactive and proactive techniques is employed by hybrid routing protocol.…”

Section: Manet Routing Protocolsmentioning

confidence: 99%

Performance investigations of internet protocol versions for mobile Ad-hoc network based on qualnet simulator

Majeed

Habeeb

Al‐Azzawi

2021

IJEECS

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<span>A mobile ad hoc network (MANET) can be seen as a mobile nodes collection having no support of fixed infrastructure and therefore its communication is totally dependent on the network's nodes. As a result of the mobility of nodes, rapid and unpredictable changes occur within the mobile ad hoc network (MANET) arrangements. Therefore, this makes the analysis of routing protocols very crucial so as to enhance efficient communication between the wireless nodes. IPv4 and IpV6 within the MANET is another issue of concern. IPv4 which has been traditionally used for ages and IPv6; predicted to be the forthcoming network architecture model is investigated because of its protection which has been improved as well as its enormous address space provision. The analysis on Ad Hoc On Demand Vector and Dynamic Manet On Demand routing protocols are performed using Qualnet simulator under the IPv4 and IPv6 standards. A thorough evaluation of the usability and functionality of the simulator software is carried out. The metrics for performance are; Throughput, End-to-End Delay and Average jitter. Afterwards, analyses and summary of the results is conducted and summarized in order to make available an assessment of their performances.</span>

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“…The discussions in this section focused on the optical OFDM down-link from the signal BRPS-generated signal via the reception of the signal at the end-user. However, this system differed from the previous modeling system by using the OFDM as a multicarrier modulation technique to process the signal rather than using only the QAM scheme obtainable in the traditional optical systems [26,27]. Therefore, the following are the purpose for optical OFDM-RoF integration with wireless technology: -The cost-effectiveness of the direct optoelectronic demodulation related to the RoF utilized for wireless communication.…”

Section: Antennamentioning

confidence: 99%

Analysis of a framework implementation of the transceiver performances for integrating optical technologies and wireless LAN based on OFDM-RoF

Ali¹,

Farhood²,

Naji³

2020

IJECE

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The greatest advantages of optical fibers are the possibility of extending data rate transmission and propagation distances. Being a multi-carrier technique, the orthogonal frequency division multiplexing (OFDM) can be applicable in hybrid optical-wireless systems design owing to its best spectral efficiency for the interferences of radio frequency (RF) and minor multi-path distortion. An optical OFDM-RoF-based wireless local area network (W-LAN) system has been studied and evaluated in this work. The outline for integrating an optical technology and wireless in a single system was provided with the existence of OFDM-RoF technology and the microstrip patch antenna; these were applied in the Optisystem communication tool. The design of the proposed OFDM-RoF system is aimed at supporting mm-wave services and multi-standard operations. The proposed system can operate on different RF bands using different modulation schemes like 4,16 and 64QAM, that may be associated to OFDM and multidata rates up to 5 Gbps. The results demonstrate the robustness of the integrated optical wireless link in propagating OFDM-RoF-based WLAN signals across optical fibers.

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Improvement Ivestigation of the TCP Algorithms With Avoiding Network Congestion Based on OPNET

Cited by 16 publications

References 2 publications

Analyzing the BER and optical fiber length performances in OFDM RoF links

Analyzing the BER and optical fiber length performances in OFDM RoF links

Performance investigations of internet protocol versions for mobile Ad-hoc network based on qualnet simulator

Analysis of a framework implementation of the transceiver performances for integrating optical technologies and wireless LAN based on OFDM-RoF

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