A new Transmission and Reception Algorithms for Improving the Performance of SISO/MIMO- OFDM Wireless Communication System

Shahab, Maha Monther; Hardan, Saad Mshhain; Hammoodi, Asmaa Salih

doi:10.25130/tjes.28.3.11

Cited by 7 publications

(6 citation statements)

References 11 publications

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“…Highlights: [1,2]. There has been a significant increase in demand for more connected devices and reliable and high data rate systems worldwide [2][3][4]. By the end of 2025, 39 billion active connections will be used in different applications, such as smart healthcare, smart cities, self-driving cars, and smart energy systems [5,6].…”

Section: Introductionmentioning

confidence: 99%

Coverage Analysis and Proposed Cell Sizes to Enhance the Performance of the 5G Cellular System

Othman,

Alqaradaghi,

Ameen

2024

Tikrit j. eng. sci.

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The global demand for more digital data motivates the evolution of mobile communication systems from 2G and 3G to 4G and 5G to support high data rate applications. The International Mobile Telecommuication-2020 (IMT-2020) defined the minimum technical performance requirements and guidelines for evaluating the 5G mobile cellular system. The New Radio (NR) millimeter wave (mmWave) and massive Multiple Input Multiple Output (mMIMO) antenna systems are technologies used in the 5G cellular system. Therefore, this paper studies the performance of the mmWave system combined with the mMIMO antenna system using the IMT-2020 channel model in a dense urban microenvironment, considering different frequency bands and numbers of elements at the Base Station (BS) antenna array. The performance is evaluated through system-level simulation in terms of Signal power to Noise power Ratio (SNR), Spectral Efficiency (SE), and cell edge user SE. A cell size reduction technique is proposed to meet the target requirements set by IMT-2020. Simulation results showed that the sub. 6 GHz frequency bands achieve the target SE of IMT-2020, while in the mmWave frequency range, the target SE requirement can be achieved using a high number of antenna elements at the BS antenna for some frequency bands.

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Section: Introductionmentioning

confidence: 99%

Coverage Analysis and Proposed Cell Sizes to Enhance the Performance of the 5G Cellular System

Othman,

Alqaradaghi,

Ameen

2024

Tikrit j. eng. sci.

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“…Fifth-generation (5G) networks have attracted numerous studies and significant development in response to the recent exponential rise of mobile data traffic over gradually constrained capacity and spectrum [1]. The need for dependable, high-speed data transfer has increased dramatically in recent years, making the development of a quick and spectrally efficient wireless communication system necessary [2]. To overcome these limitations, NOMA has recently been proposed [3,4] as a potential solution for significant performance improvement and effective spectrum usage.…”

Section: Introductionmentioning

confidence: 99%

Performance Analysis of Cooperative NOMA for Different Power Allocation Strategies

Saeed,

Sileh

2023

Tikrit j. eng. sci.

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Cooperative None Orthogonal Multiple Access (C-NOMA) is a promising approach for 5G and beyond communication networks. Users will benefit from the full bandwidth of the channel without time constraints. NOMA’s features are incomplete without efficient power allocation that ensures power distribution among users fairly. Integrating power management (allocation) with Cooperative-NOMA (C-NOMA) may improve the system metrics. In addition, a physical layer security (PLS) is added to make the process of sending and receiving safe, and the system works in an integrated manner, preventing any interrupting or eavesdropping inside or outside the network. This paper demonstrates the user and channel performance of C-NOMA with Amplify-and-forward (AF) and Decode-and-forward (DF) approaches. The analysis is performed by varying the power allocation techniques to derive the best system configurations. The simulation results confirmed the analytic findings and showed that the proposed system outperforms orthogonal multiple access (OMA), conventional NOMA, and conventional cooperative NOMA, enhancing the performance metrics in terms of throughput, sum rate, and outage probability. The bit-error-rate (BER) of the far user can be identical to that of the near user if power allocation is properly set. All techniques excelled except for the fixed power allocation, which had the same BER. The Channel capacity and outage probability were also considered. A slight variation in the channel capacity in all the experiments for different numbers of users was found. The generalized power allocation for AF and DF models had the optimum channel capacity close to 14 bps/Hz. Moreover, far users always had a higher outage probability than near users and channels, and generalized power allocation was the highest outage probability technique when the transmit power was close to (4 dB).

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“…Nowadays, MIMO OFDM communication system has been widely applied because of it supports higher data rate and higher reliability than single antenna communication system [1][2][3] at present. As we all know, the detection algorithms mainly include linear detection methods and nonlinear detection methods [4].Linear detection algorithms such as zero-forcing ( ZF ) detection algorithm and minimum mean square error ( MMSE ) detection algorithm.The ZF algorithm perfectly removes interference components from the received signal.…”

Section: Introductionmentioning

confidence: 99%

Modifed SIC Algorithm based on Lattice Reduction Aided for MIMO OFDM Detection

Liu¹,

Fan²,

Cheng³

et al. 2022

Preprint

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The lattice reduction aided(LRA) algorithm has attracted widely attention of researchers in MIMO systems because of its low complexity to achieve full diversity. However, most lattice reduction auxiliary algorithms do not directly improve system performance. In this paper, a modified lattice reduction successive interference cancellation (SIC) algorithm is proposed for MIMO OFDM system mild changing the complexity of LRA algorithm. At present, the MMSE SQRD algorithm has the problem of regarding too much useful signals as the residual interference which cannot be cancelled by successive interference cancellation. Since the diagonal elements of useful signals are non-zero, the components of the symbols to be detected still present in the interference term, treating all the signals as interference will be resulted in performance loss. To solve this problem, the modified matrix is proposed.by moving this symbol component into the signal term, the proposed algorithm can provide the better performance than MMSE SQRD algorithm. The analysis shows that the LRA-MMSE-SIC algorithm of proposed in this paper significantly improves the system performance with mild increasing the complexity. The simulation results show that the performance of the proposed algorithm is improved by 1dB and 8dB compared with the comparison algorithm when the bit error rate is 10−3.

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A new Transmission and Reception Algorithms for Improving the Performance of SISO/MIMO- OFDM Wireless Communication System

Cited by 7 publications

References 11 publications

Coverage Analysis and Proposed Cell Sizes to Enhance the Performance of the 5G Cellular System

Coverage Analysis and Proposed Cell Sizes to Enhance the Performance of the 5G Cellular System

Performance Analysis of Cooperative NOMA for Different Power Allocation Strategies

Modifed SIC Algorithm based on Lattice Reduction Aided for MIMO OFDM Detection

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