Performance analysis of QAM schemes for non-regenerative cooperative MIMO network with transmit antenna selection

Shaik, Parvez; Singya, Praveen Kumar; Bhatia, Vimal

doi:10.1016/j.aeue.2019.05.012

Cited by 37 publications

(19 citation statements)

References 31 publications

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“…Data statistics are carried out during the simulation process. In order to compare the complexity of the two algorithms more intuitively, the Computational Complexity Reduction Ratio (CCRR) is used to measure the complexity [38], which is defined as Formula (11). Figure 7 is a comparison of the CCRR of the T-Max-log-MPA algorithm under different E b /N o , the CCRR of the original MPA algorithm is 1.…”

Section: Complexity Comparisonsmentioning

confidence: 99%

“…In addition, 5G communication technology also has 25 times the throughput and more than 10 times the resource utilization of 4G [8,9]. Sparse Code Multiple Access (SCMA) is one of the 5G candidate technologies, and it is the extension and promotion of the Low Density Spread Spectrum (LDS) [10,11]. In the SCMA system, the process of Quadrature Amplitude Modulation (QAM) [12] mapping and the spread spectrum are integrated to form a SCMA codebook [13,14], which brings shape gain to the SCMA coding process [15,16].…”

Section: Introductionmentioning

confidence: 99%

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A Threshold-Based Max-log-MPA Low Complexity Multiuser Detection Algorithm

Zhang

Zhao

et al. 2020

Sensors

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Sparse Code Multiple Access (SCMA) technology is a new multiple access scheme based on non-orthogonal spread spectrum technology, which was proposed by Huawei in 2014. In the algorithm application of this technology, the original Message Passing Algorithm (MPA) has slow convergence speed and high algorithm complexity. The threshold-based MPA has a high Bit Error Ratio (BER) when the threshold is low. In the Maximum logarithm Message Passing Algorithm (Max-log-MPA), the approximation method is used, which will cause some messages to be lost and the detection performance to be poor. Therefore, in order to solve the above problems, a Threshold-Based Max-log-MPA (T-Max-log-MPA) low complexity multiuser detection algorithm is proposed in this paper. The Maximum logarithm (Max-log) algorithm is combined with threshold setting, and the stability of user nodes is considered as a necessary condition for decision in the algorithm. Before message updating, the user information nodes are judged whether the necessary conditions for the stability of the user node have been met, and then the threshold is determined. Only users who meet the threshold condition and pass the necessary condition of user node stability can be decoded in advance. In the whole process, the logarithm domain MPA algorithm is used to convert an exp operation and a multiplication operation into a maximum value and addition operation. The simulation results show that the proposed algorithm can effectively reduce the computational complexity while ensuring the BER, and with the increase of signal-to-noise ratio, the effect of the Computational Complexity Reduction Ratio (CCRR) is more obvious.

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Section: Complexity Comparisonsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Threshold-Based Max-log-MPA Low Complexity Multiuser Detection Algorithm

Zhang

Zhao

et al. 2020

Sensors

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“…Notable efforts have been made to work the error performance of various systems employing QAM schemes for different fading channels 19‐35 . In Reference 19, the authors presented error performance for maximal ratio combining (MRC) receiver with cross‐QAM (XQAM) techniques over

η - μ

composite fading channels.…”

Section: Introductionmentioning

confidence: 99%

Different QAM schemes analyses for ARS fading channels

Bilim

2020

Trans Emerging Tel Tech

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Quadrature amplitude modulation (QAM) techniques are employed for various communication systems due to its advantages such as efficient bandwidth and high rate. In this paper, the average symbol error rate (ASER) performances of single‐input single‐output networks are investigated to address the different QAM schemes combined use. The link in the network experiences the alternate Rician shadowed (ARS) fading which has the benefit of contributing left or right‐sided bimodality. Four different QAM schemes such as rectangular QAM, cross‐QAM, hexagonal QAM, and square QAM are used for the considered network. Under these assumptions, new closed‐form expressions for the ASER in terms of elementary functions and Meijer's G functions are derived. The derived ASER expressions are obtained by employing the Prony approximation with two terms which has fractional coefficients to provide precise results. Based on the second‐order exponential function approximation for Gaussian Q‐function, the ASER expressions of the considered system are also proposed. Additionally, we provide other important engineering insights based on the high signal‐to‐noise‐ratio analysis of the ASER performance over ARS fading channels. Finally, all our theoretical results are confirmed with simulations.

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“…SCMA has the characteristics of large capacity, low delay, multi-connection and strong anti-multipath ability [18][19][20], which can better meet the needs of 5G for higher spectral efficiency [21,22]. SCMA technology is an improvement over the basis of low density multiple access technology; its application greatly improves the performance of multi-user access and detection [23,24]. In order to get the codebook, SCMA technology combines spread spectrum technology and constellation mapping technology to realize the operations of displacement, rotation and conjugation of high-dimensional constellation [25][26][27][28][29].…”

Section: Introductionmentioning

confidence: 99%

A Multi-Node Detection Algorithm Based on Serial and Threshold in Intelligent Sensor Networks

Zhang

Zhao

et al. 2020

Sensors

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With the continuous progress of science and technology, intelligent wireless sensor network (IWSN) communication has become indispensable in its role in production and life because of its convenient network settings and flexible use. However, with the widespread availability of intelligent wireless sensor networks, the use of many wireless sensor nodes constitutes a multi-node wireless communication system, which turns the accuracy and low complexity of multi-node detection in sensor networks into a problem. Although the traditional algorithm has excellent performance, it cannot give consideration to both accuracy and complexity. Therefore, a maximum logarithm message passing algorithm based on serial and threshold (S-T-Max-log-MPA) for multi-mode detection in IWSN is proposed in this paper. In this algorithm, the threshold is used to determine the necessary conditions of sensor node stability first, and then the sensor node information updating is integrated into the resource node information updating, so that the system can maintain good accuracy, performance, and change the situation of poor system accuracy at low threshold. Compared with the traditional algorithm, the proposed algorithm significantly changes the algorithm complexity reduction rate of the system multi-node detection. Simulation results show that the algorithm has a good balance between accuracy and complexity reduction rate.

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Performance analysis of QAM schemes for non-regenerative cooperative MIMO network with transmit antenna selection

Cited by 37 publications

References 31 publications

A Threshold-Based Max-log-MPA Low Complexity Multiuser Detection Algorithm

A Threshold-Based Max-log-MPA Low Complexity Multiuser Detection Algorithm

Different QAM schemes analyses for ARS fading channels

A Multi-Node Detection Algorithm Based on Serial and Threshold in Intelligent Sensor Networks

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