scholarly journals Is NOMA Efficient in Multi-Antenna Networks? A Critical Look at Next Generation Multiple Access Techniques

2021 ◽  
pp. 1-1
Author(s):  
Bruno Clerckx ◽  
Yijie Mao ◽  
Robert Schober ◽  
Eduard Jorswieck ◽  
David J. Love ◽  
...  
Keyword(s):  
Multiple Access ◽  
Next Generation

scholarly journals A review of codebook design methods for sparse code multiple access

2021 ◽  
Vol 22 (2) ◽  
pp. 927
Author(s):  
Syed Aamer Hussain ◽  
Norulhusna Ahmad ◽  
Ibraheem Shayea ◽  
Hazilah Mad Kaidi ◽  
Liza Abdul Latiff ◽  
...  
Keyword(s):  
Bit Error Rate ◽  
Error Rate ◽  
Multiple Access ◽  
Design Methods ◽  
Sparse Code ◽  
Practical Implementation ◽  
Next Generation ◽  
Promising Technique ◽  
Codebook Design ◽  
Optimisation Technique

<span lang="EN-GB">The progressions in telecommunication beyond the 5<sup>th</sup> generation have created a need to improve research drifts. The current 5G study has an important focus on non-orthogonal multiple access (NOMA) technology. sparse code multiple access (SCMA) is a promising technique within NOMA, enhancing the multi-user handling capability of next-generation communication. In the SCMA sphere, codebook designing and optimisation are essential research matters. This study conversed with different codebook design practises existing in the literature, analysing them for numerous parameters, including bit error rate (BER), an optimisation technique, and channel settings. From the analysis, the paper presents the efficiency of different approaches. The article also discusses the prospects and challenges of SCMA optimisation in practical implementation in various domains.</span>

Cost-Effective Upstream Scheme for the Next-Generation PON Based on Interleaved Frequency-Division Multiple Access

2012 ◽  
Vol 24 (9) ◽  
pp. 784-786 ◽  
Author(s):  
Hui Yang ◽  
Juhao Li ◽  
Bangjiang Lin ◽  
Song Jiang ◽  
Yongqi He ◽  
...  
Keyword(s):  
Multiple Access ◽  
Cost Effective ◽  
Frequency Division ◽  
Next Generation

scholarly journals OFDMA Based QoS-Oriented Guarantee Novelty Multiple Access Protocol

2018 ◽  
Vol 36 (3) ◽  
pp. 543-549
Author(s):  
Run Zhou ◽  
Bo Li ◽  
Mao Yang ◽  
Zhongjiang Yan
Keyword(s):  
Multiple Access ◽  
Wireless Local Area Network ◽  
Local Area Network ◽  
Mac Protocol ◽  
Scheduling Algorithm ◽  
Media Access Control ◽  
Proportional Fairness ◽  
Area Network ◽  
Next Generation ◽  
The Next Generation Wlan

The next generation wireless local area network (WLAN) 802.11ax standards committee takes high quality of service(QoS) guarantee as one of important technology goals of the next generation WLAN. As a result of a variety of wireless traffics, so the requirements of the QoS must also be varied. However, the existing media access control(MAC) protocol based on orthogonal frequency division multiple access(OFDMA) can’t support QoS diversification and high requirement well. To solve this problem, this paper presents a QoS-oriented OFDMA MAC for the next generation WLAN. On one hand, for backward compatibility consideration, continue to use four priority traffics of 802.11e in this protocol; on the other hand, the introduction of QoS-oriented priority scheduling algorithm to support future wireless traffic feature which is QoS of diversification and high requirements. Finally, through the simulation, the system effective throughput of the proposed QoS-OFDMA MAC is 57.8% and 59% higher than the OFDMA MAC of the sequential scheduling algorithm and the OFDMA MAC of the proportional fairness algorithm.

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