scholarly journals Next-Generation Multiple Access Based on NOMA with Power Level Modulation

2022 ◽  
pp. 1-1
Author(s):  
Xinyue Pei ◽  
Yingyang Chen ◽  
Miaowen Wen ◽  
Hua Yu ◽  
Erdal Panayirci ◽  
...  
Keyword(s):  
Multiple Access ◽  
Power Level ◽  
Next Generation

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 WiFi Transmit Power and its Effect on Co-Channel Interference

2021 ◽  
Vol 13 (1) ◽  
pp. 1-17
Author(s):  
Zyanya Cordoba ◽  
Riddhi Rana ◽  
Giovanna Rendon ◽  
Justin Thunell ◽  
Abdelrahman Elleithy
Keyword(s):  
Video Streaming ◽  
Multiple Access ◽  
Power Level ◽  
Control Algorithms ◽  
Transmit Power ◽  
Cooperative Approach ◽  
Channel Interference ◽  
High Bandwidth ◽  
Wireless Environments ◽  
Multiple Clients

The mass adoption of WiFi (IEEE 802.11) technology has increased numbers of devices simultaneously attempting to use high-bandwidth applications such as video streaming in a finite portion of the frequency spectrum. These increasing numbers can be seen in the deployment of highly-dense wireless environments in which performance can be affected due to the intensification of challenges such as co-channel interference (CCI). There are mechanisms in place to try to avoid sources of interference from non-WiFi devices. Still, CCI caused by legitimate WiFi traffic can be equally or even more disruptive, and also though some tools and protocols try to address CCI, these are no longer sufficient for this type of environment. Therefore, this paper investigates the effect of transmit power and direction have on CCI in a high-density environment consisting of multiple access points (APs) and multiple clients. We suggest improvements on publicly- existing documented power control algorithms and techniques by proposing a cooperative approach consisting of the incorporation of feedback from the receiver to the transmitter to allow it to reduce power level where possible, which will minimize the range of CCI for near clients without compromising coverage for the most distant ones.

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
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