scholarly journals Opportunistic Adaptive Non-Orthogonal Multiple Access in Multiuser Wireless Systems: Probabilistic User Scheduling and Performance Analysis

2020 ◽  
Vol 19 (9) ◽  
pp. 6065-6082
Author(s):  
Long Yang ◽  
Hai Jiang ◽  
Qiang Ye ◽  
Zhiguo Ding ◽  
Fang Fang ◽  
...  
Keyword(s):  
Performance Analysis ◽  
Multiple Access ◽  
Wireless Systems ◽  
User Scheduling ◽  
And Performance

scholarly journals Erlang's Fixed-Point Approximation for Performance Analysis of HetNets

2012 ◽  
Vol 2012 ◽  
pp. 1-13
Author(s):  
Guozhi Song ◽  
Jigang Wu ◽  
John Schormans ◽  
Laurie Cuthbert
Keyword(s):  
Fixed Point ◽  
Performance Analysis ◽  
Heterogeneous Network ◽  
Multiple Access ◽  
Wireless Systems ◽  
Network System ◽  
Call Blocking ◽  
Analysis And Evaluation ◽  
Point Approximation ◽  
Call Dropping

We consider the analytic modelling of wireless systems with multiple access technologies in the perspective of teletraffic engineering and provide a framework for the performance analysis and evaluation of a wireless HetNet (heterogeneous network) system with both cellular and WLAN access technologies. In particular, an approach with Erlang's fixed-point approximation to calculate the new call blocking and handover call dropping probabilities in such systems is introduced. The model is versatile enough to cover not only cellular/WLAN HetNet systems but other wireless HetNets with difference access technologies in general.

scholarly journals Performance Analysis of Permutation Matrix Zero Cross Correlation Code for SAC-OCDMA Systems

2018 ◽  
Vol 3 (1) ◽  
pp. 15 ◽  
Author(s):  
Kottakkaran Soopy Nisar ◽  
Himali Sarangal ◽  
Simrandeep Singh Thapar ◽  
Mohammed Qutubuddin ◽  
Mohammed Rahmath
Keyword(s):  
Performance Analysis ◽  
Multiple Access ◽  
Cross Correlation ◽  
Multiple Access Interference ◽  
Good Property ◽  
Code Length ◽  
Permutation Matrices ◽  
Design Structure ◽  
Decoder Design ◽  
And Performance

SAC-OCDMA systems are picking up prominence because of their property of low Multiple Access Interference (MAI). This paper deals with zero cross-correlation (ZCC) by considering permutation matrices (PM). The properties and performance analysis of PM-ZCC code are given in this study. The obtained results have shown that PM-ZCC code can achieve better BER for more number of users. In PM-ZCC code, the code length is neither too short nor too long which is the good property of encoder-decoder design structure.

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