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DOI: 10.14569/IJACSA.2020.01104108
PDF

An Improved CoSaMP Multiuser Detection for Uplink Grant Free NOMA System

Author 1: Saifullah Adnan
Author 2: Yuli Fu
Author 3: Jameel Ahmed Bhutto
Author 4: Junejo Naveed Ur Rehman
Author 5: Raja Asif Wagan
Author 6: Abbas Ghulam

International Journal of Advanced Computer Science and Applications(IJACSA), Volume 11 Issue 4, 2020.

  • Abstract and Keywords
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Abstract: Non-Orthogonal Multiple Access (NOMA) is the most prominent technology that enhances massive connectivity and spectral efficiency in 5G cellular communication. It provides services to the multi-users in time, frequency, and code domain with significant power level. Message Passing Algorithm (MPA) detection in a multi-user uplink grant-free system requires user activity information at the receiver that makes it impractical. To circumvent this problem, (MPA) is combined with Compressed Sensing (CS) based detection which not only detects the user activity but also the signal data. However, the Compressive Sampling Matching pursuit (CoSaMP) algorithm uses Zero Forcing (ZF) detector to estimate the signal but its performance degrades with increment in Signal to Noise Ratio (SNR). Therefore, Minimum Mean Square Error (MMSE) detector in CoSaMP algorithm is deployed in this paper that enhances detection accuracy and BER performance. The simulation results validate that the proposed algorithm attains better performance than MPA and conventional CoSaMP algorithm in high SNR.

Keywords: MMSE; multi-user detection; CoSaMP; NOMA; MPA; SNR

Saifullah Adnan, Yuli Fu, Jameel Ahmed Bhutto, Junejo Naveed Ur Rehman, Raja Asif Wagan and Abbas Ghulam, “An Improved CoSaMP Multiuser Detection for Uplink Grant Free NOMA System” International Journal of Advanced Computer Science and Applications(IJACSA), 11(4), 2020. http://dx.doi.org/10.14569/IJACSA.2020.01104108

@article{Adnan2020,
title = {An Improved CoSaMP Multiuser Detection for Uplink Grant Free NOMA System},
journal = {International Journal of Advanced Computer Science and Applications},
doi = {10.14569/IJACSA.2020.01104108},
url = {http://dx.doi.org/10.14569/IJACSA.2020.01104108},
year = {2020},
publisher = {The Science and Information Organization},
volume = {11},
number = {4},
author = {Saifullah Adnan and Yuli Fu and Jameel Ahmed Bhutto and Junejo Naveed Ur Rehman and Raja Asif Wagan and Abbas Ghulam}
}



Copyright Statement: This is an open access article licensed under a Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, even commercially as long as the original work is properly cited.

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