Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Monirosharieh Vameghestahbanati"'
Publikováno v:
IEEE Access, Vol 12, Pp 51166-51175 (2024)
We propose a novel approach to Unsourced Random Access (URA) in which the encoding of each user’s message is associated with the user’s location. The presented reception algorithm is able to resolve message collisions and enhance the multiple use
Externí odkaz:
https://doaj.org/article/215f7f6dcf704e48b255c063e7ca4b70
Autor:
Aditya S. Rajasekaran, Monirosharieh Vameghestahbanati, Mohammad Farsi, Halim Yanikomeroglu, Hamid Saeedi
Publikováno v:
IEEE Access, Vol 7, Pp 162803-162817 (2019)
Sparse code multiple access (SCMA) is a non-orthogonal multiple access (NOMA) uplink solution that overloads resource elements (RE's) with more than one user. Given the success of orthogonal frequency division multiplexing (OFDM) systems, SCMA will l
Externí odkaz:
https://doaj.org/article/0bb184386efa4af28b67cf06129782b1
Publikováno v:
IEEE Transactions on Communications. 69:121-132
Designing multidimensional constellations (MdCs) is an integral part of sparse code multiple access (SCMA). Since the optimal maximum a posteriori (MAP) receiver for SCMA is too complex in most applications, one highly popular technique is the near-o
Publikováno v:
IEEE Transactions on Vehicular Technology. 68:10278-10282
Sphere decoding (SD) based detection schemes for sparse code multiple access (SCMA) systems have recently received attention due to their promising features. However, the existing SD-based schemes can only be applied to SCMA systems with constellatio
Publikováno v:
IEEE Communications Surveys & Tutorials. 21:2169-2194
Sparse code multiple access (SCMA) is a class of non-orthogonal multiple access (NOMA) that is proposed to support uplink machine-type communication services. In an SCMA system, designing multidimensional constellation plays an important role in the
Publikováno v:
ICC Workshops
Autor:
Halim Yanikomeroglu, Javad Abdoli, Monirosharieh Vameghestahbanati, Ramy H. Gohary, Ian Marsland
Publikováno v:
WCNC
Sparse code multiple access (SCMA) is a potential non-orthogonal multiple access candidate for future wireless systems. The key performance indicators (KPIs) of uplink SCMA multidimensional constellations (MdCs) that should be considered in their des
Autor:
Ian Marsland, Ramy H. Gohary, Monirosharieh Vameghestahbanati, Ebrahim Bedeer, Halim Yanikomeroglu
Publikováno v:
IEEE Communications Letters. 21:2750-2753
In this paper, we propose a reduced-complexity optimal modified sphere decoding (MSD) detection scheme for SCMA. As SCMA systems are characterized by a number of resource elements (REs) that are less than the number of the supported users, the channe
Publikováno v:
CWIT
Sparse code multiple access (SCMA) is a promising non-orthogonal multiple access technique for future wireless systems. SCMA systems are sensitive to designing multidimensional constellations. It is crucial to employ a constellation that is suitable