On Performance Comparison of Multi-Antenna HD-NOMA, SCMA, and PD-NOMA Schemes
نویسندگان
چکیده
In this letter, we study the uplink channel throughput performance of a proposed novel multiple-antenna hybrid-domain non-orthogonal multiple access (MA-HD-NOMA) scheme. This scheme combines conventional sparse code (SCMA) and power-domain NOMA (PD-NOMA) schemes in order to increase number users served as compared uses antennas at base station. To end, joint resource allocation problem for MA-HD-NOMA is formulated that maximizes sum rate entire system. For comprehensive comparison, problems multi-antenna SCMA (MA-SCMA) PD-NOMA (MA-PD-NOMA) with same overloading factor are well. Each mixed-integer non-convex program, hence, apply successive convex approximation (SCA)- reweighted ? 1 minimization-based approaches obtain rapidly converging solutions. Numerical results reveal has superior MA-SCMA MA-PD-NOMA.
منابع مشابه
Comparison Study between NOMA and SCMA
In this paper, the performance and system complexity of the candidate multiple access (MA) techniques for the next generation of cellular systems, namely, non-orthogonal multiple access (NOMA) (in this paper, we consider power domain MA as NOMA) and sparse code multiple access (SCMA), are investigated. To this end, for each MA technique, a resource allocation problem considering heterogeneous c...
متن کاملRate-Splitting for Downlink Multi-User Multi-Antenna Systems: Bridging NOMA and Conventional Linear Precoding
Space-Division Multiple Access (SDMA) utilizes linear precoding to separate users in the spatial domain and relies on fully treating any residual multi-user interference as noise. Non-Orthogonal Multiple Access (NOMA) uses linearly precoded superposition coding with successive interference cancellation (SIC) to superpose users in the power domain and relies on user grouping and ordering to enfo...
متن کاملResource Optimization in Multi-cell NOMA
Optimizing non-orthogonal multiple access (NOMA) in multi-cell scenarios is much more challenging than the singlecell case because inter-cell interference must be considered. Most papers addressing NOMA consider a single cell. We take a significant step of analyzing NOMA in multi-cell scenarios. We explore the potential of NOMA networks in achieving optimal resource utilization with arbitrary t...
متن کاملAntenna Selection in Full-Duplex Cooperative NOMA Systems
We investigate the problem of antenna selection (AS) in full-duplex (FD) cooperative non-orthogonal multiple access (NOMA) systems, where a multi-antenna FD relay assists transmission from a multi-antenna base station (BS) to a far user, while at the same, the BS transmits to a near user. Specifically, based on the end-to-end signal-to-interferenceplus-noise ratio at the near and far users, two...
متن کاملCoordinated Multi-Point (CoMP) Transmission in Downlink Multi-cell NOMA Systems: Models and Spectral Efficiency Performance
We outline a general framework to use coordinated multi-point (CoMP) transmission technology in downlink multicell non-orthogonal multiple access (NOMA) systems considering distributed power allocation at each cell. In this framework, CoMP transmission is used for users experiencing strong receivesignals from multiple cells while each cell adopts NOMA for resource allocation to its active users...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: IEEE Wireless Communications Letters
سال: 2021
ISSN: ['2162-2337', '2162-2345']
DOI: https://doi.org/10.1109/lwc.2020.3041601