A reduced complexity noma map receiver for wideband mimo channels

Download

index.pdf

Date

2020-10

Author

Şatana, Hasan Aykut

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

630
views

98
downloads

Multiple input and multiple output (MIMO) technology and non-orthogonal multiple access (NOMA) are two important concepts for the next generation communication systems since they bring many advantages over conventional orthogonal systems. While there are numerous research over MIMO and power domain NOMA integration, the combination of MIMO and practical code domain NOMA schemes has not been investigated much in the literature, which is the subject of this thesis. In this study, we propose a generic maximum a posteriori (MAP) receiver based on the Ungerboeck observations from multiuser, where sparse code multiple access (SCMA) and multi-user shared access (MUSA) can be directly adapted. The proposed technique utilizes channel division multiple access (ChDMA) and code domain NOMA schemes on which a novel receiver architecture is structured at significantly reduced complexity. It outperforms conventional MMSE-SIC methods with very limited number of radio frequency (RF) chains and lower complexity. In addition, we provide an analysis in terms of bit-error rate and achievable information rate (AIR) showing mismatched decoding capacity under different code length and overloading scenarios for uplink transmission where flexible structure of MUSA is exploited.

Subject Keywords

NOMA, MIMO, Equalization, Multi-User Detection, MUSA, SCMA

URI

https://hdl.handle.net/11511/69234

Collections

Graduate School of Natural and Applied Sciences, Thesis

Suggestions

OpenMETU
Core

An Efficient Constrained mm-Wave Hybrid Massive MIMO Beamforming for JSDM based NOMA Bayraktar, Murat; Güvensen, Gökhan Muzaffer (2021-06-01) Massive MIMO and non-orthogonal multiple access (NOMA) are key technologies for next generation wireless systems due to their distinct advantages. We previously proposed a general framework on unification of code-domain NOMA and joint spatial division and multiplexing (JSDM) which is a spatial user-grouping based hybrid beamforming method for massive MIMO. In this paper, we propose a constrained analog beam-former design for JSDM based systems. Moreover, we propose joint group processing for the digital bea...
Adaptation of Code-Domain NOMA to SC-FDE based Overloaded mmWave Hybrid Massive MIMO Bayraktar, Murat; Güvensen, Gökhan Muzaffer (2021-01-01) IEEEIn this paper, we provide a practical framework to resolve whether code-domain NOMA (CD-NOMA) is beneficial when integrated with massive MIMO systems. In order to realize this integration, first, we develop a novel code-beamspace wideband signal model for uplink CD-NOMA in mmWave hybrid massive MIMO systems employing single-carrier (SC) transmission. Then, we apply a state-of-the-art SC frequency domain equalization (SC-FDE) based iterative receiver where the number of radio frequency (RF) chains is lim...
A Reduced complexity ungerboeck type receiver for multi-code signaling in dispersive channels Güvensen, Gökhan Muzaffer; Tanık, Yalçın; Yılmaz, Ali Özgür; Department of Electrical and Electronics Engineering (2014) The main aim in this thesis is to propose multiple signaling waveforms (multi-code) based yet spectrally efficient modulation schemes and competent receiver architectures realizing soft-input-soft-output (SISO) detection. We search for generic suboptimal receiver architectures for Multi-Code Signaling (MCS), which can be represented as selection of one out of M waveforms per signaling interval. The proposed receiver architectures exhibit almost optimal performance at significantly reduced complexity in high...
A Random Access Scheme for Large Scale 5G/IoT Applications Balevi, Eren; Gitlin, Richard D. (2018-01-01) The integration of slotted Aloha with power domain non-orthogonal multiple access (NOMA), dubbed slotted Aloha-NOMA (SAN) can emerge as an appealing MAC protocol to be used for Internet-of-Things (IoT) applications over 5G networks. In this paper, SAN is discussed, and its performance is evaluated in detail. The simulation results demonstrate that the maximum normalized throughput can be increased from 0.37, which is the case for slotted Aloha, to 1 by means of SAN. Specifically, this full throughput effici...
A novel receiver architecture for single carrier noma transmission in wideband sparse mimo channel. Halil, Bura; Güvensen, Gökhan Muzaffer; Department of Electrical and Electronics Engineering (2019) In contemporary wireless communication systems, it became necessary to provide better solutions than current communication standards because of the increasing demand for massive connectivity and throughput. Non-Orthogonal Multiple Access (NOMA) has become one of the promising candidates for fifth generation (5G) communication networks. In this thesis, Sparse Code Multiple Access (SCMA) is utilized as a single carrier NOMA technique. SCMA is a transmission protocol, in which multiple users shares same time s...

Citation Formats

H. A. Şatana, “A reduced complexity noma map receiver for wideband mimo channels,” M.S. - Master of Science, Middle East Technical University, 2020.