A Novel Transceiver Architecture for Highly Dispersive NOMA Channels

2018-06-06
When the requirements of internet of things (IoT) and machine-type communication (MTC) are considered, the 5G technology needs to support high spectral efficiency and massive connectivity of users/devices, and the demand for low latency, short packet duration, low power, high mobility and diverse service types. In this paper, first a new multiple access technique belonging to the class of non-orthogonal multiple access (NOMA) based on multi-code signaling (MCS) is proposed for the uplink data transmission mode in severe multi-path fading channels in order to handle the key challenges of 5G technology. This new technique combines the index modulation in code domain with channel division multiple access (ChDMA) on which a novel receiver architecture is structured at significantly reduced complexity. Second, an efficient message passing algorithm (MPA), which realizes iterative maximum a posteriori probability (MAP) detection with linear complexity in the number of interfering users, is proposed. The novel feature of the proposed MPA stems from the use of Ungerboeck factorization, where the whitening filter is avoided before MAP detection. The joint task of equalization and multi-user detection (MUD) is fulfilled via the introduced Ungerboeck type sum-product algorithm (SPA) framework. This architecture for general NOMA transmission, operating on the resultant Ungerboeck type factor-graph (FG) with bidirectional feedback, achieves dramatic complexity reduction (compared to conventional FG based algorithms).

Suggestions

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...
A Novel SDN Dataset for Intrusion Detection in IoT Networks
Sarica, Alper Kaan; Angın, Pelin (2020-11-04)
The number of Internet of Things (IoT) devices and the use cases they aim to support have increased sharply in the past decade with the rapid developments in wireless networking infrastructures. Despite many advantages, the widespread use of IoT has also created a large attack surface frequently exploited by cyber criminals, requiring real-time, automated detection and mitigation of various attacks in the high-volume network traffic generated. Software-defined networking (SDN) and machine learning (ML) base...
A novel architecture proposal for multi-access management in IP-based future wireless networks
Altundaş, Süleyman; Buyurman, Baykal; Department of Electrical and Electronics Engineering (2003)
As the wireless networking technologies advance rapidly, providing mobile users with roaming freely in heterogeneous wireless access domains, the need for multi access arises. This thesis proposes a novel Mobile Multi-Access Management Architecture (MMA-IP) for IP-based future wireless networks. The thesis includes a proposal for a PhD study towards establishing such an architecture. MMA-IP enables mobile users to utilize multiple access domains synchronously and to switch seamlessly between different acces...
A Cloud Based Architecture for Distributed Real Time Processing of Continuous Queries
Gökalp, Mert Onuralp; Koçyiğit, Altan; Department of Information Systems (2015)
The technological advancements in Internet of Things (IoT) domain have enabled us to reshape the physical world through smart devices, sensors and actuators. The data collected by IoT devices has become a valuable asset to extract knowledge about the environment and other nearby devices. Existing IoT applications mostly store collected data in a central server and allow users to query stored data to notice and react to changes in the environment. Usually cloud and big data technologies are utilized in those...
A Wireless Vehicle-based mobile network infrastructure designed for smarter cities
Quer, Giorgio; Aktas, Tugcan; Librino, Federico; Javidi, Tara; Rao, Ramesh R. (Elsevier BV, 2019-03-15)
The evolution of smart city services and applications requires a more efficient wireless infrastructure to provide the needed data rate to users in a high-density environment with high mobility, satisfying at the same time the request for high-connectivity and low-energy consumption. To address the challenges in this new network scenario, we propose to opportunistically rely on the increasing number of connected vehicles in densely populated urban areas. The idea is to support the macro base station (BS) wi...
Citation Formats
G. M. Güvensen and A. Ö. Yılmaz, “A Novel Transceiver Architecture for Highly Dispersive NOMA Channels,” 2018, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/42210.