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Massively Parallel Detection for Non-Orthogonal Signal Transmissions

Jayawardena, Chathura and Nikitopoulos, Konstantinos (2018) Massively Parallel Detection for Non-Orthogonal Signal Transmissions In: IEEE GLOBECOM 2018 Workshops, 09-13 Dec 2018, Abu Dhabi, UAE.

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Abstract

The increasing demand for massive connectivity with low latency requirements has triggered a paradigm shift towards Non-Orthogonal transmissions. Still, to translate the theoretical gains of Non-Orthogonal transmissions into practical, efficient “soft” detection schemes are required. The detection latency and/or complexity of state-of-the-art detection methods becomes impractical for large Non-Orthogonal systems, both due to the large number of interfering streams and due to the rank-deficient or ill-determined nature of the corresponding interference matrix. Extending the recently proposed MultiSphere framework, this work introduces NorthCore; a massively parallel sphere-decoding-based scheme for the detection of large and illdetermined Non-Orthogonal systems. Similarly to MultiSphere, NorthCore reduces the corresponding search space by focusing the available processing power to the most promising vector solutions that are processed in parallel. As a result, the proposed detection scheme can attain a detection processing latency similar to that of highly-suboptimal linear detectors and even outperform state-of-the-art sophisticated detection approaches with up to an order of magnitude reduced complexity. To identify the most promising vector solutions, NorthCore introduces a sortfree candidate selection technique that reduces the necessary preprocessing complexity by up to an order of magnitude, making the proposed approach practical.

Item Type: Conference or Workshop Item (Conference Paper)
Divisions : Faculty of Engineering and Physical Sciences > Electronic Engineering
Authors :
NameEmailORCID
Jayawardena, Chathurac.jayawardena@surrey.ac.uk
Nikitopoulos, Konstantinosk.nikitopoulos@surrey.ac.uk
Date : 6 September 2018
Funders : Engineering and Physical Sciences Research Council (EPSRC)
Copyright Disclaimer : © Copyright 2018 IEEE – All rights reserved.
Uncontrolled Keywords : Sphere Decoding; Non-Orthogonal Transmission; Parallel Processing
Related URLs :
Depositing User : Clive Harris
Date Deposited : 17 Sep 2018 08:38
Last Modified : 11 Dec 2018 11:24
URI: http://epubs.surrey.ac.uk/id/eprint/849297

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