Full Duplex Relay Clusters

Bibliographic Details
Main Author:	Chen, Lu
Language:	English
Published:	The Ohio State University / OhioLINK 2019
Subjects:	Engineering Computer Engineering full duplex relay full duplex wireless relay relay cluster cooperative relaying interference management interference cancellation
Online Access:	http://rave.ohiolink.edu/etdc/view?acc_num=osu1562411023502331

id	ndltd-OhioLink-oai-etd.ohiolink.edu-osu1562411023502331
record_format	oai_dc
spelling	ndltd-OhioLink-oai-etd.ohiolink.edu-osu15624110235023312021-08-03T07:11:43Z Full Duplex Relay Clusters Chen, Lu Engineering Computer Engineering full duplex relay full duplex wireless relay relay cluster cooperative relaying interference management interference cancellation In-band full duplex techniques have been shown practical in many recent works, empowering two wireless radios to simultaneously transmit and receive in the same frequency band. With the advances in full duplex techniques, full duplex capable relays have been shown feasible. Instead of generating data itself, a full duplex relay can forward the received signal while receiving it. However, most of these designs can only utilize one relay at the same time due to the potential inter-relay interferencewhen multiple relays coexist.In this thesis, BiPass is first presented to enable end-to-end full duplex with the help of full duplex relay clusters. In previous works, full duplex has been shown to potentially double the channel capacity and achieve lower delays. However, full duplex is only available between two adjacent nodes within the communication range. BiPass to proposed to break this limitation. With the help of full duplex relays, simultaneous bidirectional in-band cut-through transmissions between two far apart nodes are enabled with BiPass, so they can do full duplex communications as if they were within each other’s transmission range.Then AllPass is presented, a system that can employ multiple full duplex relays at the same time, while introducing only the same amount of extra delay as a one-relay system. This constant extra delay, regardless of number of relays being employed, is especially useful in reality to work with existing systems. AllPass is transparent to existing systems as it does not need modifications or cooperation of the transmitter or receiver. Many previous works utilizing only one relay can potentially be extended to multiple relays case with AllPass, which may further improve the performance.At last, we discuss whether constructive and destructive full duplex relays are possible. A full duplex has the opportunity to properly modify the signal before forwarding it, which has been explored to enable constructive and destructive full duplex relaying recently. With these designs, the signal through the full duplex relay could constructively or destructively add up with the signal from the direct link at the receiver side. We find that for OFDM signals, such relays can not be achieved if the additional latency of the relayed path is more than one sample time than the direct link. Our analysis and results challenge the assumptions on the relay latency requirements of previous works to realize such systems.Throughout the thesis, extensive experiments are performed with software defined radios including NI PXIe, WARP and USRP. Our results show that full duplex relay cluster can improve the system performance in various scenarios. The last part of this thesis gives the conclusion and outlines the directions of future work. We believe that the proposed full duplex relay cluster designs will inspire more researches and act as an enabling technique for many more exciting applications in the future. 2019-10-10 English text The Ohio State University / OhioLINK http://rave.ohiolink.edu/etdc/view?acc_num=osu1562411023502331 http://rave.ohiolink.edu/etdc/view?acc_num=osu1562411023502331 unrestricted This thesis or dissertation is protected by copyright: all rights reserved. It may not be copied or redistributed beyond the terms of applicable copyright laws.
collection	NDLTD
language	English
sources	NDLTD
topic	Engineering Computer Engineering full duplex relay full duplex wireless relay relay cluster cooperative relaying interference management interference cancellation
spellingShingle	Engineering Computer Engineering full duplex relay full duplex wireless relay relay cluster cooperative relaying interference management interference cancellation Chen, Lu Full Duplex Relay Clusters
author	Chen, Lu
author_facet	Chen, Lu
author_sort	Chen, Lu
title	Full Duplex Relay Clusters
title_short	Full Duplex Relay Clusters
title_full	Full Duplex Relay Clusters
title_fullStr	Full Duplex Relay Clusters
title_full_unstemmed	Full Duplex Relay Clusters
title_sort	full duplex relay clusters
publisher	The Ohio State University / OhioLINK
publishDate	2019
url	http://rave.ohiolink.edu/etdc/view?acc_num=osu1562411023502331
work_keys_str_mv	AT chenlu fullduplexrelayclusters
_version_	1719455825616961536

Full Duplex Relay Clusters

Similar Items