A Linear Network Coding Approach for Uplink Distributed MIMO Systems: Protocol and Outage Behavior

Yang, T; Sun, QT; Zhang, JA; Yuan, J

A Linear Network Coding Approach for Uplink Distributed MIMO Systems: Protocol and Outage Behavior

Yang, T

Sun, QT Zhang, JA

Yuan, J

Permalink

Publication Type:: Journal Article
Citation:: IEEE Journal on Selected Areas in Communications, 2015, 33 (2), pp. 250 - 263
Issue Date:: 2015-02-01

Open Access

Copyright Clearance Process

Recently Added
In Progress
Open Access

This item is open access.

Adobe PDF

Download full textAdobe PDF (2.99 MB)

View on publisher's site

View statistics

Full metadata record

Field	Value	Language
dc.contributor.author	Yang, T https://orcid.org/0000-0002-9870-6866	en_US
dc.contributor.author	Sun, QT	en_US
dc.contributor.author	Zhang, JA https://orcid.org/0000-0002-6102-3762	en_US
dc.contributor.author	Yuan, J	en_US
dc.date.issued	2015-02-01	en_US
dc.identifier.citation	IEEE Journal on Selected Areas in Communications, 2015, 33 (2), pp. 250 - 263	en_US
dc.identifier.issn	0733-8716	en_US
dc.identifier.uri	http://hdl.handle.net/10453/39562
dc.description.abstract	© 1983-2012 IEEE. A distributed multiple-input-multiple-output (MIMO) system consists of M users served by L distributed base stations (BSs) , where the BSs are connected to a central unit (CU) via L independent backhaul (BH) links. In this paper, we consider the design of an uplink distributed MIMO system where 1) the channel state information is not available at the transmitters and 2) the BH links are rate constrained. We propose a new linear network coding (LNC)-based protocol: the M users transmit simultaneously. Each BS generates N linear functions of the M users' messages, based on a preassigned LNC coefficient matrix. The CU collects N ·L linear functions from the L BSs and recovers all M users' messages by solving these linear functions. The decoding becomes successful if the linear functions has full rank M and fails if the linear functions are rank deficient. We derive the preassigned LNC coefficient matrix that minimizes the probability of rank deficiency. We then analyze the outage probability (OP) of the proposed scheme over a Rayleigh fading channel. We analytically show that as long as the BH rate is greater than the individual data rate of one user, the OP of the proposed scheme decays like 1/SNRL at high SNR. This is in contrast to the existing scheme whose OP decays like 1/SNRL. As the BH rate constraint approaches M times the data rate of one user, the performance of the proposed scheme is 10/L log10 (L!) dB away from that of the full MIMO scenario at high SNR. We also develop a structured way to efficiently construct the preassigned LNC coefficient matrix that yields the optimized OP performance. Numerical results show that the proposed scheme has significantly improved performance over existing schemes.	en_US
dc.relation.ispartof	IEEE Journal on Selected Areas in Communications	en_US
dc.relation.isbasedon	10.1109/JSAC.2014.2384296	en_US
dc.subject.classification	Networking & Telecommunications	en_US
dc.title	A Linear Network Coding Approach for Uplink Distributed MIMO Systems: Protocol and Outage Behavior	en_US
dc.type	Journal Article
utslib.citation.volume	2	en_US
utslib.citation.volume	33	en_US
utslib.for	0805 Distributed Computing	en_US
utslib.for	0906 Electrical and Electronic Engineering	en_US
utslib.for	1005 Communications Technologies	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Electrical and Data Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - GBDTC - Global Big Data Technologies
utslib.copyright.status	open_access
pubs.issue	2	en_US
pubs.publication-status	Published	en_US
pubs.volume	33	en_US

Abstract:

© 1983-2012 IEEE. A distributed multiple-input-multiple-output (MIMO) system consists of M users served by L distributed base stations (BSs) , where the BSs are connected to a central unit (CU) via L independent backhaul (BH) links. In this paper, we consider the design of an uplink distributed MIMO system where 1) the channel state information is not available at the transmitters and 2) the BH links are rate constrained. We propose a new linear network coding (LNC)-based protocol: the M users transmit simultaneously. Each BS generates N linear functions of the M users' messages, based on a preassigned LNC coefficient matrix. The CU collects N ·L linear functions from the L BSs and recovers all M users' messages by solving these linear functions. The decoding becomes successful if the linear functions has full rank M and fails if the linear functions are rank deficient. We derive the preassigned LNC coefficient matrix that minimizes the probability of rank deficiency. We then analyze the outage probability (OP) of the proposed scheme over a Rayleigh fading channel. We analytically show that as long as the BH rate is greater than the individual data rate of one user, the OP of the proposed scheme decays like 1/SNRL at high SNR. This is in contrast to the existing scheme whose OP decays like 1/SNRL. As the BH rate constraint approaches M times the data rate of one user, the performance of the proposed scheme is 10/L log10 (L!) dB away from that of the full MIMO scenario at high SNR. We also develop a structured way to efficiently construct the preassigned LNC coefficient matrix that yields the optimized OP performance. Numerical results show that the proposed scheme has significantly improved performance over existing schemes.

Please use this identifier to cite or link to this item:

http://hdl.handle.net/10453/39562