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On degrees-of-freedom of full-duplex uplink/downlink channel

Achaleshwar Sahai, Suhas Diggavi, Ashutosh Sabharwal
2013 2013 IEEE Information Theory Workshop (ITW)  
In this paper, we identify scenarios where inter-node interference can be managed to provide significant gain in degrees of freedom over the conventional half-duplex cellular design.  ...  Feasibility of full-duplex opens up the possibility of applying it to cellular networks to operate uplink and downlink simultaneously for multiple users.  ...  Rate gains from full-duplex in bi-directional communication are evident as fullduplex can have as much as twice (of half-duplex) the spatial degrees of freedom (DoF) to communicate.  ... 
doi:10.1109/itw.2013.6691283 dblp:conf/itw/SahaiDS13 fatcat:wtanrue23rgyxjesfn3eyrz6ve

On the secrecy degrees of freedom with full-duplex communication

Nurul H. Mahmood, Preben Mogensen
2017 2017 IEEE International Conference on Communications Workshops (ICC Workshops)  
The secrecy degrees of freedom with full duplex is shown to be two as opposed to that of zero in half duplex mode. Index Terms-Full duplex, 5G, Physical layer security, secrecy degrees of freedom.  ...  We specifically derive the information theoretic secrecy degrees of freedom measure for a pair of nodes communicating in full duplex mode.  ...  NUMERICAL RESULTS The secrecy degrees of freedom and the throughput analysis of full duplex and half duplex communication are numerically validated through Matlab R based Monte Carlo simulations in this  ... 
doi:10.1109/iccw.2017.7962840 dblp:conf/icc/MahmoodM17 fatcat:aagm3hjotfcepfoen56wr5n7uy

Spatial degrees-of-freedom in large-array full-duplex: the impact of backscattering

Evan Everett, Ashutosh Sabharwal
2016 EURASIP Journal on Wireless Communications and Networking  
, D FD : the set of all achievable uplink/downlink degree-of-freedom tuples.  ...  In this paper, we leverage an antenna-theory-based channel model to analyze the spatial degrees of freedom available to a full-duplex capable base station.  ...  , what is the uplink/downlink degree-offreedom region when the only self-interference mitigation strategy is spatial isolation?  ... 
doi:10.1186/s13638-016-0781-3 fatcat:vfv4swinyzdmzfw6a25qfhikka

Opportunistic scheduling for full-duplex uplink-downlink networks

Can Karakus, Suhas Diggavi
2015 2015 IEEE International Symposium on Information Theory (ISIT)  
We study opportunistic scheduling and the sum capacity of cellular networks with a full-duplex multi-antenna base station and a large number of single-antenna half-duplex users.  ...  We present a simple opportunistic joint uplink-downlink scheduling algorithm that exploits multiuser diversity and treats interference as noise.  ...  This enables us to design an opportunistic joint uplink-downlink scheduling algorithm that, in a homogeneous network with a large number of half-duplex users and a multiantenna full-duplex base station  ... 
doi:10.1109/isit.2015.7282609 dblp:conf/isit/KarakusD15 fatcat:rlsvnz7ggnfv7a6jg62elrbffe

Full-Duplex Cloud-RAN with Uplink/Downlink Remote Radio Head Association [article]

Mohammadali Mohammadi and Himal A. Suraweera and Chintha Tellambura
2016 arXiv   pre-print
Numerical results show that significant performance improvements can be achieved by using the full-duplex mode as compared to the half-duplex mode, while the choice of the beamforming design as well as  ...  the RRH association scheme plays a critical role in determining the full-duplex gains.  ...  Full-duplex radio nodes can transmit and receive on the same channel.  ... 
arXiv:1602.08836v1 fatcat:kh7br4mosrgm5evamvtawyjbf4

Relay-aided interference neutralization for the multiuser uplink-downlink asymmetric setting

Jinyuan Chen, Petros Elia, Raymond Knopp
2011 2011 IEEE International Symposium on Information Theory Proceedings  
In the context of multiuser relay-aided multi-way communications, we identify and meet the optimal degrees of freedom (DOF) for different multiuser uplink-downlink settings of practical importance.  ...  to reduce the effect of multiuser interference and of the half-duplex constraint.  ...  We are interested in analyzing the degrees of freedom, so a rate of R bits per channel use (bpcu), corresponds to d = lim ρ→∞ R log ρ degrees of freedom. III.  ... 
doi:10.1109/isit.2011.6034051 dblp:conf/isit/ChenEK11 fatcat:gplot4rwfnd7dccu52de3zykb4

Degrees of Freedom of Uplink-Downlink Multiantenna Cellular Networks [article]

Sang-Woon Jeon, Changho Suh
2014 arXiv   pre-print
Under this uplink-downlink setting, the sum degrees of freedom (DoF) is completely characterized as the minimum of (N_1N_2+(M_1,N_1)(N_1-N_2)^++(M_2,N_2)(N_2-N_1)^+)/(N_1,N_2), M_1+N_2,M_2+N_1, (M_1,M_  ...  The DoF gain from such uplink-downlink operation is further shown to be achievable for heterogeneous cellular networks having hotspots and with delayed channel state information.  ...  Degrees of Freedom Let W αi and W βj be chosen uniformly at random from [1 : 2 nRαi ] and [1 : 2 nRβj ] respectively, where i ∈ [1 : N 1 ] and j ∈ [1 : N 2 ].  ... 
arXiv:1404.6012v2 fatcat:a4d52ksb7fhz3lw6tmxb6ucgvq

Full-Duplex Radio for Uplink/Downlink Wireless Access With Spatially Random Nodes

Mohammadali Mohammadi, Himal A. Suraweera, Yun Cao, Ioannis Krikidis, Chintha Tellambura
2015 IEEE Transactions on Communications  
A full-duplex (FD) multiple antenna access point (AP) communicating with single antenna half-duplex (HD) spatially random users to support simultaneous uplink (UL)/downlink (DL) transmissions is investigated  ...  We show that FD precoding at AP improves the UL/DL sum rate and hence a doubling of the performance of the HD mode is achievable.  ...  This is intuitive, since the MRC (rx) /ZF (tx) allocates one degree-of-freedom for LI cancellation at the transmit side of the AP. C.  ... 
doi:10.1109/tcomm.2015.2495353 fatcat:j6fgf4bd25aenk2d2mnotfauqu

Degrees of freedom of half-duplex MIMO multi-way relay channel with full data exchange

Tao Huang, Xiaojun Yuan, Jinhong Yuan
2014 2014 IEEE Global Communications Conference  
In this paper, we investigate the degrees of freedom (DoF) of the half-duplex multiple-input multiple-output (MIMO) multi-way relay channel (MWRC) with full data exchange, where each user wants to learn  ...  Based on that, we derive the DoF capacity of the halfduplex MIMO MWRC with full data exchange.  ...  The degrees of freedom (DoF) is an important metric to understand the capacity behavior of the MIMO MWRC.  ... 
doi:10.1109/glocom.2014.7037489 dblp:conf/globecom/HuangYY14 fatcat:om27hcagv5h2jf6hrecdl3z3ne

Interference neutralization for separated multiuser uplink-downlink with distributed relays

Jinyuan Chen, Arun Singh, Petros Elia, Raymond Knopp
2011 2011 Information Theory and Applications Workshop  
These improvements are quantified in terms of the achievable degrees of freedom (DOF), where asymptotic analysis reveals that in specific cases, these simple techniques achieve optimal DOF performance.  ...  We consider the role of independent single antenna relays in allowing for interference cancellation and for multiplexing of uplink and downlink communications, in the presence of multiple interfering users  ...  We are interested in analyzing the degrees of freedom, so a rate of R bits per channel use (bpcu), corresponds to d = lim ρ→∞ R log ρ degrees of freedom. A.  ... 
doi:10.1109/ita.2011.5743629 dblp:conf/ita/ChenSEK11 fatcat:vvrg2nk5wrgnxitwkdhvazmh6i

Multipair Two-Way Relay Network With Harvest-Then-Transmit Users: Resolving Pairwise Uplink-Downlink Coupling

Shuai Wang, Minghua Xia, Yik-Chung Wu
2016 IEEE Journal on Selected Topics in Signal Processing  
, and the joint uplink-downlink network design is nontrivial.  ...  However, it is well-known that harvest-then-transmit introduces uplink-downlink coupling for a user.  ...  This reflects the high efficiency of the proposed method even in the case of low degree of freedom. VII.  ... 
doi:10.1109/jstsp.2016.2612162 fatcat:j2uqkll2fvgk3gqyw4gbyoyy7i

On the Degrees of Freedom of the Symmetric Multi-Relay MIMO Y Channel

Tian Ding, Xiaojun Yuan, Soung Chang Liew
2017 IEEE Transactions on Wireless Communications  
In this paper, we study the degrees of freedom (DoF) of the symmetric multi-relay multiple-input multiple-output (MIMO) Y channel, where three user nodes, each with M antennas, communicate via K geographically  ...  We also show that the uplink-downlink asymmetric design proposed in this paper considerably outperforms the conventional approach based on uplink-downlink symmetry.  ...  Degrees of Freedom The goal of this paper is to analyze the degrees of freedom of the symmetric multi-relay MIMO Y channel described above.  ... 
doi:10.1109/twc.2017.2712770 fatcat:yvjzbbp5ancvbbbb3tx6mta3u4

A signal-space analysis of spatial self-interference isolation for full-duplex wireless

Evan Everett, Ashutosh Sabharwal
2014 2014 IEEE International Symposium on Information Theory  
In this paper we leverage an antenna-theory-based channel model to analyze the spatial degrees of freedom available to a full-duplex capable base station, and observe that whether or not spatial isolation  ...  out-performs time-division (i.e. half-duplex) depends heavily on the geometric distribution of scatterers.  ...  Contribution We extend the PBT model to the threenode full-duplex topology of Figure 1 , and derive the degreeof-freedom region D FD , i.e. the set of all achievable uplink/downlink degree-of-freedom  ... 
doi:10.1109/isit.2014.6874915 dblp:conf/isit/EverettS14 fatcat:d4izm63oujalxhqbnmqvnl2omi

A Signal-Space Analysis of Spatial Self-Interference Isolation for Full-Duplex Wireless [article]

Evan Everett, Ashutosh Sabharwal
2014 arXiv   pre-print
In this paper we leverage an antenna-theory-based channel model to analyze the spatial degrees of freedom available to a full-duplex capable base station, and observe that whether or not spatial isolation  ...  out-performs time-division (i.e. half-duplex) depends heavily on the geometric distribution of scatterers.  ...  Contribution We extend the PBT model to the threenode full-duplex topology of Figure 1 , and derive the degreeof-freedom region D FD , i.e. the set of all achievable uplink/downlink degree-of-freedom  ... 
arXiv:1404.2537v1 fatcat:estratk23bgyrm2tq3ncsnp2n4

Full-Duplex Non-Orthogonal Multiple Access for Modern Wireless Networks [article]

Mohammadali Mohammadi, Xiaoyan Shi, Batu K. Chalise, Himal A. Suraweera, Caijun Zhong, John S. Thompson
2017 arXiv   pre-print
Specifically, we provide a comprehensive overview on application of full-duplex NOMA in cellular networks, cooperative and cognitive radio networks, and characterize gains possible due to full-duplex operation  ...  In this article, we consider the feasibility and benefits of combining full-duplex operation with NOMA for modern communication systems.  ...  The application of multiple antennas to NOMA provides additional degrees-of-freedom for further performance improvement.  ... 
arXiv:1710.11062v2 fatcat:mngthlvmnzeaddxa4vihcfonfu
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