Abstract
In this paper, we consider K-user Y channels where K users simultaneously exchange messages with each other via an intermediate relay. Degrees of freedom (DOF) of Y channels with multiple antennas is not known in general. Investigation of the feasibility conditions of signal space alignment for network coding is an initial step for addressing this open problem. We verify that when user i with M i antennas sends K-1 independent messages to the other users through a relay with N antennas and each message achieves the DOF of d, the total DOF of dK(K-1) is attained if M i d(K-1), N≥ dK(K-1)}/2 and N < min{ i+M j-d
| Original language | English |
|---|---|
| Article number | 6144762 |
| Pages (from-to) | 1210-1219 |
| Number of pages | 10 |
| Journal | IEEE Transactions on Wireless Communications |
| Volume | 11 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 2012 Mar 1 |
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Keywords
- Degrees of freedom
- interference alignment
- network coding
- Y channels
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Computer Science Applications
- Applied Mathematics
Cite this
Achievable degrees of freedom on K-user y channels. / Lee, Kwangwon; Lee, Namyoon; Lee, Inkyu.
In: IEEE Transactions on Wireless Communications, Vol. 11, No. 3, 6144762, 01.03.2012, p. 1210-1219.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Achievable degrees of freedom on K-user y channels
AU - Lee, Kwangwon
AU - Lee, Namyoon
AU - Lee, Inkyu
PY - 2012/3/1
Y1 - 2012/3/1
N2 - In this paper, we consider K-user Y channels where K users simultaneously exchange messages with each other via an intermediate relay. Degrees of freedom (DOF) of Y channels with multiple antennas is not known in general. Investigation of the feasibility conditions of signal space alignment for network coding is an initial step for addressing this open problem. We verify that when user i with M i antennas sends K-1 independent messages to the other users through a relay with N antennas and each message achieves the DOF of d, the total DOF of dK(K-1) is attained if M i d(K-1), N≥ dK(K-1)}/2 and N < min{ i+M j-d
AB - In this paper, we consider K-user Y channels where K users simultaneously exchange messages with each other via an intermediate relay. Degrees of freedom (DOF) of Y channels with multiple antennas is not known in general. Investigation of the feasibility conditions of signal space alignment for network coding is an initial step for addressing this open problem. We verify that when user i with M i antennas sends K-1 independent messages to the other users through a relay with N antennas and each message achieves the DOF of d, the total DOF of dK(K-1) is attained if M i d(K-1), N≥ dK(K-1)}/2 and N < min{ i+M j-d
KW - Degrees of freedom
KW - interference alignment
KW - network coding
KW - Y channels
UR - http://www.scopus.com/inward/record.url?scp=84863373526&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84863373526&partnerID=8YFLogxK
U2 - 10.1109/TWC.2012.012712.111194
DO - 10.1109/TWC.2012.012712.111194
M3 - Article
AN - SCOPUS:84863373526
VL - 11
SP - 1210
EP - 1219
JO - IEEE Transactions on Wireless Communications
JF - IEEE Transactions on Wireless Communications
SN - 1536-1276
IS - 3
M1 - 6144762
ER -