TY - JOUR
T1 - On network interference management
AU - Jovičić, Aleksandar
AU - Wang, Hua
AU - Viswanath, Pramod
N1 - Funding Information:
Manuscript received March 04, 2008; revised February 23, 2010. Date of current version September 15, 2010. This work was supported in part by the National Science Foundation under Grant CCR-0312413 and in part by a grant from Motorola, Inc., as part of the Motorola Center for Communication. A. Jovicˇić and H. Wang are with Qualcomm Flarion Technologies, Bridgewater, NJ 08807 USA (e-mail: [email protected]; huaw@qualcomm. com). P. Viswanath is with the Department of Electrical and Computer Engineering at the University of Illinois at Urbana-Champaign, Urbana, IL 61801 USA (e-mail: [email protected]). Communicated by G. Kramer, Associate Editor for Shannon Theory. Color versions of one or more of the figures in this paper are available online at http://ieeexplore.ieee.org. Digital Object Identifier 10.1109/TIT.2010.2059637 Fig. 1. Many-receiver, single-interferer network in (a) and the single-receiver, many-interferer network in (b). The transmitters are denoted by empty circles and receivers by filled circles. The solid arrows are intended communication links and the dotted arrows represent the interference.
PY - 2010/10
Y1 - 2010/10
N2 - We study two building-block models of interference-limited wireless networks, motivated by the problem of joint Peer-to-Peer and Wide Area Network design. In the first case, a single long-range transmitter interferes with multiple parallel short-range transmissions, and, in the second case, multiple short-range transmitters interfere with a single long-range receiver. We identify the maximal degree-of-freedom region of the former network and show that multilevel superposition coding by the long-range transmitter performs optimally. Moreover, a simple power control strategy, performed by the long-range transmitter, achieves a region that is within one bit of the capacity region, under certain channel conditions. For the latter network, we show that short-range transmitter power control is degree-of-freedom optimal under certain channel conditions.
AB - We study two building-block models of interference-limited wireless networks, motivated by the problem of joint Peer-to-Peer and Wide Area Network design. In the first case, a single long-range transmitter interferes with multiple parallel short-range transmissions, and, in the second case, multiple short-range transmitters interfere with a single long-range receiver. We identify the maximal degree-of-freedom region of the former network and show that multilevel superposition coding by the long-range transmitter performs optimally. Moreover, a simple power control strategy, performed by the long-range transmitter, achieves a region that is within one bit of the capacity region, under certain channel conditions. For the latter network, we show that short-range transmitter power control is degree-of-freedom optimal under certain channel conditions.
KW - Gaussian interference channel
KW - generalized degrees of freedom
KW - interference network
KW - many-to-one
KW - one-to-many
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U2 - 10.1109/TIT.2010.2059637
DO - 10.1109/TIT.2010.2059637
M3 - Article
AN - SCOPUS:77956681325
SN - 0018-9448
VL - 56
SP - 4941
EP - 4955
JO - IEEE Transactions on Information Theory
JF - IEEE Transactions on Information Theory
IS - 10
M1 - 5571914
ER -