TY - JOUR
T1 - Multiuser MISO interference channels with single-user detection
T2 - Optimality of beamforming and the achievable rate region
AU - Shang, Xiaohu
AU - Chen, Biao
AU - Poor, H. Vincent
N1 - Funding Information:
Manuscript received May 13, 2009; revised January 21, 2011; accepted January 21, 2011. Date of current version June 22, 2011. This work was supported in part by the National Science Foundation under Grants CCF-05-46491, CCF-09-05320, and CNS-09-05398. The material in this paper was presented in part at the IEEE Global Communications Conference, Honolulu, HI, December 2009.
PY - 2011/7
Y1 - 2011/7
N2 - For a multiuser interference channel with multiantenna transmitters and single-antenna receivers, by restricting each transmitter to a Gaussian input and each receiver to a single-user detector, computing the largest achievable rate region amounts to solving a family of nonconvex optimization problems. Recognizing the intrinsic connection between the signal power at the intended receiver and the interference power at the unintended receiver, the original family of nonconvex optimization problems is converted into a new family of convex optimization problems. It is shown that, for such interference channels with each receiver implementing single-user detection, transmitter beamforming can achieve all boundary points of the achievable rate region.
AB - For a multiuser interference channel with multiantenna transmitters and single-antenna receivers, by restricting each transmitter to a Gaussian input and each receiver to a single-user detector, computing the largest achievable rate region amounts to solving a family of nonconvex optimization problems. Recognizing the intrinsic connection between the signal power at the intended receiver and the interference power at the unintended receiver, the original family of nonconvex optimization problems is converted into a new family of convex optimization problems. It is shown that, for such interference channels with each receiver implementing single-user detection, transmitter beamforming can achieve all boundary points of the achievable rate region.
KW - Achievable rate region
KW - Gaussian interference channel
KW - beamforming
UR - http://www.scopus.com/inward/record.url?scp=79959567222&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=79959567222&partnerID=8YFLogxK
U2 - 10.1109/TIT.2011.2145230
DO - 10.1109/TIT.2011.2145230
M3 - Article
AN - SCOPUS:79959567222
SN - 0018-9448
VL - 57
SP - 4255
EP - 4273
JO - IEEE Transactions on Information Theory
JF - IEEE Transactions on Information Theory
IS - 7
M1 - 5895091
ER -