NDLI: On interference-aware precoding for multi-antenna channels with finite-alphabet inputs

Content Provider	IEEE Xplore Digital Library
Author	Weiliang Zeng Chengshan Xiao Jianhua Lu
Copyright Year	2012
Description	Author affiliation: State Key Laboratory on Microwave and Digital Communications, Tsinghua National Laboratory for Information Science and Technology, Dept. of Electronic Engineering, Tsinghua University, Beijing, China (Weiliang Zeng; Jianhua Lu) \|\| Dept. of Electrical & Computer Engineering, Missouri University of Science and Technology, MO, USA (Chengshan Xiao)
Abstract	This paper investigates the interference-aware linear precoder design with finite-alphabet inputs. It maximizes the mutual information between the transmitter and intended receiver while controlling the interference power caused to unintended receivers. For this nonconcave problem, this work proposes a global optimization approach, which is based on two key observations: 1) the interference-aware precoding problem can be reformulated to the problem minimizing a function with bilinear terms over the intersection of multiple co-centered ellipsoids; 2) these bilinear terms can be relaxed by their convex and concave envelopes. In this way, the global optimal solution is obtained by solving a sequence of relaxed problems over shrinking feasible regions. The proposed algorithm calculates the optimal precoder and the theoretical limit of the transmission rate with interference constraints. Thus, it offers an important benchmark for performance evaluation of interference constrained networks.
Starting Page	3974
Ending Page	3978
File Size	221988
Page Count	5
File Format	PDF
ISBN	9781457720529
ISSN	15503607
e-ISBN	9781457720536
e-ISBN	9781457720512
DOI	10.1109/ICC.2012.6363663
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-06-10
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Upper bound Interference constraints Vectors MIMO Algorithm design and analysis Receivers
Content Type	Text
Resource Type	Article

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