NDLI: Cognitive space-time processing with known channel correlations: A nonlinear programming approach

Content Provider	IEEE Xplore Digital Library
Author	Islam, M.H. Ying-Chang Liang Zbigniew Dziong
Copyright Year	2009
Description	Author affiliation: École de Technologie Supérieure Montreal, QC H3C 1K3, Canada (Zbigniew Dziong) \|\| INRS-EMT, University of Quebec Montreal, QC H5A 1K6, Canada (Islam, M.H.) \|\| Institute for Infocomm Research, 1 Fusionopolis Way, Singapore 138632 (Ying-Chang Liang)
Abstract	We consider a spectrum sharing based cognitive radio network where a secondary multiple-input multiple-output (MIMO) communication link coexists with a primary user by opportunistically utilizing the transmit spectrum originally allocated to the primary user (PU). The secondary link employs orthogonal space-time block coding (OSTBC) at the transmitter and maximum likelihood (ML) decoding at the receiver. For this system, we focus on designing linear precoders assuming the knowledge of the transmit antenna fading correlations at the secondary user transmitter (ST) for both the links between PU receiver (PR) and ST (ST-PR), and SU receiver (SR) and ST (ST-SR). Given a limited power budget of ST, the precoder is designed to minimize the minimum-distance average pair-wise error probability (PEP) at SR subject to the average interference-power constraint at PR. The original optimization problem is non-convex and we propose to solve this problem using a nonlinear programming method called the augmented Lagrangian algorithm. Simulation results show that this scheme performs better than previously designed suboptimal schemes at all signal to noise ratio (SNR) levels.
Starting Page	122
Ending Page	126
File Size	292103
Page Count	5
File Format	PDF
ISBN	9781424451227
e-ISBN	9781424451234
DOI	10.1109/PIMRC.2009.5450387
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-09-13
Publisher Place	Japan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	MIMO Radio transmitters Strontium Signal to noise ratio Cognitive radio Block codes Maximum likelihood decoding Receivers Receiving antennas Fading
Content Type	Text
Resource Type	Article

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