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An Optimal Orthogonal Overlay for Fixed MIMO Wireless Link  

Yun, Yeo-Hun (포항공과대학교 전자전기공학과 통신 및 정보시스템 연구실)
Cho, Joon-Ho (포항공과대학교 전자전기공학과)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.34, no.10C, 2009 , pp. 929-936 More about this Journal
Abstract
In this paper, we consider designing a multi-input multi-output (MIMO) overlay system for fixed MIMO wireless link, where a frequency flat narrowband channel is shared by multiple transmitter and receiver pairs. Assuming the perfect knowledge of the second-order statistics of the received legacy signals and the composite channels from the overlay transmitter to the legacy receivers, the jointly optimal linear precoder and decoder matrices of the MIMO overlay system is derived to minimize the total mean squared error (MSE) of the data symbol vector, subject to total average transmission power and zero interference induced to legacy MIMO systems already existing in the frequency band of interest. Furthermore, the necessary and sufficient condition for the existence of the optimal solution is also derived.
Keywords
Multiuser MIMO; Overlay System; Joint Optimization; Mean-Squared Error; Fixed MIMO Link;
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Times Cited By KSCI : 1  (Citation Analysis)
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