• The Journal of Korean Institute of Communications and Information Sciences
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• v.33 no.12A
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• pp.1185-1190
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• 2008

In this paper, we propose an simplified successive minimum mean square error ($S^{2}MMSE$) algorithm that can simplify the computational complexity for precoding matrix generation in the successive minimum mean square error (SMMSE) precoding method, which is adopted as a multiuser multiple-input multiple-output (MU-MIMO) precoding technique in the IST (information society technologies)-WINNER (wireless world initiative new radio) project. The original algorithm generates the precoding matrix by calculating all individual precoding vectors with each requiring its own MMSE nulling matrix, over all receive antennas for all users. In contrast, this proposed algorithm first calculates the MMSE nulling matrix for each user, and then calculates all precoding vectors for respective receive antennas of the corresponding user by using the identical MMSE nulling matrix, in which only a simple matrix-vector multiplication is required for each vector. Consequently, it can simplify significantly the computational complexity to generate a precoding matrix for SMMSE precoding.

• Journal of Korean Medical classics
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• v.26 no.3
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• pp.111-126
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• 2013

Objective : This study was designed in order to support the standpoint that dementia will be treated better by remedy for heart rather than for brain, liver and kidney in Korean Medicine. Methods : We investigated which of five viscera make dementia from original texts about it. Then, 15 aged men living alone in Yeongdong-gun, Chungcheongbuk-do were treated for dementia by herb remedies, acupuncture and moxa. After it, we verified through method, for example, SMMSE-DS, CDT, and etc. Results : We had results that the main viscera causing dementia is heart, and heart is related with gall bladder, spleen, and kidney according to philological method. Clinical testing in this viewpoint showed satisfactory effects on the diseases. Conclusion : From the results, we proved it could be a new way of remedy for dementia that main the viscera causing dementia is heart in Korean Medicine.