Abstract: In this paper, we study the secure multiantenna transmission with artificial noise (AN) under imperfect channel state information (CSI) in the presence of spatially randomly distributed ...

PARK Hahnkyu is Professor of Political Science at the Department of International Studies in Kyung Hee University, Republic of Korea. YANG Chun Hee is also Professor of Political Science at the ...

We first derive the exact closed-form expressions of the system outage probability, based on which we obtain the outage probability under the perfect self-interference cancellation to investigate the ...

Alibaba Group’s9988-1.15%decrease; red down pointing triangle fourth-quarter revenue grew even as the e-commerce giant continued to face fierce domestic competition and geopolitical ...

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The Supreme Court on Tuesday upheld a decision of the now defunct Competition Appellate Tribunal (COMPAT) which ruled that offering volume-based discounts does not, by itself, amount to discriminatory ...

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which receive significantly more revenue. “Achieving goals depends not only on ambition but also on the environment. And this environment is unfriendly. We are facing imperfect competition. The ...

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