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This paper estimates bounds on the capacity of Nakagami-m fading massive multiple-input multiple-output (MIMO) channels with large number of antennas at the transmitter and receiver. We consider two models namely conventional co-located MIMO (C-MIMO) and distributed MIMO (D-MIMO) models. At first, we derive the achievable rate for the C-MIMO and D-MIMO systems. Secondly, we use maximum ratio combining...
Personal RFID tags store valuable information private to their users that can easily be subject to eavesdropping, unauthorized reading, owner tracking, and cloning. RFID tags are also susceptible to relay attacks and likely to get lost and stolen. In this paper, we introduce the problem of user authentication to RFID tags. This allows users to control when and where their RFID tags can be accessed...
Garjan (Dipterocarpus turbinatus Gaertn. F) is a highly ectomycorrhizal tree species growing in hilly areas of Bangladesh. The horizontal distributions of ectomycorrhizas (ECM) in different distances (1, 2, 3 & 4m) from the tree base were determined in 5, 10 and 20-year-old D. turbinatus plantations of Chittagong University Campus (CUC) in 2003. The ECM infection (%) in roots was counted at three...
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