K. Kalaiselvi

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With the growing importance of electronic products in day-today life, the need for portable electronic products with low power consumption largely increases. In this paper, an area efficient high speed and low power Multiply Accumulator unit (MAC) with carry look-ahead adder (CLA) as final adder is being designed. In the same MAC architecture design in(More)
— Space time block codes for multiple access channels with full diversity and low decoding complexity for any number of transmitters and one receiver with quantized feedback. We provide detail of our scheme for four transmitter and four antennas. Each transmitter sends code word to the receiver at the same time. First propose a codebook design and feedback(More)
The paper describes incorporation of Knowledge Management with the Ubiquitous Computing Environment. The development of wireless communication and technologies paved the way for the Ubiquitous Computing in Educational domain. In the Ubiquitous Computing Environment, knowledge can be shared as collaborative learning among the learners. Sharing comprises(More)
Cryptography based on block ciphers use Key-dependent ciphers for encryption and decryption. The efficiency of these systems depends on the security and the speed of the algorithm. The encryption process needs to be adaptive and dynamic in order to face any cryptanalytic attacks. Increasing the complexity of the algorithm is one way to prevent the attacks.(More)
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