A bandwidth and energy efficient cooperative diversity scheme based on quadrature signaling is proposed. The quadrature signaling is achieved by transmitting in the in-phase and quadrature components of QPSK modulation. The diversity gain and the bi
we propose a data fragmentation scheme to increase channel utilization and avoid inevitable collision. Our proposed scheme outperforms the standard IEEE 802.15.4 MAC in terms of collision probability and aggregate throughput. The proposed scheme is
This delightful book leads you through the basic elements of programming in Scheme (a Lisp dialect) via a series of dialogues with well-chosen questions and exercises. Besides teaching Scheme, The Little Schemer teaches the reader how to think about
Delay tolerant networks (DTNs) are a special type of wireless mobile networks which may lack continuous network connectivity. Multicast is an important routing function that supports the distribution of data to a group of users, a service needed for
A new mobile payment scheme for roaming services Ren-Junn Hwang *, Sheng-Hua Shiau, Ding-Far Jan Department of Computer Science and Information Engineering, Tamkang University, Tamsui, Taipei 251, Taiwan, ROC Received 22 August 2005; received in rev
Securing credit card transactions with one-time payment scheme q Yingjiu Li a,*, Xinwen Zhang b a School of Information Systems, Singapore Management University, 80 Stamford Road, Singapore 178902 b Lab for Information Security Technology, George Ma
This introduction to programming places computer science in the core of a liberal arts education Unlike other introductory books, it focuses on the program design process. This approach foster a variety of skills--critical reading, analytical thinki
