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» On the hops present in costas permutations
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108
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TIT
2010
82views Education» more  TIT 2010»
14 years 7 months ago
On the hops present in costas permutations
We determine that exponential Welch permutations lead in general to the smallest maximal frequency hops among all Costas permutations, and are also relatively easy to study, as a ...
Konstantinos Drakakis
112
Voted
ARSCOM
2008
78views more  ARSCOM 2008»
15 years 1 months ago
Three challenges in Costas arrays
We present 3 open challenges in the field of Costas arrays. They are: a) the determination of the number of dots on the main diagonal of a Welch array, and especially the maximal ...
Konstantinos Drakakis
119
Voted
ISCAS
2006
IEEE
120views Hardware» more  ISCAS 2006»
15 years 7 months ago
Fast bit permutation unit for media enhanced microprocessors
— Bit and subword permutations are useful in many multimedia and cryptographic applications. New shift and permute instructions have been added to the instruction set of general-...
Giorgos Dimitrakopoulos, Christos Mavrokefalidis, ...
121
Voted
EWSN
2004
Springer
16 years 19 days ago
Structured Communication in Single Hop Sensor Networks
Abstract. We propose a model for communication in single-hop wireless sensor networks and define and evaluate the performance of a robust, energy balanced protocol for a powerful a...
Amol Bakshi, Viktor K. Prasanna