This paper presents a new adaptive mobility-aware MAC protocol for sensor networks (MS-MAC). The protocol uses any change in received signal level as an indication of mobility and, when necessary, triggers the mobility handling mechanism. By doing this way, the new mobility-aware MAC protocol can work very energy-efficiently when the network is stationary, whereas it can maintain some level of network performance when there are mobile sensors.
标签： mobility-aware adaptive networks presents
上传时间： 2014-01-11
上传用户：libenshu01
Software-defined radios (SDRs) have been around for more than a decade. The first complete Global Positioning System (GPS) implementation was described by Dennis Akos in 1997. Since then several research groups have presented their contributions.We therefore find it timely to publish an up-to-date text on the subject and at the same time include Galileo, the forthcoming European satellitebased navigation system. Both GPS and Galileo belong to the category of Global Navigation Satellite Systems (GNSS)
标签： Software-defined complete Global radios
上传时间： 2013-12-16
上传用户：xauthu
RSA ( Rivest Shamir Adleman )is crypthograph system that used to give a secret information and digital signature . Its security based on Integer Factorization Problem (IFP). RSA uses an asymetric key. RSA was created by Rivest, Shamir, and Adleman in 1977. Every user have a pair of key, public key and private key. Public key (e) . You may choose any number for e with these requirements, 1< e <Æ (n), where Æ (n)= (p-1) (q-1) ( p and q are first-rate), gcd (e,Æ (n))=1 (gcd= greatest common divisor). Private key (d). d=(1/e) mod(Æ (n)) Encyption (C) . C=Mª mod(n), a = e (public key), n=pq Descryption (D) . D=C° mod(n), o = d (private key
标签： crypthograph information Adleman Rivest
上传时间： 2017-09-01
上传用户：chfanjiang
AM26C31CLow Power, I CC = 100 ƒ ⊂ A Typ Operate From a Single 5-V Supply High Speed, t PLH = t PHL = 7 ns Typ Low Pulse Distortion, t sk(p) = 0.5 ns Typ High Output Impedance in Power-Off Conditions Improved Replacement for AM26LS31
标签： Operate Single Supply Power
上传时间： 2014-01-20
上传用户：gtzj
I implement Dijkstra s Single Source Shortest Path, say SSP, algorithm for directed graphs using a simple data structure, say simple scheme, Fibonacci heaps, say F-heap scheme, and Pairing heaps, say P-heap scheme, and measure the relative performance of the three implementations.
标签： implement algorithm Dijkstra Shortest
上传时间： 2014-01-01
上传用户：BIBI
Optimization Modelling A Practical Approach Ruhul A. Sarker Charles S. Newton
标签： 数学建模
上传时间： 2016-02-15
上传用户：jh442755_1
三菱PLC-A-2N解密程序 三菱PLC-A-2N解密程序 三菱PLC-A-2N解密程序
上传时间： 2016-05-16
上传用户：beeping
用于A股 自动交易下单的量化交易
标签： 自动
上传时间： 2016-06-12
上传用户：pfrynwgkq
A belief function distance metric for orderable sets, Information Fusion 14 (4) (2013) 361–373. 期刊论文
上传时间： 2017-10-12
上传用户：ziyoudexiaod
关于NACA0012的CFD仿真文件 Computational Study of Flow Around a NACA 0012 Wing Flapped at Different Flap Angles with Varying Mach Numbers
标签： Computational Around Study 0012 Flow NACA of
上传时间： 2020-05-10
上传用户：nimo1949
