Secure Collision-Free Frequency Hopping for OFDMA-Based Wireless Networks
نویسندگان
چکیده
منابع مشابه
Secure Collision-Free Frequency Hopping for OFDMA-Based Wireless Networks
This paper considers highly efficient antijamming system design using secure dynamic spectrum access control. First, we propose a collision-free frequency hopping (CFFH) system based on the OFDMA framework and an innovative secure subcarrier assignment scheme. The CFFH system is designed to ensure that each user hops to a new set of subcarriers in a pseudorandom manner at the beginning of each ...
متن کاملA Secure Routing Algorithm for Underwater Wireless Sensor Networks
Recently, underwater Wireless Sensor Networks (UWSNs) attracted the interest of many researchers and the past three decades have held the rapid progress of underwater acoustic communication. One of the major problems in UWSNs is how to transfer data from the mobile node to the base stations and choosing the optimized route for data transmission. Secure routing in UWSNs is necessary for packet d...
متن کاملA Highly Efficient Secure Communication Interface : Collision - Free Frequency Hopping ( CFFH )
Frequency hopping systems have been widely used in military communications to prevent hostile jamming, interception and detection. In traditional frequency hopping (FH) systems, the transmitter hops in a pseudo-random manner among available frequencies according to a pre-specified algorithm, and the receiver operates accordingly in exact synchronization with the transmitter's hopping pattern. I...
متن کاملGeneralized frequency hopping OFDMA through unknown frequency-selective multipath channels
The Generalized Frequency Hopping (GFH) OFDMA system developed in this paper permeates FH bene ts to multicarrier CDMA transmissions through unknown frequencyselective multipath channels. No single user su ers from consistent fading e ects and multiuser interference is eliminated by design. Constellation-irrespective channel identi ability is guaranteed, and a host of blind channel estimation a...
متن کاملFrequency Hopping Pattern Recognition Algorithms for Wireless Sensor Networks
Frequency Hopping Spread Spectrum (FHSS) as a communications technique has also been considered as one of security mechanisms to provide a good level of security against eavesdroppers in wireless sensor networking environment. We claim that the version presently used in wireless sensor communications does not yield a high level of security. In this paper, we develop algorithms to break the FHSS...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: EURASIP Journal on Advances in Signal Processing
سال: 2009
ISSN: 1687-6180
DOI: 10.1155/2009/361063