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ICASSP
2011
IEEE
12 years 11 months ago
Joint bandwidth and power allocation in cognitive radio networks under fading channels
A problem of joint optimal bandwidth and power allocation in cognitive networks under fading channels is considered. It is assumed that multiple secondary users (SUs) share the sp...
Xiaowen Gong, Sergiy A. Vorobyov, Chintha Tellambu...
MASS
2010
133views Communications» more  MASS 2010»
13 years 5 months ago
USD-FH: Jamming-resistant wireless communication using Frequency Hopping with Uncoordinated Seed Disclosure
Abstract--Spread spectrum techniques (e.g., Frequency Hopping (FH), Direct Sequence Spread Spectrum (DSSS)) have been widely used for anti-jamming wireless communications. Such tec...
An Liu, Peng Ning, Huaiyu Dai, Yao Liu
MOBICOM
2004
ACM
14 years 25 days ago
SSCH: slotted seeded channel hopping for capacity improvement in IEEE 802.11 ad-hoc wireless networks
Capacity improvement is one of the principal challenges in wireless networking. We present a link-layer protocol called Slotted Seeded Channel Hopping, or SSCH, that increases the...
Paramvir Bahl, Ranveer Chandra, John Dunagan
TWC
2008
133views more  TWC 2008»
13 years 7 months ago
Analytical results about the robustness of FMT modulation with several prototype pulses in time-frequency selective fading chann
In this paper we study the performance of Filtered Multitone (FMT) modulation systems in time-frequency selective fading channels. FMT generalizes the OFDM scheme through the deplo...
Andrea M. Tonello, Francesco Pecile
WCNC
2010
IEEE
13 years 11 months ago
Interference Analysis in Time and Frequency Asynchronous Network MIMO OFDM Systems
—It is well known that symbol timing offsets larger than the cyclic prefix as well as carrier frequency offsets between transmitter and receiver stations destroy the orthogonali...
Vincent Kotzsch, Gerhard Fettweis