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IJNSEC
2008
75views more  IJNSEC 2008»
15 years 6 months ago
A Key Management Scheme for Hierarchical Access Control in Group Communication
In group communication, users often have different access rights to multiple data streams. Based on the access relation of users and data streams, users can form partially ordered...
Qiong Zhang, Yuke Wang, Jason P. Jue
JSAC
2008
85views more  JSAC 2008»
15 years 6 months ago
Efficient Multicarrier Communication for Highly Spread Underwater Acoustic Channels
In this paper we propose a novel method for communication over underwater acoustic channels that exhibit simultaneously large delay spread and Doppler spread, such as those found i...
Sung-Jun Hwang, Philip Schniter
JSAC
2008
92views more  JSAC 2008»
15 years 6 months ago
Multiband OFDM for Covert Acoustic Communications
A multiband OFDM transmitter and receiver are presented for underwater communications at low SNR. Compared with a single-band OFDM scheme, the multiband approach leads to a conside...
Geert Leus, Paul A. van Walree
JSAC
2006
101views more  JSAC 2006»
15 years 6 months ago
Distributed space-time coding for multihop transmission in power line communication networks
In this paper, we consider transmission in relatively wide-stretched power line communication (PLC) networks, where repeaters are required to bridge the source-to-destination dista...
Lutz H.-J. Lampe, Robert Schober, Simon Yiu
TWC
2008
104views more  TWC 2008»
15 years 6 months ago
Multiple symbol differential detection for UWB communications
In ultra-wideband (UWB) communications, the typical signal propagation through dense multipath fading offers potentially very large multipath diversity, but at the same time compl...
Vincenzo Lottici, Zhi Tian