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ICASSP
2011
IEEE
8 years 3 months ago
Cooperation strategies for secrecy in MIMO relay networks with unknown eavesdropper CSI
We investigate secure communications for a four-node relayeavesdropper channel with multiple data stream transmission, assuming that the eavesdropper’s channel state information...
Jing Huang, A. Lee Swindlehurst
TSP
2010
8 years 6 months ago
Improving wireless physical layer security via cooperating relays
Physical (PHY) layer security approaches for wireless communications can prevent eavesdropping without upper layer data encryption. However, they are hampered by wireless channel c...
Lun Dong, Zhu Han, Athina P. Petropulu, H. Vincent...
TON
2010
107views more  TON 2010»
8 years 6 months ago
Leveraging Dynamic Spare Capacity in Wireless Systems to Conserve Mobile Terminals' Energy
In this paper we study several ways in which mobile terminals can backoff on their uplink transmit power in order to extend battery lifetimes. This is particularly effective when a...
Hongseok Kim, Gustavo de Veciana
TON
2010
113views more  TON 2010»
8 years 6 months ago
Transmit Power Estimation Using Spatially Diverse Measurements Under Wireless Fading
Abstract--Received power measurements at spatially distributed monitors can be usefully exploited to deduce various characteristics of active wireless transmitters. In this paper, ...
Murtaza Zafer, Bongjun Ko, Ivan Wang Hei Ho
TCOM
2010
162views more  TCOM 2010»
8 years 6 months ago
Power Allocation in MMSE Relaying over Frequency-Selective Rayleigh Fading Channels
Abstract--This paper develops an amplify-and-forward relaying scheme for multiuser wireless cooperative networks under frequency-selective block-fading. Single-carrier frequency di...
Tung T. Pham, Ha H. Nguyen, Hoang Duong Tuan
IJDMBC
2010
115views more  IJDMBC 2010»
8 years 6 months ago
Near Optimum Power Control and Precoding under Fairness Constraints in Network MIMO Systems
Abstract--We consider the problem of setting the uplink signalto-noise-and-interference (SINR) target and allocating transmit powers for mobile stations in multicell spatial multip...
Gábor Fodor, Mikael Johansson, Pablo Soldat...
CORR
2010
Springer
92views Education» more  CORR 2010»
8 years 8 months ago
Energy-Efficient Precoding for Multiple-Antenna Terminals
Abstract--The problem of energy-efficient precoding is investigated when the terminals in the system are equipped with multiple antennas. Considering static and fast-fading multipl...
Elena Veronica Belmega, Samson Lasaulce
CORR
2010
Springer
127views Education» more  CORR 2010»
8 years 9 months ago
Towards a communication-theoretic understanding of system-level power consumption
Traditional communication theory focuses on minimizing transmit power. However, communication links are increasingly operating at shorter ranges where transmit power can be signif...
Pulkit Grover, Kristen Ann Woyach, Anant Sahai
CORR
2010
Springer
115views Education» more  CORR 2010»
8 years 10 months ago
Broadcasting with an Energy Harvesting Rechargeable Transmitter
In this paper, we investigate the transmission completion time minimization problem in a two-user additive white Gaussian noise (AWGN) broadcast channel, where the transmitter is ...
Jing Yang, Omur Ozel, Sennur Ulukus
JCM
2007
129views more  JCM 2007»
8 years 11 months ago
Evolutionary Approach for Efficient Resource Allocation in Multi-User OFDM Systems
– Orthogonal Frequency Division Multiplexing is a promising technology for high data rate transmission in wideband wireless systems for achieving high downlink capabilities in th...
Yenumula B. Reddy, Nandigam Gajendar
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