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Wireless Communications

by Andrea Goldsmith , 2005
"... ..."
Abstract - Cited by 1178 (30 self) - Add to MetaCart
Abstract not found

Fundamentals of Wireless Communications

by David Tse, Pramod Viswanath , 2004
"... ..."
Abstract - Cited by 1526 (16 self) - Add to MetaCart
Abstract not found

Cognitive Radio: Brain-Empowered Wireless Communications

by Simon Haykin , 2005
"... Cognitive radio is viewed as a novel approach for improving the utilization of a precious natural resource: the radio electromagnetic spectrum. The cognitive radio, built on a software-defined radio, is defined as an intelligent wireless communication system that is aware of its environment and use ..."
Abstract - Cited by 1541 (4 self) - Add to MetaCart
Cognitive radio is viewed as a novel approach for improving the utilization of a precious natural resource: the radio electromagnetic spectrum. The cognitive radio, built on a software-defined radio, is defined as an intelligent wireless communication system that is aware of its environment

A Simple Transmit Diversity Technique for Wireless Communications

by S. M. Alamouti , 1998
"... This paper presents a simple two-branch transmit diversity scheme. Using two transmit antennas and one receive antenna the scheme provides the same diversity order as maximal-ratio receiver combining (MRRC) with one transmit antenna, and two receive antennas. It is also shown that the scheme may ea ..."
Abstract - Cited by 2127 (0 self) - Add to MetaCart
This paper presents a simple two-branch transmit diversity scheme. Using two transmit antennas and one receive antenna the scheme provides the same diversity order as maximal-ratio receiver combining (MRRC) with one transmit antenna, and two receive antennas. It is also shown that the scheme may easily be generalized to two transmit antennas and w receive antennas to provide a diversity order of 2w. The new scheme does not require any bandwidth expansion any feedback from the receiver to the transmitter and its computation complexity is similar to MRRC.

On limits of wireless communications in a fading environment when using multiple antennas

by G. J. Foschini, M. J. Gans - Wireless Personal Communications , 1998
"... Abstract. This paper is motivated by the need for fundamental understanding of ultimate limits of bandwidth efficient delivery of higher bit-rates in digital wireless communications and to also begin to look into how these limits might be approached. We examine exploitation of multi-element array (M ..."
Abstract - Cited by 2426 (14 self) - Add to MetaCart
Abstract. This paper is motivated by the need for fundamental understanding of ultimate limits of bandwidth efficient delivery of higher bit-rates in digital wireless communications and to also begin to look into how these limits might be approached. We examine exploitation of multi-element array

Habitat monitoring: application driver for wireless communications technology

by Alberto Cerpa, Jeremy Elson, Deborah Estrin, Lewis Girod - In ACM SIGCOMM Workshop on Data Communications in Latin America and the Caribbean , 2001
"... lecs.cs.ucla.edu As new fabrication and integration technologies reduce the cost and size of micro-sensors and wireless interfaces, it becomes feasible to deploy densely distributed wireless networks of sensors and actuators. These systems promise to revolutionize biological, earth, and environmenta ..."
Abstract - Cited by 424 (39 self) - Add to MetaCart
lecs.cs.ucla.edu As new fabrication and integration technologies reduce the cost and size of micro-sensors and wireless interfaces, it becomes feasible to deploy densely distributed wireless networks of sensors and actuators. These systems promise to revolutionize biological, earth

Wireless Communications

by Andreas Molisch, Andreas F. Molisch , 2005
"... The performance of Ultrawideband (UWB) communications systems is determined by the propagation channels they operate in. This paper gives an overview of UWB channels and their impact on system design. The emphasis lies on (i) multiple antenna systems and (ii) body-area networks. We discuss the frequ ..."
Abstract - Cited by 142 (17 self) - Add to MetaCart
The performance of Ultrawideband (UWB) communications systems is determined by the propagation channels they operate in. This paper gives an overview of UWB channels and their impact on system design. The emphasis lies on (i) multiple antenna systems and (ii) body-area networks. We discuss

Space-time codes for high data rate wireless communication: Performance criterion and code construction

by Vahid Tarokh, Nambi Seshadri, A. R. Calderbank - IEEE TRANS. INFORM. THEORY , 1998
"... We consider the design of channel codes for improving the data rate and/or the reliability of communications over fading channels using multiple transmit antennas. Data is encoded by a channel code and the encoded data is split into n streams that are simultaneously transmitted using n transmit ant ..."
Abstract - Cited by 1782 (28 self) - Add to MetaCart
for high data rate wireless communication. The encoding/decoding complexity of these codes is comparable to trellis codes employed in practice over Gaussian channels. The codes constructed here provide the best tradeoff between data rate, diversity advantage, and trellis complexity. Simulation results

Wireless Communication

by Rupali Dhobale, Kalyani Ghate, Nikhil Pimpalgaonkar, R. B. Khule
"... Abstract: Viterbi algorithm is employed in wireless communication to decode the Convolution codes; those codes are used in every robust digital communication systems. Such decoders are complex & dissipate large amount of power. Thus the paper presents the design of an Adaptive Viterbi Decoder (A ..."
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Abstract: Viterbi algorithm is employed in wireless communication to decode the Convolution codes; those codes are used in every robust digital communication systems. Such decoders are complex & dissipate large amount of power. Thus the paper presents the design of an Adaptive Viterbi Decoder

Space-time block coding for wireless communications: performance results

by Vahid Tarokh, Hamid Jafarkhani, A. Robert Calderbank - IEEE J. Select. Areas. Commun , 1999
"... Abstract—We document the performance of space–time block codes [13], [14], which provide a new paradigm for transmission over Rayleigh fading channels using multiple transmit antennas. Data is encoded using a space–time block code, and the encoded data is split into n streams which are simultaneousl ..."
Abstract - Cited by 369 (13 self) - Add to MetaCart
their performance. It is shown that using multiple transmit antennas and space–time block coding provides remarkable performance at the expense of almost no extra processing. Index Terms — Diversity, multipath channels, multiple antennas, space–time codes, wireless communication. I.
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