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Space-time block codes versus space-time trellis codes
ICC 2001. IEEE International Conference on Communications. Conference Record (Cat. No.01CH37240), 2002Two outstanding examples of transmit diversity schemes for the multiple-antenna flat-fading channel are space-time block coding (STBC) and space-time trellis coding (STTC). We compare the performance of STBC and STTC in terms of the frame error rate keeping the transmit power, spectral efficiency and number of trellis states fixed.
S. Sandhu, R. Heath, A. Paulraj
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Universal space-time trellis codes
Global Telecommunications Conference, 2002. GLOBECOM '02. IEEE, 2003This article gives practical examples of space-time trellis codes performing as predicted by Root and Varaiya's (1968) compound channel theorem. Specifically, 32-state and 64-state 2/spl times/2 space-time trellis codes are presented that provide a bit-error rate (BER) of 10/sup -5/ on all 2/spl times/2 matrix channels with an excess mutual information
C. Kose, R.D. Wesel
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Trace-Orthogonal Space-Time Coding
IEEE Transactions on Signal Processing, 2008In this paper, we prove that, in MIMO systems affected by flat fading, when the channel is unknown at the transmitter and known at the receiver side, a space-time code does not induce any information loss, regardless of the channel realization, if and only if it is a trace-orthogonal design (TOD).
Antonio Fasano, BARBAROSSA, Sergio
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Space time coded MIMO network coding
2008 IEEE 19th International Symposium on Personal, Indoor and Mobile Radio Communications, 2008Efficient bi-directional multi-hop wireless networks based on MIMO algorithm or network coding have been proposed in recent literatures. In this paper, a new technique named as MIMO network coding, that is a combination of network coding and MIMO algorithm, will be proposed.
Fumie Ono, Kei Sakaguchi
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Proceedings of the 2007 international conference on Wireless communications and mobile computing, 2007
We consider decode and forward strategy in the relay channel, where in the first time interval the source communicates its message to its neighboring relays, and in the second time interval, the relays form a distributed space-time code and forward the source message to the destination.
Mohamed Oussama Damen, Roger Hammons
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We consider decode and forward strategy in the relay channel, where in the first time interval the source communicates its message to its neighboring relays, and in the second time interval, the relays form a distributed space-time code and forward the source message to the destination.
Mohamed Oussama Damen, Roger Hammons
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Physical Review, 1969
It is known that the entire geometry of many relativistic space-times can be summed up in two concepts, a space-time measure $\ensuremath{\mu}$ and a space-time causal or chronological order relation $C$, defining a causal measure space. On grounds of finiteness, unity, and symmetry, we argue that macroscopic space-time may be the classical-geometrical
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It is known that the entire geometry of many relativistic space-times can be summed up in two concepts, a space-time measure $\ensuremath{\mu}$ and a space-time causal or chronological order relation $C$, defining a causal measure space. On grounds of finiteness, unity, and symmetry, we argue that macroscopic space-time may be the classical-geometrical
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Convolutional Space-Time Codes
2006 Canadian Conference on Electrical and Computer Engineering, 2006Space-time codes are usually generated using a generator matrix with 2 columns and mod 4 operations for QPSK modulation with two transmit antennas. A Z4 convolutional code has also been used to represent these space-time codes. Another way of representing them is to use a conventional binary convolutional code of rate 2/4.
David Bernier, Francois Chan
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Physical Review D, 1974
The concept of a quantum dynamics is recapitulated. The Dirac equation is obtained from a pure quantum dynamics as the limit of classical time. The theory is defective in projective gauge invariance and semantic consistency, but illustrates the relation between dynamical and experimental elements of q dynamics, and is finite, Lorentz-invariant, and ...
David Finkelstein +2 more
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The concept of a quantum dynamics is recapitulated. The Dirac equation is obtained from a pure quantum dynamics as the limit of classical time. The theory is defective in projective gauge invariance and semantic consistency, but illustrates the relation between dynamical and experimental elements of q dynamics, and is finite, Lorentz-invariant, and ...
David Finkelstein +2 more
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Proceedings. International Symposium on Information Theory, 2005. ISIT 2005., 2005
Rateless codes are good codes of infinite length that have the property that prefixes of such codes are themselves good codes. This makes them attractive for applications in which the channel quality is uncertain, where systems transmit as much of a codeword as necessary for decoding to be possible.
U. Erez, G.W. Wornell, M.D. Trott
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Rateless codes are good codes of infinite length that have the property that prefixes of such codes are themselves good codes. This makes them attractive for applications in which the channel quality is uncertain, where systems transmit as much of a codeword as necessary for decoding to be possible.
U. Erez, G.W. Wornell, M.D. Trott
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2015
In MIMO systems, diversity can be achieved by repetition coding, in which different antennas at the transmitter transmit the same information at different time slots. The space–time (ST) coding is more bandwidth-efficient coding scheme, which transmits an information symbol block in a different order from each antenna.
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In MIMO systems, diversity can be achieved by repetition coding, in which different antennas at the transmitter transmit the same information at different time slots. The space–time (ST) coding is more bandwidth-efficient coding scheme, which transmits an information symbol block in a different order from each antenna.
openaire +1 more source