Results 131 to 140 of about 180,407 (162)

Opportunistic space-time block codes

VTC-2005-Fall. 2005 IEEE 62nd Vehicular Technology Conference, 2005., 2006
Keywords: NCCR-MICS ; NCCR-MICS/CL1 Note: inproceedings Reference LICOS-CONF-2005-005doi:10.1109/VETECF.2005.1558464 Record created on 2006-12-11, modified on 2017-08 ...
Das, S., Al-Dhahir, N., Diggavi, S. N., Calderbank, A. R.   +3 more
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Distributed space-time block coding

GLOBECOM '05. IEEE Global Telecommunications Conference, 2005., 2005
In this paper, a new class of distributed space-time block codes (DSTBCs) is introduced. These DSTBCs are designed for wireless networks which have a large set of single-antenna relay nodes Nscr, but at any given time only a small, a priori unknown subset of nodes SsubeNscr can be active.
S. Yiu, Robert Schober, Lutz Lampe
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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), 2002
Two 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.
Robert W. Heath, Arogyaswami Paulraj, S. Sandhu   +2 more
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On non-linear space-time block codes

IEEE International Conference on Acoustics Speech and Signal Processing, 2002
A number of space-time block codes have been proposed for the quasi-static, flat-fading channel with coherent receiver. All of these block codes are linear codes, i.e., the encoded codeword is a linear function of the input scalar symbols. Here we propose new non-linear space-time block codes, i.e., the codewords are non-linear functions of the input ...
Sandhu, Pandit, Paulraj
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Space time block code for EDGE

IEEE 54th Vehicular Technology Conference. VTC Fall 2001. Proceedings (Cat. No.01CH37211), 2002
Transmit diversity techniques have emerged as a very powerful tool to mitigate the adverse effect of fading in mobile radio communications. In transmission systems with weak channel coding or slow moving mobiles transmit diversity techniques that can improve uncoded transmission are of particular interest. In this paper we apply a space-time block code
Kiran Kuchi, G.P. Mattellini, Pekka Ranta   +2 more
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Semiorthogonal Space–Time Block Codes

IEEE Transactions on Information Theory, 2010
In this paper, a new class of full-diversity, rate-one space-time block codes (STBCs) called semiorthogonal algebraic space-time block codes (SAST codes) is proposed. SAST codes are delay optimal when the number of transmit antennas is even. The SAST codeword matrix has a generalized Alamouti structure where the transmitted symbols are replaced by ...
Chintha Tellambura, Ngoc-Dung Dao
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On the performance of space-time block codes

IEEE VTS 53rd Vehicular Technology Conference, Spring 2001. Proceedings (Cat. No.01CH37202), 2002
Space-time block codes (STBC), that have been introduced by S.M. Alamouti (IEEE Journal on Selected Areas in Communication, vol.16, no.8, p.1451-8, 1998) and V. (IEEE-info, vol.45, 1999), are now considered in the current 3GPP standard as one method to achieve spatial diversity.
M. Stege, Gerhard Fettweis, M. Bronzel
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Differential space-time block codes

GLOBECOM'01. IEEE Global Telecommunications Conference (Cat. No.01CH37270), 2002
We propose a new differential modulation scheme for multiple-antenna systems based on square space-time block codes (STBC) when neither the transmitter nor the receiver knows channel state information. Compared with the known differential unitary space-time modulation (DUSTM), the proposed constellations generally have multiple amplitudes and do not ...
Roger Shu Kwan Cheng, Meixia Tao
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On MIDO Space-Time Block Codes

2007 IEEE International Symposium on Information Theory, 2007
In this paper, the need for the construction of multiple input-double output (MIDO) space-time block codes (STBCs) is discussed, concentrating on the case of four transmitters for simplicity. Above the trivial method, i.e. switching off the extra layers in the usual multiple input-multiple output (MIMO) setting, two smarter yet simple MIDO construction
Camilla Hollanti, Kalle Ranto
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Space-time block codes for noncoherent CPFSK

GLOBECOM '05. IEEE Global Telecommunications Conference, 2005., 2005
In this paper the problem of unitary rate space-time block coding for multiple-input multiple-output communication systems employing continuous phase frequency shift keying is investigated. First, one-shot noncoherent detection is analysed in a maximum likelihood perspective; then, design criteria for optimal space-time codes are proposed and some ...
PANCALDI, Fabrizio, VITETTA, Giorgio Matteo   +1 more
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