Results 111 to 120 of about 157 (142)

Opportunistic cooperative trellis coded modulation

2011 IEEE 19th Signal Processing and Communications Applications Conference (SIU), 2011
In this paper, opportunistic relay selection technique is applied to cooperative multiple trellis coded modulation (CMTCM). The outage probability of the opportunistic CMTCM system is analytically derived and it is shown that it exactly matches with the computer simulation results. The proposed CMTCM system using opportunistic relay selection decreases
Sezgin Sen, Umit Aygolu
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Trellis coding for spatial modulation

2011 IEEE 19th Signal Processing and Communications Applications Conference (SIU), 2011
In this study, by combining trellis coding with spatial modulation (SM), a new multiple-input multiple output (MIMO) communication scheme called trellis coded spatial modulation (TC-SM) is proposed. For uncorrelated Rayleigh fading channels, code design criteria are given by deriving pairwise error probability (PEP) of this system, in which a trellis ...
Ertugrul Basar, Umit Aygolu, Erdal Panayirci, H. Vincent Poor   +3 more
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Six-dimensional trellis-coded modulation

IEEE Global Telecommunications Conference, 1989, and Exhibition. 'Communications Technology for the 1990s and Beyond, 2003
A family of trellis-coded modulation (TCM) schemes is presented which is based on two-step partitioning of six-dimensional (6D) signal constellations. Maximum-likelihood detection of these schemes based on the Viterbi algorithm is described. The asymptotic gain is 3.01 dB for the two-state code, and 4.33 dB for the four- and eight-state codes which ...
A. Chouly, H. Sari
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Trellis Coded Generalized Spatial Modulation

2014 IEEE 79th Vehicular Technology Conference (VTC Spring), 2014
In this paper, a novel trellis coded generalized spatial modulation (TCGSM) scheme is presented and analyzed. Similar to that of the traditional generalized spatial modulation (GSM), a subset of the entire transmit antennas is selected for transmission at each time slot.
You Zhou, Dongfeng Yuan, Xiaotian Zhou, Haixia Zhang   +3 more
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Parallel concatenated trellis coded modulation

Proceedings of ICC/SUPERCOMM '96 - International Conference on Communications, 2002
In this paper, we propose a new solution to parallel concatenation of trellis codes with multilevel amplitude/phase modulations and a suitable bit by bit iterative decoding structure. Examples are given for throughput 2 and 4 bits/sec/Hz with 8 PSK, 16 QAM, and 64 QAM modulations.
BENEDETTO S., DIVSALAR D., MONTORSI, Guido, POLLARA F.   +3 more
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Trellis Coding with Asymmetric Modulations

IEEE Transactions on Communications, 1987
Traditionally symmetric signal constellations, i.e., those with uniformly spaced signal points, have been used for both uncoded and coded systems. Although symmetric signal constellations are optimum with no coding, the same is not necessarily true for coded systems. This paper shows that by designing the signal constellations to be asymmetric, one can,
D. Divsalar, M. Simon, J. Yuen
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Multiple trellis coded modulation (MTCM)

IEEE Transactions on Communications, 1988
The authors demonstrate a trellis coded modulation technique referred to as multiple trellis coded modulation (MTCM) wherein more than one channel symbol per trellis branch is transmitted. They have found simple two-state trellis codes for symmetric MPSK multiple phase-shift keying and AM modulations that can achieve 3-dB gain over uncoded modulation ...
D. Divsalar, M.K. Simon
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Trellis coded quadrature spatial modulation

Physical Communication, 2018
Abstract In this paper, a novel multiple-input multiple-output (MIMO) transmission scheme called trellis coded quadrature spatial modulation (TC-QSM), is proposed. In the proposed scheme, trellis coded modulation (TCM) principle is applied to the emerging quadrature spatial modulation (QSM) scheme, and a trellis encoder and a QSM mapper are jointly ...
Zehra Yigit, Ertugrul Basar, Raed Mesleh
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Asymmetric trellis coded modulation (ATCM)

[Proceedings] Singapore ICCS/ISITA `92, 1992
Presents a method for designing trellis coded modulation with asymmetric trellis wherein the transitions have non-uniform number of parallel paths. In the design the encoding data is firstly mapped to an asymmetric trellis by using a prefix code; then the trellis is mapped to a 2N-dimensional constellation.
S.H. Leung, null Xin Jin
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A Pragmatic Approach to Trellis-Coded Modulation

IEEE Communications Magazine, 1989
Since the early 1970s, for power-limited applications, the convolutional code constraint length K=7 and rate 1/2, optimum in the sense of maximum free distance and minimum number of bit errors caused by remerging paths at the free distance, has become the de facto standard for coded digital communication.
A.J. Viterbi, J.K. Wolf, E. Zehavi, R. Padovani   +3 more
openaire   +1 more source