Results 201 to 210 of about 11,848 (246)

Combined turbo equalisation and block turbo coded modulation

IEE Proceedings - Communications, 2003
The combination of equalisation and turbo decoded M-QAM is studied. In a system of block turbo coding based on iterative decoding of a product code, equalisation is incorporated in the decoding iteration loop. Most research in this area has considered the trellis equaliser. When using a high throughput modulation trellis equalisation is impossible. The
M. Noorbakhsh, K. Mohamed-Pour
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Non-Binary Turbo Coded Spatial Modulation

2013 IEEE 78th Vehicular Technology Conference (VTC Fall), 2013
Non-binary symbol transmission such as Ternary Phase Shift Keying (TPSK) and Hexagonal Quadrature Amplitude Modulation (HQAM) can achieve the superior performance to the PSK or square QAM in the band-limited and peak-to-average power ratio (PAPR) limited channel due to its excellent natures of PAPR, spurious characteristic, and minimum Euclidean ...
Shigeaki Hashimoto, Koji Ishii, Shigeaki Ogose   +2 more
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Space-frequency-time turbo coded modulation

IEEE Communications Letters, 2001
A new bandwidth and power efficient signaling scheme is proposed that achieves high data rates over wideband radio channels exploiting the bandwidth efficient OFDM modulation, multiple transmit and receive antennas and large frequency selectivity offered in typical low mobility indoor environments. Owing to its maximum transmit diversity gain and large
Djordje Tujkovic, Markku J. Juntti, Matti Latva-aho   +2 more
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Combined multilevel Turbo-code with MR-modulation

Proceedings IEEE International Conference on Communications ICC '95, 2002
Different concepts of iterative decoding algorithms for multi-dimensional coding, serial or parallel concatenated coding (called Turbo-code) as well as for the case of generalized concatenated coding schemes have previously been introduced. In order to achieve high performance expected by Turbo-codes and to assume a great flexibility, the present ...
Fazel, K., Papke, L.
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Turbo Trellis-Coded Differential Chaotic Modulation

IEEE Transactions on Circuits and Systems II: Express Briefs, 2018
In this brief, a novel turbo trellis-coded differential chaotic modulation (TTC-DCM) system is proposed, where parallel concatenated trellis codes are combined with the ${M}$ -ary differential chaotic shift keying ( ${M}$ -ary DCSK) scheme.
Chenglong Zhou, Wei Hu 0009, Lin Wang 0003, Guanrong Chen   +3 more
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A nonpragmatic approach to turbo trellis coded modulations

2002 IEEE International Conference on Communications. Conference Proceedings. ICC 2002 (Cat. No.02CH37333), 2003
A novel approach to combine turbo coding and high level modulation is introduced. Systematic trellis coded M-ary modulations are used as constituent codes. This scheme is a direct generalization to M-ary modulations of binary turbo codes. As a result, the whole iterative process is performed at M-ary symbol level.
Antoine Chouly, Olivier Pothier
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Turbo trellis-coded spatial modulation

2012 IEEE Global Communications Conference (GLOBECOM), 2012
In this paper, a turbo trellis-coded spatial modulation (TTCSM) transmission scheme is proposed. In trellis-coded spatial modulation (TCSM) scheme, the information bits used to select the transmit antenna index are encoded. In order to increase the performances of the TCSM scheme, a parallel concatenated encoding scheme can be used. Therefore, the TCSM
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Evaluating the performance of turbo codes and turbo-coded modulation in a DS-CDMA environment

IEEE Journal on Selected Areas in Communications, 1999
Turbo codes have received great attention due to their outstanding performance. Unfortunately, a high performance is associated with large transmission delays, prohibiting an application for speech transmission. Hence, the aim of this paper is the comparison of turbo codes employing short interleavers with convolutional codes in terms of bit error rate
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QAM modulations withq-ary turbo codes

Science in China Series E: Technological Sciences, 1997
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Zhang, Yuwei, Wang, Xinmei
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Adaptive Modulation and Code Rate for Turbo Coded OFDM Transmissions

2007 IEEE 65th Vehicular Technology Conference - VTC2007-Spring, 2007
This paper discusses the application of adaptive modulation and adaptive rate turbo-coding to OFDM (orthogonal frequency-division multiplexing), to enable a closer approach to the Shannon capacity of the time and frequency selective channel. The adaptive turbo-code scheme is based on a subband adaptive method, and compares two adaptation algorithms: a ...
Lei Ye 0001, Alister G. Burr
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