Results 61 to 70 of about 5,976 (210)
SPACE TIME CODING FOR TRELLIS CODED MODULATION IN ADDITIVE WHITE GAUSSIAN CHANNELS
Electrica, 2003 In this study, Trellis Coded Modulation (TCM) technique is combined with Space Time Codes (STC) and error performance is investigated in Additive White Gaussian (AWGN) channels. For this purpose a different receiver structure is proposed and mathematical
Ömer ERKAN +2 more
doaj +2 more sources
Mapping Rearrangement for Parallel Concatenated Trellis Coded Modulation
EURASIP Journal on Wireless Communications and Networking, 2008 Mapping rearrangement (MaRe) for the hybrid ARQ (HARQ) based on the parallel concatenated trellis coded modulation (PCTCM) is analyzed. We demonstrate that the performance of the PCTCM receiver is intrinsically limited by the MaRe design and we propose a
Benjillali Mustapha, Szczecinski Leszek
doaj
IEEE Photonics Journal, 2012 We propose a scheme that can attain the same transmission bit rate as the corresponding conventional polarization-division-multiplexed (PDM) quadrature amplitude modulation (QAM) scheme while occupying lower bandwidth and, hence, achieving a higher ...
Murat Arabaci +3 more
doaj +1 more source
Multiple trellis coded modulation [PDF]
, 1990 A technique for designing trellis codes to minimize bit error performance for a fading channel. The invention provides a criteria which may be used in the design of such codes which is significantly different from that used for average white Gaussian ...
Divsalar, Dariush, Simon, Marvin K.
core +1 more source
Coding of PPM based modulation techniques to improve the performance of infrared WLAN's [PDF]
, 2000 In this communication we consider the use of PPM based modulation methods, such as the hybrid modulation method called Amplitude and Pulse-Position Modulation (APPM) and Overlapping Pulse-Position Modulation (OPPM), to improve the performance of ...
Alves, Rui, Gameiro, Atilio
core +1 more source
Concatenated Space Time Block Codes and TCM, Turbo TCM Convolutional as well as Turbo Codes
, 2000 Space-time block codes provide substantial diversity advantages for multiple transmit antenna systems at a low decoding complexity. In this paper, we concatenate space-time codes with Convolutional Codes (CC), Turbo Convolutional codes (TC), Turbo BCH ...
Hanzo, L. +4 more
core
TRELLIS CODED MAPPING FOR PEAK TO AVERAGE POWER REDUCTION IN SFBC MIMO OFDM SYSTEMS
ICTACT Journal on Communication Technology, 2016 Space frequency block code orthogonal frequency division multiplexing (SFBC-OFDM) systems has inherit drawbacks of high peak-to average power ratio (PAPR) signals, and constellation shaping with trellis is a promising approach for reducing both peak ...
P. N. Kota, A. N. Gaikwad, B. P. Patil
doaj
Three-Dimensional EXIT Chart Analysis of Iterative Detection Aided Coded Modulation Schemes
, 2006 The iterative convergence of iteratively detected coded modulation schemes having different block lengths, decoding complexity and an unequal error protection capability is studied, when communicating over AWGNchannels using 8PSK modulation.
Hanzo, L., Ng, S.X., Tee, R.Y.S.
core
A Low-Complexity Approach to Space-Time Coding for Multipath Fading Channels
EURASIP Journal on Wireless Communications and Networking, 2005 We consider a single-carrier multiple-input single-output (MISO) wireless system where the transmitter is equipped with multiple antennas and the receiver has a single antenna.
Kobayashi Mari, Caire Giuseppe
doaj +2 more sources
Flexible digital modulation and coding synthesis for satellite communications [PDF]
An architecture and a hardware prototype of a flexible trellis modem/codec (FTMC) transmitter are presented. The theory of operation is built upon a pragmatic approach to trellis-coded modulation that emphasizes power and spectral efficiency.
Budinger, James +3 more
core +1 more source