Results 131 to 140 of about 564,389 (192)

Some lengths for which CPP interleavers have weaker minimum distances than QPP interleavers

Journal of the Franklin Institute, 2020
The objective of this paper is to find an upper bound on the minimum distance for turbo codes with true cubic permutation polynomial (CPP) interleavers for some particular interleaver lengths.
L. Trifina, D. Tarniceriu, Jonghoon Ryu, Ana-Mirela Rotopanescu   +3 more
semanticscholar   +1 more source

Blind Estimation of Convolutional Interleaver Parameters

2012 8th International Conference on Wireless Communications, Networking and Mobile Computing, 2012
Interleaving, an important technique in digital wireless communications systems, is commonly used to improve robustness against burst errors because it provides a form of time diversity. The unitive mathematical model of the convolutional interleaver was presented for the first time and the blind estimation of convolutional interleaving parameters has ...
Yong-qiang Jia, Li-ping Li, You-zhu Li, Lu Gan   +3 more
openaire   +1 more source

Effect of Various Interleavers on Uncoded and Coded OFDM-IDMA over PLC

International Conference on Communication and Electronics Systems, 2020
Power Line Communication (PLC) is growing to be a decent alternative for data transfer, as the wireless channel is bombarded with surge of users every day and also owing to its cost efficiency. The obstacles in PLC i.e.
Priyanka Agarwal, Manoj Kumar Shukla
semanticscholar   +1 more source

Blind identification of convolutional interleaver parameters

2009 7th International Conference on Information, Communications and Signal Processing (ICICS), 2009
Blind identification of parameters in block interleaving has been studied by some researchers. In this paper, we extend the identification algorithm to convolutional type of interleaving. In particular, our algorithm is able to blindly determine the interleaver period, interleaver depth, number of stages in each shift register of interleaver and thus ...
Liru Lu, Kwok Hung Li, Yong Liang Guan
openaire   +1 more source

Viterbi decoder architecture for interleaved convolutional code

Conference Record of the Thirty-Sixth Asilomar Conference on Signals, Systems and Computers, 2002., 2003
Sn area efficient high speed Veterbi decoder architecture, which is based on the state-parallel architecture with register exchange path memory structure, for interleaved convolutional code is proposed By replacing each delay (or storage) element in state metrics memory (or path metrics memory) and path memory (or survival memory) with I delays ...
null Jun Jin Kong, K.K. Parhi
openaire   +1 more source

Interleaver Design for Serial Concatenated Convolutional Codes

IEEE Communications Letters, 2004
In this paper, we present an interleaver design method for SCCC. Our design criterion is to minimize the message-round probability in the SCCC graph which is specially well suited for SCCC. The message-round probability characterizes the message flow in the SCCC graph. By minimizing it, we can get a large interleaving gain.
J. Yu, M.-L. Boucheret, R. Vallet, A. Duverdier, G. Mesnager   +4 more
openaire   +1 more source

Interleaved group convolutions for multitemporal multisensor crop classification

Infrared Physics & Technology, 2019
Abstract The multitemporal observation capability of remote sensing satellites is of increasing importance in crop monitoring. Nowadays we can obtain dense multitemporal data more easily because more and more Earth observation satellites are put into use.
Zhengtao Li, Gang Zhou, Tianxu Zhang
openaire   +1 more source

Convolutional interleaving for digital radio communications

Proceedings of 2nd IEEE International Conference on Universal Personal Communications, 2002
Interleaving enhances the quality of digital transmission over the radio fading channel. This enhancement comes at the cost of introducing additional time-delay, memory space requirements, and system complexity. This paper describes commonly used interleaving techniques.
openaire   +1 more source

Evaluation of interleaving effect on convolutional correcting code

2005 12th IEEE International Conference on Electronics, Circuits and Systems, 2005
We know that the role of the technique of interleaving in the turbo codes is determining, this is due to the fact that the turbo codes have two (or more) decoder elements concatenated in parallel or serially. Each decoder alone can produce series of erroneous bits which, if not scattered on the entire data frame with an interleaving operation, degrade ...
Maher Kouraichi, Amin Toumi, Abdennaceur Kachouri, Lotfi Kamoun   +3 more
openaire   +1 more source

Estimation of Convolutional Interleaver in a Non-cooperative Context

2020 22nd International Conference on Advanced Communication Technology (ICACT), 2020
In this paper, we propose the method for blind estimation of convolutional interleaver parameters in a noncooperative context by analysing repetitive patterns in interleaved sequences. Simulation results verify that proposed method could effectively estimate convolutional interleaver parameters in a noisy environment.
Yoonji Kim, Geunbae Kim, Dongweon Yoon
openaire   +1 more source