Results 111 to 120 of about 251 (146)

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.
Jungpil Yu, Marie-Laure Boucheret, Robert Vallet, Alban Duverdier, Gilles Mesnager   +4 more
openaire   +1 more source

Design of interleavers for turbo codes: iterative interleaver growth algorithms of polynomial complexity [PDF]

IEEE Transactions on Information Theory, 1999
This paper addresses the problem of designing interleavers for parallel concatenated convolutional codes (PCCC's) tailored to specific constituent codes.
F Daneshgaran, M Mondin
exaly   +2 more sources

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

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

Convolutional interleavers for stream-oriented parallel concatenated convolutional codes

Proceedings. 1998 IEEE International Symposium on Information Theory (Cat. No.98CH36252), 2002
The design of convolutional interleavers (CIs) is considered for a stream-oriented parallel concatenated convolutional coding (PCCC). Design rules are developed for CIs using analysis of the interleaving equations as well as simulation results. Results show that CIs are viable design options which can offer improved performance for low latency designs ...
E.K. Hall, S.G. Wilson
openaire   +1 more source

Interleaver optimization of convolutional turbo code for 802.16 systems

IEEE Communications Letters, 2009
Convolutional turbo code (CTC) has been adopted as an optional channel coding scheme for wireless metropolitan area networks (WMAN) and digital video broadcasting (DVB) owing to its powerful error correction capability and flexibility. In spite of the fact that the internal interleaver of CTC mainly affects the characteristics of the code, interleaving
Sung-Joon Park, Jun-Ho Jeon
openaire   +1 more source

Interleaving for outer convolutional codes in DS-CDMA systems

IEEE Transactions on Communications, 2000
Summary: The paper deals with coding for direct-sequence code-division multiple-access (DS-CDMA) channels. A novel method for interleaver design is introduced that significantly improves the probability of error on Gaussian multiple-access channels.
Brück, Stefan, Sorger, Ulrich, Gligorevic, Snjezana (Prof. Dr.-Ing.), Stolte, Norbert   +3 more
openaire   +1 more source

On the Parallelism of Convolutional Turbo Decoding and Interleaving Interference.

2006
In forward error correction, convolutional turbo codes were introduced to increase error correction capability approaching the Shannon bound. Decoding of these codes, however, is an iterative process requiring high computation rate and latency. Thus, in order to achieve high throughput and to reduce latency, crucial in emerging digital communication ...
Muller, Olivier, Baghdadi, Amer, Jezequel, Michel   +2 more
openaire   +2 more sources

Interleaved Concatenations of Polar Codes With BCH and Convolutional Codes

IEEE Journal on Selected Areas in Communications, 2016
We analyze interleaved concatenation schemes of polar codes with outer binary BCH codes and convolutional codes. We show that both BCH-polar and Conv-polar codes can have a frame error rate that decays exponentially with the code length for all rates up to capacity, which is a substantial improvement in the error exponent over stand-alone polar codes ...
Ying Wang, Krishna R. Narayanan, Yu-Chih Huang   +2 more
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