Results 141 to 150 of about 3,626 (230)

Analysis of iterative decoding for serial concatenated convolutional codes

open access: closedVehicular Technology Conference Fall 2000. IEEE VTS Fall VTC2000. 52nd Vehicular Technology Conference (Cat. No.00CH37152), 2002
Turbo codes include two kinds of encoding schemes, one is parallel concatenated convolutional codes (PCCC), and another is serial concatenated convolutional codes (SCCC). The SCCC can get better performance than PCCC. The analysis of acquirement of some information for SCCC decoding computation, which is different from PCCC, are presented. Finally, the
Weidong Wang, Chunlong Bai, Ping Zhang
semanticscholar   +4 more sources

Rate-compatible punctured serial concatenated convolutional codes

GLOBECOM '03. IEEE Global Telecommunications Conference (IEEE Cat. No.03CH37489), 2004
We propose and compare some good rate-compatible serial concatenated convolutional code (SCCC) families. To obtain rate-compatible SCCCs, the puncturing is limited to inner coded bits. However, and this is the novelty proposed, we do not limit the puncturing to inner parity bits only, but we extend it also to inner systematic bits, thus obtaining ...
BABICH, FULVIO   +2 more
openaire   +4 more sources

On the design of binary serially concatenated convolutional codes

open access: closed1999 IEEE Communications Theory Mini-Conference (Cat. No.99EX352), 1999
The serial concatenation of simple binary convolutional codes through an interleaver is a technique that yields, through iterative decoding, performance similar to, and in some cases better than, those of turbo codes (parallel concatenated convolutional codes).
Sergio Benedetto   +3 more
openalex   +3 more sources

Design of rate-compatible punctured serial concatenated convolutional codes

2004 IEEE International Conference on Communications (IEEE Cat. No.04CH37577), 2004
A new design criterion to obtain well performing rate-compatible serial concatenated convolutional codes (SCCC) families is proposed. To obtain rate-compatible SCCCs, the puncturing is limited to inner coded bits. However, the puncturing is not restricted to inner parity bits, but extended also to inner systematic bits, thus obtaining high rate SCCCs ...
BABICH, FULVIO   +2 more
openaire   +5 more sources

Iterative decoding of serially concatenated convolutional codes and MSK

open access: closedIEEE Communications Letters, 1999
The performance of iterative decoding and demodulation of serially concatenated convolutional codes and minimum shift keying (MSK) is studied. It is shown that by appropriately combining the trellises of MSK and the inner code, a high performance coded modulation system can be achieved.
Victor F. Szeto, S. Pasupathy
openalex   +3 more sources

An iterative decoding scheme for serially concatenated convolutional codes

open access: closedProceedings of 1995 IEEE International Symposium on Information Theory, 2002
We present an iterative soft-output decoding algorithm for serially concatenated convolutional codes which has better performance than the conventional noniterative decoding algorithm. The proposed Viterbi decoding scheme can be used whenever some form of serial concatenation of encoders and channels with memory is applied.
Mohamed Siala   +3 more
openalex   +3 more sources

Performance of Serial Concatenated Convolutional Codes on faded channels

International Conference on Information Society (i-Society 2011), 2011
An analysis of performance of Serially Concatenated Convolutional Codes (SCCC) is evaluated on Additive White Gaussian Noise model channel, which is used as a basis, and actions of SCCC on Raleigh flat slow and flat fast faded channels are evaluated in this research work. In DCS the SCCC are utilized to reduce the bit error rates. SCCC encoder consists
Hanan Adeel   +3 more
openaire   +3 more sources

Iterative MAP decoding for serial concatenated convolutional codes

IEE Proceedings - Communications, 1998
The paper provides detailed computational steps for implementing an iterative serial concatenated convolutional code (SCCC) decoder. These are based on maximum a posteriori probability (MAP) decoding of a single, rate 1/2, recursive, systematic convolutional code, which is reduced to easily implemented equations for forward and backward recursion.
A. Ambroze, G. Wade, Martin Tomlinson
openaire   +3 more sources

Performance of serial concatenated convolutional codes for data transmission in UMTS

1999 IEEE 49th Vehicular Technology Conference (Cat. No.99CH36363), 2003
Serial concatenated convolutional coding with iterative decoding is examined for data transmission over the downlink of a W-CDMA system employing BPSK modulation and coherent RAKE receiver. Performance of serial concatenated convolutional coding is studied in a frequency selective Rayleigh fading channel.
Nguyen Vu Luu   +2 more
openaire   +3 more sources

On parallel and serial concatenated convolutional codes over GF(4)

The 8th International Conference on Communication Systems, 2002. ICCS 2002., 2003
We compare the asymptotic performance of parallel concatenated codes (PCCs) and serial concatenated codes (SCCs) over GF(4). We construct such codes using optimal nonbinary convolutional codes where optimality is in the sense of achieving the largest minimum distance for a fixed number of encoder states.
A. Ghrayeb, T. Abualrub
openaire   +3 more sources

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