Results 201 to 210 of about 21,730 (245)

Codes and Turbo Codes

2010
This book is devoted to one of the essential functions of modern telecommunications systems: channel coding or error correction coding. Its main topic is iteratively decoded algebraic codes, convolutional codes and concatenated codes.
Berrou, Claude, Amis Cavalec, Karine, Arzel, Matthieu, Douillard, Catherine, Graell I Amat, Alexandre, Guilloud, Frédéric, Jezequel, Michel, Kerouedan, Sylvie, Langlais, Charlotte, Laot, Christophe, Le Bidan, Raphaël, Saoudi, Samir, Saouter, Yannick, Ould Cheikh Mouhamedou, Youssouf, Maury, Emeric, Glavieux, Alain, Boutillon, Emmanuel, Battail, Gérard   +17 more
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Turbo-SPC codes

IEEE Transactions on Communications, 2001
Summary: This letter is concerned with a family of modified turbo-type codes, referred to as turbo-SPC (single parity check) codes. A technique based on the SPC code is introduced to replace puncturing for rate adjustment. A noticeable feature of the proposed scheme is the significantly reduced decoding complexity compared with the standard punctured ...
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Turbo coded BLAST

Proceedings of the IEEE Information Theory Workshop, 2003
In this paper we investigate turbo coding for BLAST (Bell Labs layered space-time) by encoding single user data streams and transmitting the symbols in different antennas. At the receiver we adopt an MMSE nulling, incremental decoding and soft cancellation approach to decode the symbols.
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Turbo multiuser detection for turbo-coded CDMA

WCNC. 1999 IEEE Wireless Communications and Networking Conference (Cat. No.99TH8466), 2003
An iterative receiver structure is proposed for decoding multiuser information data in a turbo-coded DS-CDMA system. The receiver performs two successive soft-output decisions, achieved by a soft-input soft-output (SISO) multiuser detector and a bank of single-user SISO channel decoders, through an iterative process.
Xiaodong Wang 0001, H. Vincent Poor
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Code-matched interleaver for turbo codes

2004 IEEE Wireless Communications and Networking Conference (IEEE Cat. No.04TH8733), 2004
In this paper, we research the code-matched interleaver's application condition and design method for turbo codes. The innovation is that firstly we give the parameters according to which we devise the code-matched interleavers combined with different generator matrix.
Xilin Zhang, Dongfeng Yuan, Ji Luo
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Code detection in turbo source coding

IEEE Communications Letters, 2006
We consider the lossless compression of binary memoryless sources using a library of turbo codes. The message is compressed by each code and the best result along with the index of the applied code is sent to the decoder. Instead of transmitting the code index, we find a criterion to detect the code index using the transmitted parities.
Javad Haghighat, M. Reza Soleymani, Walaa Hamouda   +2 more
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Turbo Codes and Turbo Equalization

2000
Turbo codes, introduced by Berrou, et al.[Berrou et al., 1993] in 1993, provide large coding gain for the memoryless additive white Gaussian noise (AWGN) channel and bring the system performance to within 1 dB from the Shannon capacity limit [Shannon, 1948]. The superior performance soon caused turbo codes to receive intense study.
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Improved Low Complexity Hybrid Turbo Code: A Modified Turbo Code

2009 Second International Conference on Emerging Trends in Engineering & Technology, 2009
Turbo Convolutional Codes (TCC) are excellent error correcting codes as they show near Shannon capacity performance in communication systems. However, Turbo decoders are computationally complex. Recently, a class of modified Turbo codes called Low Complexity Hybrid Turbo Codes (LCHTC) is proposed with Bit Error Rate (BER) which is almost same as that ...
Archana Bhise, Prakash D. Vyavahare
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Iterative MAP decoding of turbo coded OOK and turbo coded BPPM

GLOBECOM'01. IEEE Global Telecommunications Conference (Cat. No.01CH37270), 2002
Infrared wireless communication and optical communication usually adopt on-off keying (OOK) and pulse position modulation (PPM). In this paper, we present iterative maximum a posteriori probability (MAP) decoding of Turbo coded OOK and Turbo coded binary PPM (BPPM).
Naotake Yamamoto, Tomoaki Ohtsuki
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Turbo Codes

2004
Matthew C. Valenti, Jian Sun
  +6 more sources