Results 131 to 140 of about 805 (178)

Selectable delay turbo decoding

2000 IEEE International Symposium on Information Theory (Cat. No.00CH37060), 2002
We present a method for selectable delay turbo coding that, using a common serially-concatenated encoding operation with interleavers of growing lengths, allows decoders having differing latency constraints to achieve decoding power commensurate with that delay.
S.G. Wilson, M. Kaya
openaire   +1 more source

Energy-efficient turbo decoder

IEEE International Conference on Acoustics Speech and Signal Processing, 2002
Turbo codes have been recently adopted in the next generation of wideband CDMA standards. These codes achieve superior performance at the expense of high computational complexity. This makes their low energy implementation a very important yet challenging problem.
Jagadeesh Kaza, Chaitali Chakrabarti
openaire   +2 more sources

LTE turbo decoder design

Journal of Semiconductors, 2015
This paper presents a turbo decoder supporting all 188 block sizes in 3GPP long term evolution (LTE) standard which can be employed in the LTE micro-eNodB system. The design allows 1, 2, 4, 8 or 16 soft-in/soft-out (SISO) decoders to concurrently process each block size, and the number of iterations can be adjusted.
Le Yang, Tianchun Ye, Bin Wu, Ruiqi Zhang   +3 more
openaire   +1 more source

Improvements in Turbo Decoding

IETE Journal of Research, 2002
In recent years iterative concatenated decoding has regained popularity starting with the remarkable results presented in a paper by a group of French researchers. They introduced a new family of convolutional codes, nicknamed "Turbo codes" due to its resemblance with the turbo engine.
Bhuwanendra Kumar, Vishwanath Sinha
openaire   +1 more source

Turbo decoder implementation

IEEE 54th Vehicular Technology Conference. VTC Fall 2001. Proceedings (Cat. No.01CH37211), 2002
Recently, turbo code has gathered much attention for its outstanding performance. However, its complexity and decoding latency are severe drawbacks. Turbo code has been adopted in the 3GPP specification as one of the channel coding schemes. To implement a turbo decoder compliant with the 3GPP specification, the author adopted the sliding window method ...
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Fast Decodable Turbo Codes

IEEE Communications Letters, 2007
Decoding delay is an important consideration for the use of turbo codes in practical applications. We propose a new structure for turbo codes which is very suitable for parallel decoding. It is shown by union bound analysis and simulation results that the proposed system performance is comparable to that of the classical turbo ...
Orhan Gazi, A. Ylmaz
openaire   +1 more source

Optimized MAP turbo decoder

2000 IEEE Workshop on SiGNAL PROCESSING SYSTEMS. SiPS 2000. Design and Implementation (Cat. No.00TH8528), 2002
The very powerful turbo codes are a breakthrough in coding theory. The implementation of the iterative turbo decoder however hampers their incorporation in real systems. We tackle this problem by optimizing the decoder on two levels: the separate decoder modules and the global decoder system.
C. Schurgers, F. Catthoor, M. Engels
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Interative (“turbo”) decoding of threshold decodable codes

European Transactions on Telecommunications, 1995
AbstractIn this paper we extend the idea of iterative decoding of two‐dimensional systematic convolutional codes ‐ so‐called “turbo” codes ‐ to threshold decoding. A threshold decoding algorithm is presented which uses soft information from the channel and a priori values in order to generate soft outputs.
Sven Riedel, Yuri V. Svirid
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Adaptive Iterative Turbo Decoding Algorithm

2006 IEEE 63rd Vehicular Technology Conference, 2006
Turbo decoding has large iteration delay. Based on tail bits of turbo codes, a low-complexity adaptive iterative decoder is proposed for turbo codes in this paper. In the proposed algorithm, tail bits work as CRC bits to detect whether the decoding succeeds or not.
null Jian Gu, null Yi Zhang, null Dacheng Yang, null Zhen Liu   +3 more
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Interleaver for High Parallelizable Turbo Decoder

2007
In this paper a new interleaver is proposed as turbo codes intern interleaver. This interleaver designed from shifted identity matrices has been developed to facilitate implementation of parallelized turbo decoding. The structure is first illustrated and then, implementation aspects are discussed.
Boher, Laurent, Doré, Jean-Baptiste, Hélard, Maryline, Gallard, C.   +3 more
openaire   +2 more sources