Results 121 to 130 of about 1,502 (171)
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2004 IEEE International Symposium on Circuits and Systems (IEEE Cat. No.04CH37512), 2004
Turbo codes are one of the most powerful error correcting codes. The VLSI implementation of Turbo codes for higher decoding speed requires use of parallel architectures. This paper explores the design spaces of both serial and parallel MAP decoders using graphical analysis.
Yuping Zhang, Keshab K. Parhi
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Turbo codes are one of the most powerful error correcting codes. The VLSI implementation of Turbo codes for higher decoding speed requires use of parallel architectures. This paper explores the design spaces of both serial and parallel MAP decoders using graphical analysis.
Yuping Zhang, Keshab K. Parhi
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On List Sequence Turbo Decoding
IEEE Transactions on Communications, 2005An algorithm for decoding Turbo codes that combines conventional Turbo decoding and list sequence maximum a posteriori probability decoding is presented and evaluated. Compared to previous results on this theme, performance improvements in the order of 0.7 dB are obtained for Turbo codes with 514-b pseudorandom interleaving at a frame error rate of 10 ...
C -E W Sundberg
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The geometry of turbo-decoding dynamics [PDF]
IEEE Transactions on Information Theory, 2000 Summary: The spectacular performance offered by turbo codes sparked intense interest in them. A considerable amount of research has simplified, formalized, and extended the ideas inherent in the original turbo code construction. Nevertheless, the nature of the relatively simple ad hoc turbo-decoding algorithm has remained something of a mystery.
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GLOBECOM'01. IEEE Global Telecommunications Conference (Cat. No.01CH37270), 2002
We propose a new turbo code noncoherent detection scheme based on a novel a-priori probability processor (APP). Using this method, many turbo encoders can be used without a change in the code or in the modulation, and without a significant change in the structure of the iterative decoder.
Jacob Vainappel +2 more
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We propose a new turbo code noncoherent detection scheme based on a novel a-priori probability processor (APP). Using this method, many turbo encoders can be used without a change in the code or in the modulation, and without a significant change in the structure of the iterative decoder.
Jacob Vainappel +2 more
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Network-on-Chip for Turbo Decoders
IEEE Transactions on Very Large Scale Integration (VLSI) Systems, 2016The multi-application specific instruction processor (ASIP) architecture is a promising candidate for flexible high-throughput turbo decoders. This brief proposes a network-on-chip (NoC) structure for multi-ASIP turbo decoders. The process of turbo decoding is studied, and the addressing patterns for turbo codes in long term evolution (LTE) and High ...
Yang, Qingqing +3 more
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Turbo decoding of quantized data
IEEE Transactions on Communications, 2002Much of the work on turbo decoding assumes that the decoder has access to infinitely soft (unquantized) channel data. In practice, however, a quantizer is used at the receiver and the turbo decoder must operate on finite precision, quantized data. Hence, the maximum a posteriori (MAP) component decoder which was designed assuming infinitely soft data ...
Udayan Dasgupta, Costas N. Georghiades
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Stochastic Analysis of Turbo Decoding
IEEE Transactions on Information Theory, 2005 This paper proposes a stochastic framework for dynamic modeling and analysis of turbo decoding. By modeling the input and output signals of a turbo decoder as random processes, we prove that these signals become ergodic when the block size of the code becomes very large.
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Turbo-decoder quantization for UMTS
IEEE Communications Letters, 2001The use of turbo codes is proposed for high-rate data services in third generation wireless communication systems. Bit-true models are mandatory for hardware and software implementations. In this paper we present to the best of our knowledge the first investigation of a combined bit-width optimization of input data and internal data for an 8-state ...
Heiko Michel, Norbert Wehn
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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, Ali Özgür Yilmaz
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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, Ali Özgür Yilmaz
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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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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 ...
openaire +1 more source