Results 81 to 90 of about 131,778 (213)

On Viterbi decoding for time-varying convolutional codes

, 1978
The Viterbi decoding technique has been extended for time-varying convolutional codes. The problem has been presented as a discrete-times, time-varying regulator control problem, and dynamic programming has been utilized to explain the decoding ...
Bedi, J. S., Kamal, A. K.
core   +1 more source

Minimum decoding trellis length and truncation depth of wrap-around Viterbi algorithm for TBCC in mobile WiMAX

EURASIP Journal on Wireless Communications and Networking, 2011
The performance of the wrap-around Viterbi decoding algorithm with finite truncation depth and fixed decoding trellis length is investigated for tail-biting convolutional codes in the mobile WiMAX standard. Upper bounds on the error probabilities induced
Liu Yu-Sun, Tsai Yao-Yu
doaj  

A Novel High-Speed Configurable Viterbi Decoder for Broadband Access

EURASIP Journal on Advances in Signal Processing, 2003
A novel design and implementation of an online reconfigurable Viterbi decoder is proposed, based on an area-efficient add-compare-select (ACS) architecture, in which the constraint length and traceback depth can be dynamically reconfigured.
Benaissa Mohammed, Zhu Yiqun
doaj   +1 more source

A New Viterbi Algorithm with Adaptive Path Reduction Method [PDF]

, 1993
A new Viterbi algorithm with adaptive path reduction method is presented. The proposed system consists of the pre-decoder and reduced path Viterbi decoder. The predecoder separates the mixed channel noise from the received sequence [6]-[9]. The number of
Yamazato, Takaya, Mori, Shinsaku, Sasase, Iwao   +2 more
core  

Artificial Neural Network Viterbi Decoding System And Method

, 1994
An artificial neural network (ANN) decoding system decodes a convolutionally-encoded data stream at high speed and with high efficiency. The ANN decoding system implements the Viterbi algorithm and is significantly faster than comparable digital-only ...

core   +1 more source

Viterbi Decoding with Dual Timescale Traceback Processing

, 2007
In this paper a new approach to traceback processing in Viterbi decoders is presented. The approach reduces memory requirements as compared to previous approaches by using different speeds during acquisition of the best trellis path and the subsequent ...
Heinrich Meyr, Olaf J. Joeressen
core  

Comparative Study of Turbo Equalization Schemes using Convolutional, Convolutional Turbo, and Block-Turbo Codes

, 2002
Turbo equalizers have been shown to be successful in mitigating the effects of inter-symbol interference introduced by partial response modems and by dispersive channels for code rates of $R \le 1/2$.
Hamorsky, J., Yeap, B.L., Liew, T.H., Hanzo, L.   +3 more
core   +1 more source

FPGA Implementation of Convolutional Code Encoding and Viterbi Decoding Algorithm [PDF]

, 2005
探讨了卷积码编码及其Viterbi译码算法的FPGA(Field-ProgrammableGateArray)实现,根据编码器的结构,分别采用了有限状态机转换的编码法和基于流水线结构的状态转换译码法,有效地提高了编译码的速度。最后给出了(2,1,2)卷积码的编码及其Viterbi译码算法的实验仿真结果。FPGA Implementation of Convolutional Code encoding and Viterbi Decoding Algorithm is presented ...
温学东
core  

SOVA-Decoded Serially Concatenated Continuous Phase Modulation System With Markov and Hidden Markov Sources

IEEE Access
We design low-complexity bi-directional (forward and backward) modified Soft-Output Viterbi Algorithm (SOVA) decoders to exploit source memory from binary Markov and hidden Markov model (HMM) sources, respectively, for decoding in serially concatenated ...
Zhijie Guo, Lei Cao
doaj   +1 more source

Enhanced decoding for the Galileo low-gain antenna mission: Viterbi redecoding with four decoding stages [PDF]

, 1995
The Galileo low-gain antenna mission will be supported by a coding system that uses a (14,1/4) inner convolutional code concatenated with Reed-Solomon codes of four different redundancies.
Belongie, M., Dolinar, S.
core