Results 61 to 70 of about 865 (182)
Advances in Electrical and Computer Engineering, 2011 This paper analyzes the extrinsic information scaling coefficient influence on double-iterative decoding algorithm for space-time turbo codes with large number of antennas. The max-log-APP algorithm is used, scaling both the extrinsic information in the
TRIFINA, L. +2 more
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Improved Max-Log-MAP Turbo Decoding by Maximization of Mutual Information Transfer
EURASIP Journal on Advances in Signal Processing, 2005 The demand for low-cost and low-power decoder chips has resulted in renewed interest in low-complexity decoding algorithms. In this paper, a novel theoretical framework for improving the performance of turbo decoding schemes that use the max-log-MAP ...
Karimi Hamid Reza +2 more
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EURASIP Journal on Advances in Signal Processing, 2005 Turbo-receivers reduce the effect of the interference-limited propagation channels through the iterative exchange of information between the front-end receiver and the channel decoder.
Leszek Szczeciński +1 more
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A MODIFIED UNEQUAL POWER ALLOCATION (UPA) SCHEME FOR PERFORMANCE ENHANCEMENT IN BIT REPETITION TURBO CODES IN HIGH SPEED DOWNLINK PACKET ACCESS (HSDPA) SYSTEM [PDF]
Journal of Engineering Science and Technology, 2015 In this paper, a modified optimal power allocation scheme for different bits in turbo encoder has been proposed to improve the performance of Turbo Codes system in High Speed Downlink Packet Access (HSDPA) service. In a typical turbo code in HSDPA system,
B. BALAMURALITHARA
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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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EURASIP Journal on Advances in Signal Processing, 2006 In this contribution we propose an analogue receiver that can perform turbo detection in MIMO systems. We present the case for a receiver that is built from nonlinear analogue devices, which perform detection in a "free-flow" network (no notion of ...
McNamara Darren +3 more
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Tongxin xuebao, 2006 A new simple iterative channel estimation algorithm for quasi-coherent demodulation Turbo coded GMSK signals was presented. Based on the iterative decoding principle of Turbo code, the algorithm improved the channel esti- mation accuracy using output of ...
WU Tuan-feng, YANG Xi-gen
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VLSI Architectures for Sliding-Window-Based Space-Time Turbo Trellis Code Decoders
Journal of Electrical and Computer Engineering, 2012 The VLSI implementation of SISO-MAP decoders used for traditional iterative turbo coding has been investigated in the literature. In this paper, a complete architectural model of a space-time turbo code receiver that includes elementary decoders is ...
Georgios Passas, Steven Freear
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Performance of JPEG Image Transmission Using Proposed Asymmetric Turbo Code
EURASIP Journal on Advances in Signal Processing, 2007 This paper gives the results of a simulation study on the performance of JPEG image transmission over AWGN and Rayleigh fading channels using typical and proposed asymmetric turbo codes for error control coding.
Mohamad Yusoff Alias +2 more
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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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