Results 31 to 40 of about 19,347 (198)

Understanding turbo codes: A signal processing study

open access: yesJournal of Information and Intelligence
In this paper, we study turbo codes from the digital signal processing point of view by defining turbo codes over the complex field. It is known that iterative decoding and interleaving between concatenated parallel codes are two key elements that make ...
Xiang-Gen Xia
doaj   +1 more source

Systematic redundant residue number system codes: analytical upper bound and iterative decoding performance over AWGN and Rayleigh channels

open access: yes, 2006
The novel family of redundant residue number system (RRNS) codes is studied. RRNS codes constitute maximum–minimum distance block codes, exhibiting identical distance properties to Reed–Solomon codes.
Hanzo, L., Liew, T.H., Yang, L-L.
core   +1 more source

UNIFIED DECODER ARCHITECTURE FOR LDPC/TURBO CODES [PDF]

open access: yes, 2008
Low-density parity-check (LDPC) codes on par with convolutional turbo codes (CTC) are two of the most powerful error correction codes known to perform very close to the Shannon limit.
Cavallaro, Joseph R., Sun, Yang
core   +3 more sources

Turbo Equalization Of Nonlinear ISI-channels Using High Rate FEC Codes [PDF]

open access: yesAdvances in Radio Science, 2005
Turbo equalization is a widely known method to cope with low signal to noise ratio (SNR) channels corrupted by linear intersymbol interference (ISI) (Berrou and Galvieux, 1993; Hagenauer et al., 1997).
M. Siegrist   +4 more
doaj  

Iterative channel equalization, channel decoding and source decoding

open access: yes, 2005
The performance of soft source decoding is evaluated over dispersive AWGN channels. By employing source codes having error-correcting capabilities, such as Reversible Variable-Length Codes (RVLCs) and Variable-Length Error-Correcting (VLEC) codes, the ...
Hanzo, L., Wang, J., Yang, L-L.
core   +1 more source

Frequency-Domain Turbo Equalisation in Coded SC-FDMA Systems: EXIT Chart Analysis and Performance [PDF]

open access: yes, 2012
In this paper, we investigate the achievable performance of channel coded single-carrier frequency division multiple-access (SC-FDMA) systems employing various detection schemes, when communicating over frequency-selective fading channels.
Hanzo, Lajos   +2 more
core   +1 more source

Information-Coupled Turbo Codes for LTE Systems

open access: yes, 2017
We propose a new class of information-coupled (IC) Turbo codes to improve the transport block (TB) error rate performance for long-term evolution (LTE) systems, while keeping the hybrid automatic repeat request protocol and the Turbo decoder for each ...
Cheng, Xingqing   +5 more
core   +1 more source

An Iterative Joint Linear-Programming Decoding of LDPC Codes and Finite-State Channels [PDF]

open access: yes, 2011
In this paper, we introduce an efficient iterative solver for the joint linear-programming (LP) decoding of low-density parity-check (LDPC) codes and finite-state channels (FSCs). In particular, we extend the approach of iterative approximate LP decoding,
Kim, Byung-Hak, Pfister, Henry D.
core   +1 more source

Sensitivity analysis of the channel estimation deviation to the MAP decoding algorithm

open access: yesTongxin xuebao, 2006
As a necessary input parameter for MAP decoding algorithm,SNR was normally obtained from the channel estimation unit.Corresponding research indicated that SNR estimation deviation degraded significantly the performance of Turbo decoding.MAP decoding ...
WAN Ke, FAN Ping-zhi
doaj   +2 more sources

Analysis of the Convergence Process by EXIT Charts for Parallel Implementations of Turbo Decoders [PDF]

open access: yes, 2013
International audienceIterative process is a general principle in decoding powerful FEC codes such as turbo codes. However, the mutual information exchange during the iterative process is not easy to analyze and to describe.
Jego, Christophe   +2 more
core   +3 more sources

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