Results 21 to 30 of about 184,562 (108)
Optimizing Serially Concatenated Neural Codes with Classical Decoders [PDF]
arXiv, 2022 For improving short-length codes, we demonstrate that classic decoders can also be used with real-valued, neural encoders, i.e., deep-learning based codeword sequence generators. Here, the classical decoder can be a valuable tool to gain insights into these neural codes and shed light on weaknesses.
arxiv
Journal of Engineering and Sustainable Development, 2007 Serial concatenated convolutional coding with iterative decoding is examined for data transmission employing BFSK (binary frequency shift keying) modulation and non-coherent detection receiver.
Maha George Zia
doaj
Capacity-achieving CPM schemes [PDF]
, 2008 The pragmatic approach to coded continuous-phase modulation (CPM) is proposed as a capacity-achieving low-complexity alternative to the serially-concatenated CPM (SC-CPM) coding scheme. In this paper, we first perform a selection of the best spectrally-efficient CPM modulations to be embedded into SC-CPM schemes.
arxiv +1 more source
Some Extended Results on the Design of Punctured Serially Concatenated Convolutional Codes
Journal of Communications Software and Systems, 2006 The aim of this paper is twofold. On one hand, it presents the results of the search for good punctured systematicrecursive convolutional encoders suitable for application in serially concatenated convolutional codes (SCCCs) operating in two different ...
Massimiliano Laddomada +1 more
doaj
Analysis and Comparison of Some Recent Classes of Turbo Like Codes for the Upcoming DVB Standards
Journal of Communications Software and Systems, 2008 In this paper, a number of powerful recent classes of turbo like codes are analyzed as possible candidates for theupcoming DVB Standards. The final selection is justified in terms of the best tradeoff between complexity and performance.
Alexandre Graell +2 more
doaj
A Unified Ensemble of Concatenated Convolutional Codes [PDF]
arXiv, 2017 We introduce a unified ensemble for turbo-like codes (TCs) that contains the four main classes of TCs: parallel concatenated codes, serially concatenated codes, hybrid concatenated codes, and braided convolutional codes. We show that for each of the original classes of TCs, it is possible to find an equivalent ensemble by proper selection of the design
arxiv
High-Rate Convolutional Codes with CRC-Aided List Decoding for Short Blocklengths [PDF]
arXiv, 2021 Recently, rate-$1/\omega$ zero-terminated and tail-biting convolutional codes (ZTCCs and TBCCs) with cyclic-redundancy-check (CRC)-aided list decoding have been shown to closely approach the random-coding union (RCU) bound for short blocklengths. This paper designs CRCs for rate-$(\omega-1)/\omega$ CCs with short blocklengths, considering both the ZT ...
arxiv
Braided Convolutional Codes -- A Class of Spatially Coupled Turbo-Like Codes [PDF]
arXiv, 2014 In this paper, we investigate the impact of spatial coupling on the thresholds of turbo-like codes. Parallel concatenated and serially concatenated convolutional codes as well as braided convolutional codes (BCCs) are compared by means of an exact density evolution (DE) analysis for the binary erasure channel (BEC).
arxiv
Turbo Codes Based on Time-Variant Memory-1 Convolutional Codes over Fq [PDF]
, 2011 Two classes of turbo codes over high-order finite fields are introduced. The codes are derived from a particular protograph sub-ensemble of the (dv=2,dc=3) low-density parity-check code ensemble. A first construction is derived as a parallel concatenation of two non-binary, time-variant accumulators.
arxiv +1 more source
Performance of Hybrid Concatenated Trellis Codes CPFSK with Iterative Decoding over Fading Channels [PDF]
arXiv, 2011 Concatenation is a method of building long codes out of shorter ones, it attempts to meet the problem of decoding complexity by breaking the required computation into manageable segments. Concatenated Continuous Phase Frequency Shift Keying (CPFSK) facilitates powerful error correction.
arxiv