Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Kasra Vakilinia"'
Publikováno v:
IEEE Transactions on Communications. 64:2245-2257
This paper presents a general approach for optimizing the number of symbols in increments (packets of incremental redundancy) in a feedback communication system with a limited number of increments. This approach is based on a tight normal approximati
Publikováno v:
IEEE Transactions on Communications. 63:1522-1532
This paper proposes a class of rate-compatible LDPC codes, called protograph-based Raptor-like (PBRL) codes. The construction is focused on binary codes for BI-AWGN channels. As with the Raptor codes, additional parity bits are produced by exclusive-
Publikováno v:
ITA
This paper applies the sequential differential optimization (SDO) algorithm to optimize the transmission lengths of incremental redundancy for a 1024-state tail-biting convolutional code. The tail-biting reliability-output Viterbi algorithm is used t
Autor:
Tsung-Yi Chen, Guiqiang Dong, Hari Shankar, Jiadong Wang, Kasra Vakilinia, Richard D. Wesel, Tong Zhang, Thomas A. Courtade
Publikováno v:
IEEE Journal on Selected Areas in Communications. 32:880-891
Multiple reads of the same Flash memory cell with distinct word-line voltages provide enhanced precision for LDPC decoding. In this paper, the word-line voltages are optimized by maximizing the mutual information (MI) of the quantized channel. The en
Publikováno v:
ISTC
Rate-compatible (RC) codes are at the core of systems with incremental redundancy. Usually, an RC code family supports successively lower code rates by sending specific increments of additional redundancy at each rate. That is, the order of the incre
Autor:
Lara Dolecek, Dariush Divsalar, Kasra Vakilinia, Sudarsan V. S. Ranganathan, Richard D. Wesel
Publikováno v:
ITA
Spatially coupled low-density parity-check block codes (SC-LDPC-BCs) are a class of LDPC codes in which certain ensembles achieve capacity under iterative belief propagation decoding. Prior work has considered these codes mostly from a protograph per
Publikováno v:
ISIT
This paper uses an extension of Reciprocal Channel Approximation (RCA) to accurately and efficiently predict the frame error rate (FER) performance of polar codes by analyzing the probability density function (p.d.f) of log likelihood ratios (LLR) as
Publikováno v:
ITA
This paper designs protograph-based Raptor-like (PBRL) codes as a class of rate-compatible (RC) LDPC codes for binary-erasure channels (BEC). Similar to the Raptor Codes, the RC property is achieved by X-OR operations of the precoded bits. The additi
Autor:
Dariush Divsalar, Richard D. Wesel, Adam R. Williamson, Sudarsan V. S. Ranganathan, Kasra Vakilinia
Publikováno v:
ITW
One advantage of incremental transmissions with feedback in point-to-point memoryless channels is a reduction in average blocklength required to approach capacity. This paper optimizes the size of each incremental transmission for non-binary (NB) LDP
Publikováno v:
ISIT
Following Poulliat et al.’s design of (2, dc) nonbinary LDPC (NB-LDPC) codes, this paper designs high-rate irregular NB-LDPC codes by addressing the problem of minimum symbol distance. The design procedure first identifies all stopping sets up to w