no code implementations • 3 Jul 2022 • Yun Liao, Seyyed Ali Hashemi, Hengjie Yang, John M. Cioffi
In addition, when an IMP model trained on a length-128 polar code directly applies to the construction of polar codes with different code rates and blocklengths, simulations show that these polar code constructions deliver comparable performance to the 5G polar codes.
no code implementations • 24 Dec 2020 • Seyyed Ali Hashemi, Marco Mondelli, Arman Fazeli, Alexander Vardy, John Cioffi, Andrea Goldsmith
In particular, when the number of processing elements $P$ that can perform SSC decoding operations in parallel is limited, as is the case in practice, the latency of SSC decoding is $O\left(N^{1-1/\mu}+\frac{N}{P}\log_2\log_2\frac{N}{P}\right)$, where $N$ is the block length of the code and $\mu$ is the scaling exponent of the channel.
Information Theory Information Theory
no code implementations • 19 Sep 2020 • Yun Liao, Seyyed Ali Hashemi, John Cioffi, Andrea Goldsmith
This paper formulates the polar-code construction problem for the successive-cancellation list (SCL) decoder as a maze-traversing game, which can be solved by reinforcement learning techniques.
no code implementations • 15 Sep 2020 • Nghia Doan, Seyyed Ali Hashemi, Warren Gross
In this paper we address the problem of selecting factor-graph permutations of polar codes under belief propagation (BP) decoding to significantly improve the error-correction performance of the code.