26 citations · 43 across the 16 of their papers we have counts for
16 papers
A tiny public key scheme based on Niederreiter Cryptosystem
Arash Khalvan, Amirhossein Zali, Mahmoud Ahmadian Attari
Due to the weakness of public key cryptosystems encounter of quantum computers, the need to provide a solution was emerged. The McEliece cryptosystem and its security equivalent, t…
Successive Wyner-Ziv Coding for the Binary CEO Problem under Logarithmic Loss
Mahdi Nangir, Reza Asvadi, Jun Chen +2
The -link binary Chief Executive Officer (CEO) problem under logarithmic loss is investigated in this paper. A quantization splitting technique is applied to convert the problem…
Successive Wyner-Ziv Coding for the Binary CEO Problem under Log-Loss
Mahdi Nangir, Reza Asvadi, Mahmoud Ahmadian-Attari +1
An -link binary CEO problem is considered in this paper. We present a practical encoding and decoding scheme for this problem employing the graph-based codes. A successive codin…
Binary CEO Problem under Log-Loss with BSC Test-Channel Model
Mahdi Nangir, Reza Asvadi, Mahmoud Ahmadian-Attari +1
In this paper, we propose an efficient coding scheme for the two-link binary Chief Executive Officer (CEO) problem under logarithmic loss criterion. The exact rate-distortion bound…
Analysis and Code Design for the Binary CEO Problem under Logarithmic Loss
Mahdi Nangir, Reza Asvadi, Mahmoud Ahmadian-Attari +1
In this paper, we propose an efficient coding scheme for the binary Chief Executive Officer (CEO) problem under logarithmic loss criterion. Courtade and Weissman obtained the exact…
A Binary Wyner-Ziv Code Design Based on Compound LDGM-LDPC Structures
Mahdi Nangir, Mahmoud Ahmadian-Attari, Reza Asvadi
In this paper, a practical coding scheme is designed for the binary Wyner-Ziv (WZ) problem by using nested low-density generator-matrix (LDGM) and low-density parity-check (LDPC) c…
Novel LDPC Decoder via MLP Neural Networks
Alireza Karami, Mahmoud Ahmadian Attari
In this paper, a new method for decoding Low Density Parity Check (LDPC) codes, based on Multi-Layer Perceptron (MLP) neural networks is proposed. Due to the fact that in neural ne…
Compound Multiple Access Channel with Confidential Messages
Hassan Zivari-Fard, Bahareh Akhbari, Mahmoud Ahmadian-Attari +1
In this paper, we study the problem of secret communication over a Compound Multiple Access Channel (MAC). In this channel, we assume that one of the transmitted messages is confid…
Multiple Access Channel with Common Message and Secrecy constraint
Hassan Zivari-Fard, Bahareh Akhbari, Mahmoud Ahmadian-Attari +1
In this paper, we study the problem of secret communication over a multiple-access channel with a common message. Here, we assume that two transmitters have confidential messages,…
Optimal Rate Irregular LDPC Codes in Binary Erasure Channel
H. Tavakoli, M. Ahmadian, M. Reza Peyghami
In this paper, we design the optimal rate capacity approaching irregular Low-Density Parity-Check code ensemble over Binary Erasure Channel, by using practical Semi-Definite Progra…
Parity Check Matrix Recognition from Noisy Codewords
Yasser Karimian, Saeideh Ziapour, Mahmoud Ahmadian Attari
We study recovering parity check relations for an unknown code from intercepted bitstream received from Binary Symmetric Channel in this paper. An iterative column elimination algo…
Achievable Rates for a Two-Relay Network with Relays-Transmitter Feedbacks
Mohammad Ali Tebbi, Mahtab Mirmohseni, Mahmoud Ahmadian Attari +1
We consider a relay network with two relays and two feedback links from the relays to the sender. To obtain the achievability results, we use the compress-and-forward and the decod…
An Achievable Rate Region for a Two-Relay Network with Receiver-Transmitter Feedback
Mohammad Ali Tebbi, Mahtab Mirmohseni, Mahmoud Ahmadian Attari +1
We consider a relay network with two relays and a feedback link from the receiver to the sender. To obtain the achievability result, we use compress-and-forward and random binning…
LLR Approximation for Wireless Channels Based on Taylor Series and Its Application to BICM with LDPC Codes
Reza Asvadi, Amir H. Banihashemi, Mahmoud Ahmadian-Attari +1
A new approach for the approximation of the channel log-likelihood ratio (LLR) for wireless channels based on Taylor series is proposed. The approximation is applied to the uncorre…
Design of Finite-Length Irregular Protograph Codes with Low Error Floors over the Binary-Input AWGN Channel Using Cyclic Liftings
Reza Asvadi, Amir H. Banihashemi, Mahmoud Ahmadian-Attari
We propose a technique to design finite-length irregular low-density parity-check (LDPC) codes over the binary-input additive white Gaussian noise (AWGN) channel with good performa…
Lowering the Error Floor of LDPC Codes Using Cyclic Liftings
Reza Asvadi, Amir H. Banihashemi, Mahmoud Ahmadian-Attari
Cyclic liftings are proposed to lower the error floor of low-density parity-check (LDPC) codes. The liftings are designed to eliminate dominant trapping sets of the base code by re…