26 citations · 29 across the 11 of their papers we have counts for
13 papers
Design and Analysis of a Concatenated Code for Intersymbol Interference Wiretap Channels
Aria Nouri, Reza Asvadi, Jun Chen
We propose a two-stage concatenated coding scheme for reliable and secure communication over intersymbol interference wiretap channels. We first establish the secrecy capacity. The…
Constrained Secrecy Capacity of Finite-Input Intersymbol Interference Wiretap Channels
Aria Nouri, Reza Asvadi, Jun Chen +1
We consider reliable and secure communication over intersymbol interference wiretap channels (ISI-WTCs). In particular, we first derive an achievable secure rate for ISI-WTCs witho…
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…
LDPC Codes over Gaussian Multiple Access Wiretap Channel
Sahar Shahbaz, Bahareh Akhbari, Reza Asvadi
We study the problem of two-user Gaussian multiple access channel (GMAC) in the presence of an external eavesdropper. In this problem, an eavesdropper receives a signal with a lowe…
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…
Design of Capacity Approaching Ensembles of LDPC Codes for Correlated Sources using EXIT Charts
Mohamad Khas Mohamadi, Hamid Saeedi, Reza Asvadi
This paper is concerned with the design of capacity approaching ensembles of Low-Densiy Parity-Check (LDPC) codes for correlated sources. We consider correlated binary sources wher…
Joint Distributed Source-Channel Decoding for LDPC-Coded Binary Markov Sources
Reza Asvadi, Tad Matsumoto, Markku Juntti
We propose a novel joint decoding technique for distributed source-channel (DSC) coded systems for transmission of correlated binary Markov sources over additive white Gaussian noi…
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…