239 citations · 418 across the 38 of their papers we have counts for
27 papers · 1 filter
Boosting Learning for LDPC Codes to Improve the Error-Floor Performance
Hee-Youl Kwak, Dae-Young Yun, Yongjune Kim +2
Low-density parity-check (LDPC) codes have been successfully commercialized in communication systems due to their strong error correction capabilities and simple decoding process.…
Iterative Soft Decoding Algorithm for DNA Storage Using Quality Score and Redecoding
Jaeho Jeong, Hosung Park, Hee-Youl Kwak +4
Ever since deoxyribonucleic acid (DNA) was considered as a next-generation data-storage medium, lots of research efforts have been made to correct errors occurred during the synthe…
Construction of Protograph-Based Partially Doped Generalized LDPC Codes
Jaewha Kim, Jae-Won Kim, Hee-Youl Kwak +1
A generalized low-density parity-check (GLDPC) code is a class of codes, where single parity check nodes in a conventional low-density parity-check (LDPC) code are replaced by line…
Weakly Private Information Retrieval Under Rényi Divergence
Jun-Woo Tak, Sang-Hyo Kim, Yongjune Kim +1
Private information retrieval (PIR) is a protocol that guarantees the privacy of a user who is in communication with databases. The user wants to download one of the messages store…
Iterative DNA Coding Scheme With GC Balance and Run-Length Constraints Using a Greedy Algorithm
Seong-Joon Park, Yongwoo Lee, Jong-Seon No
In this paper, we propose a novel iterative encoding algorithm for DNA storage to satisfy both the GC balance and run-length constraints using a greedy algorithm. DNA strands with…
Linear Index Coding With Multiple Senders and Extension to a Cellular Network
Jae-Won Kim, Jong-Seon No
In this paper, linear index codes with multiple senders are studied, where every receiver receives encoded messages from all senders. A new fitting matrix for the multiple senders…
Interference Alignment Schemes Using Latin Square for Kx3 MIMO X Channel
Young-Sik Moon, Jong-Yoon Yoon, Jong-Seon No +1
In this paper, we study an interference alignment (IA) scheme with finite time extension and beamformer selection method with low computational complexity for X channel. An IA sche…
Design of Irregular SC-LDPC Codes With Non-Uniform Degree Distributions by Linear Programing
Heeyoul Kwak, Jong-Seon No, Hosung Park
In this paper, we propose a new design method of irregular spatially-coupled low-density parity-check (SC-LDPC) codes with non-uniform degree distributions by linear programming (L…
Equivalences Between Network Codes With Link Errors and Index Codes With Side Information Errors
Jae-Won Kim, Jong-Seon No
In this paper, new equivalence relationships between a network code with link errors (NCLE) and an index code with side information errors (ICSIE) are studied. First, for a given n…
New Two-Stage Automorphism Group Decoders for Cyclic Codes in the Erasure Channel
Chanki Kim, Jong-Seon No
Recently, error correcting codes in the erasure channel have drawn great attention for various applications such as distributed storage systems and wireless sensor networks, but ma…
Index coding with erroneous side information
Jae-Won Kim, Jong-Seon No
In this paper, new index coding problems are studied, where each receiver has erroneous side information. Although side information is a crucial part of index coding, the existence…
Relay-Aided MIMO Cellular Networks Using Opposite Directional Interference Alignment
Hoyoun Kim, Jong-Seon No
In this paper, we first propose interference alignment (IA) scheme for uplink transmission of multiple-input-mulitple-output (MIMO) cellular network with a help of relay which oper…
Degrees of Freedom of SISO X Channel with Synergistic Alternating CSIT
Young-Sik Moon, Jae-Hong Kim, Gyeonggi-do +2
In this paper, degrees of freedom (DoF) is investigated for the single input single output (SISO) X channel with alternating channel state information at the transmitte…
New Coupled Codes Constructed by Overlapping Circular SC-LDPC Codes
Heeyoul Kwak, Bohwan Jun, Pilwoong Yang +2
In this paper, we propose new coupled codes constructed by overlapping circular spatially-coupled low-density parity-check (SC-LDPC) codes, which show better asymptotic and finite-…
On the Properties of Cubic Metric for OFDM Signals
Kee-Hoon Kim, Jong-Seon No, Dong-Joon Shin
As a metric for amplitude fluctuation of orthogonal frequency division multiplexing (OFDM) signal, cubic metric (CM) has received an increasing attention because it is more closely…
OS effect in SLM schemes with correlation
Jun Young Woo, Kee Hoon Kim, Jong Seon No +1
BER is analyzed SLM schemes with correlation metric.
New Families of -ary Sequences of Period With Low Maximum Correlation Magnitude
Wijik Lee, Ji-Youp Kim, Jong-Seon No
Let be an odd prime such that and be an odd integer. In this paper, two new families of -ary sequences of period are con…
The PAPR Problem in OFDM Transmission: New Directions for a Long-Lasting Problem
Gerhard Wunder, Robert F. H. Fischer, Holger Boche +2
Peak power control for multicarrier communications has been a long-lasting problem in signal processing and communications. However, industry and academia are confronted with new c…
Construction of High-Rate Regular Quasi-Cyclic LDPC Codes Based on Cyclic Difference Families
Hosung Park, Seokbeom Hong, Jong-Seon No +1
For a high-rate case, it is difficult to randomly construct good low-density parity-check (LDPC) codes of short and moderate lengths because their Tanner graphs are prone to making…
Deterministic Selection of Phase Sequences in Low Complexity SLM Scheme
Jun-Young Woo, Hyun-Seung Joo, Kee-Hoon Kim +2
Selected mapping (SLM) is a suitable scheme, which can solve the peak-to-average power ratio (PAPR) problem. Recently, many researchers have concentrated on reducing the computatio…
Design of Multiple-Edge Protographs for QC LDPC Codes Avoiding Short Inevitable Cycles
Hosung Park, Seokbeom Hong, Jong-Seon No +1
There have been lots of efforts on the construction of quasi-cyclic (QC) low-density parity-check (LDPC) codes with large girth. However, most of them are focused on protographs wi…
Low-Complexity Demodulation for Interleaved OFDMA Downlink System Using Circular Convolution
Hyun-Seung Joo, Kee-Hoon Kim, Jong-Seon No +1
In this paper, a new low-complexity demodulation scheme is proposed for interleaved orthogonal frequency division multiple access (OFDMA) downlink system with N subcarriers and M u…
Adaptive Generation Method of OFDM Signals in SLM Schemes for Low-complexity
Kee-Hoon Kim, Hyun-Seung Joo, Jong-Seon No +1
There are many selected mapping (SLM) schemes to reduce the peak-to-average power ratio (PAPR) of orthogonal frequency division multiplexing (OFDM) signals. Beginning with the conv…
On the Cross-Correlation of a -ary m-Sequence and its Decimated Sequences by
Sung-Tai Choi, Ji-Youp Kim, Jong-Seon No
In this paper, for an odd prime such that , odd , and with , the value distribution of the exponential sum is c…