16 papers · ranked by Valyu relevance
Kuranage Roche Rayan Ranasinghe, Giuseppe Thadeu Freitas de Abreu, David González G., Carlo Fischione
Kuranage Roche Rayan Ranasinghe, ∗ Giuseppe Thadeu Freitas de Abreu, ∗ David Gonzalez G. ´ † and Carlo Fischione‡ ∗ School of Computer Science and Engineering, Constructor University, Bremen, Germany †Wireless Communications Technologies Group, AUMOVIO SE, Frankfurt am Main, Germany ‡School of Electrical Engineering…
Rithea Ngeth, Brian M. Kurkoski, Yuto Lim, Yasuo Tan
This paper investigates the design of overlapped chunked codes (OCC) for multi-source multi-relay networks where a physical-layer network coding approach, compute-and-forward (CF) based on nested lattice codes (NLC), is applied for the simultaneous transmissions from the sources to the relays. This code is called…
Yihua Tan, Xiaojun Yuan
Compute-and-forward (CF) harnesses interference in a wireless network by allowing relays to compute combinations of source messages. The computed message combinations at relays are correlated, and so directly forwarding these combinations to a destination generally incurs information redundancy and spectrum…
Iris Kaplan, Or Ordentlich
—Recent work have shown that the quantization for matrix multiplication problem can be optimally solved by quantizing each column in each matrix using a nested lattice code, and then multiplying the de-quantized matrices. It was further demonstrated that when product codes of sub-dimension d and rate R are used, the…
Hassan Khodaiemehr, Dariush Kiani, Mohammad‐Reza Sadeghi
Low density parity check (LDPC) lattices are obtained from Construction D' and a family of nested binary LDPC codes. We consider an special case of these lattices with one binary LDPC code as underlying code. This special case of LDPC lattices can be obtained by lifting binary LDPC codes using Construction A lattices.…
Fan Zhou, Brian M. Kurkoski
—Designs and methods for nested lattice codes using Construction D' lattices for coding and convolutional code lattices for shaping are described. Two encoding methods and a decoding algorithm for Construction D' coding lattices that can be used with shaping lattices for power-constrained channels are given. We…
Christian Chapman, Daniel W. Bliss
Lattices provide useful structure for distributed coding of correlated sources. A common lattice encoder construction is to first round an observed sequence to a ‘fine’ lattice with dither, then produce the result’s modulo to a ‘coarse’ lattice as the encoding. However, such encodings may be jointly-dependent. A class…
Ahmed Hindy, Aria Nosratinia
For ergodic fading, a lattice coding and decoding strategy is proposed and its performance is analyzed for the single-input single-output (SISO) and multiple-input multiple-output (MIMO) point-to-point channel as well as the multiple-access channel (MAC), with channel state information available only at the receiver…
Brian M. Kurkoski
Encoding and indexing of lattice codes is generalized from self-similar lattice codes to a broader class of lattices. If coding lattice Λ c and shaping lattice Λ s satisfy Λ s Ď Λ c, then Λ c { Λ s is a quotient group that can be used to form a (nested) lattice code C. Conway and Sloane's method of encoding and…
Chengpin Luo, Brian M. Kurkoski
—A coding lattice Λc and a shaping lattice Λs forms a nested lattice code C if Λs ⊆ Λc. Under some conditions, C is a finite cyclic group formed by rectangular encoding. This paper presents the conditions for the existence of such C and provides some designs. These designs correspond to solutions to linear Diophantine…
María Constanza Estela, Claudio Valencia-Cordero, Luca Barletta
In this study, we work with lattice Gaussian coding for a K-user Gaussian interference channel. Following the procedure of Etkin et al., in which the capacity is found to be within 1 bit/s/Hz of the capacity of a two-user Gaussian interference channel for each type of interference using random codes, we work with…
Vadim A. Nenashev, Aleksandr R. Bestugin, Alexey V. Rabin, Sergei V. Solenyi + 2 more
'Sergei V. Solenyi' 'Sergey A. Nenashev' 'Hsiao-Chun Wu'] Currently, various applications of ultra-wideband signal-code constructions are among the most vibrant technologies, being implemented in very different fields. The purpose of this research consists of analyzing Barker codes and searching for the optimal nested…
Morteza Shoushtari, Willie Harrison, Predrag Ivanis, Goran Djordjević
'Goran Djordjević'] Nested linear coding is a widely used technique in wireless communication systems for improving both security and reliability. Some parameters, such as the relative generalized Hamming weight and the relative dimension/length profile, can be used to characterize the performance of nested linear…
Rachna Srivastava, Vincent C. Gaudet, Patrick Mitran
This paper describes a field-programmable gate array (FPGA) implementation of a fixed-point low-density lattice code (LDLC) decoder where the Gaussian mixture messages that are exchanged during the iterative decoding process are approximated to a single Gaussian. A detailed quantization study is first performed to find…
Xin Song, Shalin Shah, John Reif
With impressive density and coding capacity, DNA offers a promising solution for building long-lasting data archival storage systems. In recent implementations, data retrieval such as random access typically relies on a large library of non-interacting PCR primers. While several algorithms automate the primer design…
Chuan Jiang, Biao Lu, Wei Zhang, Yoel P. Ohayon + 4 more
DNA overwinding and underwinding between adjacent Holliday junctions have been applied in DNA origami constructs to design both left-handed and right-handed nanostructures. For a variety of DNA tubes assembled from small tiles, only a theoretical approach of the intrinsic tile curvature was previously used to explain…