A hierarchical classification of signals and corresponding approximation method based on minimum norm criterion. - Tomohiko Uyematsu; Kohichi Sakaniwa (ICASSP, 1986)

A Construction Method for m-ary Unidirectional Error Control Codes. - Tae Nam Ahn; Kohichi Sakaniwa; T. R. N. Rao (AAECC, 1990)

A Note on t-Unidirectional Error Correcting and d(d>=t)-Unidirectional Error Detecting (t-UEC and d-UED) Codes. - Kohichi Sakaniwa; Tae Nam Ahn; T. R. N. Rao (IEEE Trans. Computers, 1991)

An optimal design for a homomorphic deconvolution system. - Isao Yamada; Kohichi Sakaniwa (IEEE Trans. Signal Process., 1992)

New Results on Stability Theory of Time-Varying Linear Systems. - Jinhui Chao; Teruyuki Sato; Kohichi Sakaniwa; Shigeo Tsujii (ISCAS, 1994)

A multidimensional isomorphic operator and its properties-a proposal of finite-extent multidimensional cepstrum. - Isao Yamada; Kohichi Sakaniwa; Shigeo Tsujii (IEEE Trans. Signal Process., 1994)

Constrained parallel projection methods for optimal signal estimation and design-constrained inconsistent signal feasibility problems. - Isao Yamada; Nobuhiko Ogura; Akito Goto; Kohichi Sakaniwa (ICIP (3), 1996)

On Generalized Hamming Weights of Codes Constructed on Affine Algebraic Sets. - Tomoharu Shibuya; Jiro Mizutani; Kohichi Sakaniwa (AAECC, 1997)

Algebraic multidimensional phase unwrapping and zero distribution of complex polynomials-characterization of multivariate stable polynomials. - Isao Yamada; Kaoru Kurosawa; Hiroshi Hasegawa; Kohichi Sakaniwa (IEEE Trans. Signal Process., 1998)

An optimal set-theoretic blind deconvolution scheme based on hybrid steepest descent method. - Isao Yamada; Masanori Kato; Kohichi Sakaniwa (ICASSP, 1999)

A Nonlinear Pre-Filtering Technique for Set-Theoretic Linear Blind Deconvolution Scheme. - Isao Yamada; Masanori Kato; Kohichi Sakaniwa (ICIP (2), 1999)

A Simple Least-Squares Design of M-D IIR Filters with Fixed Separable Denominator Based on Multivariate Division Algorithm. - Hiroshi Hasegawa; Isao Yamada; Kohichi Sakaniwa (Multidimens. Syst. Signal Process., 2000)

A hidgher order generalization of an alias-free discrete time-frequency analysis. - Hiroshi Hasegawa; Yasuhiro Miki; Isao Yamada; Kohichi Sakaniwa (ICASSP, 2002)

Spectrum estimation of real vector wide sense stationary processes by the Hybrid Steepest Descent Method. - Konstantinos Slavakis; Isao Yamada; Kohichi Sakaniwa (ICASSP, 2002)

A truncated polynomial interpolation theorem and its application to the WLS design of IIR filters. - Hiroshi Hasegawa; Masashi Nakagawa; Isao Yamada; Kohichi Sakaniwa (ISCAS (5), 2002)

Fast Acquisition of PN Sequences in DS/CDMA Systems. - Sergei Bychenkov; Vladimir Mikhailov; Kohichi Sakaniwa (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2002)

A Higher Order Generalization of an Alias-Free Discrete Time-Frequency Analysis. - Hiroshi Hasegawa; Yasuhiro Miki; Isao Yamada; Kohichi Sakaniwa (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2002)

A Truncated Polynomial Interpolation and Its Application to Polynomially WLS Design of IIR Filters. - Hiroshi Hasegawa; Masashi Nakagawa; Isao Yamada; Kohichi Sakaniwa (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2003)

Detailedly Represented Irregular Low-Density Parity-Check Codes. - Kenta Kasai; Tomoharu Shibuya; Kohichi Sakaniwa (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2003)

On Tanner's Lower Bound for the Minimum Distance of Regular LDPC Codes Based on Combinatorial Designs. - Tomoharu Shibuya; Masatoshi Onikubo; Kohichi Sakaniwa (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2003)

Construction of Cyclic Codes Suitable for Iterative Decoding via Generating Idempotents. - Tomoharu Shibuya; Kohichi Sakaniwa (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2003)

Performance of a Decoding Algorithm for LDPC Codes Based on the Concave-Convex Procedure. - Tomoharu Shibuya; Kohichi Sakaniwa (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2003)

A Note on Robust Adaptive Volterra Filtering Based on Parallel Subgradient Projection Techniques. - Isao Yamada; Takuya Okada; Kohichi Sakaniwa (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2003)

Computation of symmetric positive definite Toeplitz matrices by the hybrid steepest descent method. - Konstantinos Slavakis; Isao Yamada; Kohichi Sakaniwa (Signal Process., 2003)

A fast blind multiple access interference reduction in DS/CDMA systems by adaptive projected subgradient method. - Renato L. G. Cavalcante; Isao Yamada; Kohichi Sakaniwa (EUSIPCO, 2004)

An efficient encoding method for LDPC codes based on cyclic shift. - Hachiro Fujita; Kohichi Sakaniwa (ISIT, 2004)

Asymptotic weight and stopping set distributions for detailedly represented irregular LDPC code ensembles. - Ryoji Ikegaya; Kenta Kasai; Tomoharu Shibuya; Kohichi Sakaniwa (ISIT, 2004)

An adaptive super-resolution of videos with noise information on camera systems. - Toshiyuki Ono; Hiroshi Hasegawa; Isao Yamada; Kohichi Sakaniwa (ICASSP (2), 2005)

A color super-resolution with multiple nonsmooth constraints by hybrid steepest descent method. - Ryota Sasahara; Hiroshi Hasegawa; Isao Yamada; Kohichi Sakaniwa (ICIP (1), 2005)

An algebraic method for constructing efficiently encodable irregular LDPC codes. - Hachiro Fujita; Maki Ohata; Kohichi Sakaniwa (ISIT, 2005)

Stopping set distributions of two-edge type LDPC code ensembles. - Ryoji Ikegaya; Kenta Kasai; Yuji Shimoyama; Tomoharu Shibuya; Kohichi Sakaniwa (ISIT, 2005)

Justesen-Type Modified Expander Codes and Their Decoding Algorithm. - Hachiro Fujita; Kohichi Sakaniwa (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2005)

Some Classes of Quasi-Cyclic LDPC Codes: Properties and Efficient Encoding Method. - Hachiro Fujita; Kohichi Sakaniwa (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2005)

An Iterative MPEG Super-Resolution with an Outer Approximation of Framewise Quantization Constraint. - Hiroshi Hasegawa; Toshiyuki Ono; Isao Yamada; Kohichi Sakaniwa (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2005)

Weight and Stopping Set Distributions of Two-Edge Type LDPC Code Ensembles. - Ryoji Ikegaya; Kenta Kasai; Yuji Shimoyama; Tomoharu Shibuya; Kohichi Sakaniwa (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2005)

Iterative Decoding Based on the Concave-Convex Procedure. - Tomoharu Shibuya; Ken Harada; Ryosuke Tohyama; Kohichi Sakaniwa (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2005)

A Subspace Blind Identification Algorithm with Reduced Computational Complexity - Colored Noise Case - . - Nari Tanabe; Toshihiro Furukawa; Kohichi Sakaniwa; Shigeo Tsujii (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2005)

Second Support Weight Distribution of Regular LDPC Code Ensembles. - Takayuki Itsui; Kenta Kasai; Ryoji Ikegaya; Tomoharu Shibuya; Kohichi Sakaniwa (ISIT, 2006)

The Block Error Probability of Detailedly Represented Irregular LDPC Code Ensembles under Maximum Likelihood Decoding. - Ryoji Ikegaya; Kenta Kasai; Tomoharu Shibuya; Koichi Sakaniwa (ITW, 2006)

Fast Acquisition of PN Sequences in DS-CDMA Systems with Incoherent Demodulator. - Sergei Bychenkov; Vladimir Mikhailov; Kohichi Sakaniwa (IEICE Trans. Commun., 2006)

Design of Irregular Repeat Accumulate Codes with Joint Degree Distributions. - Kenta Kasai; Shinya Miyamoto; Tomoharu Shibuya; Kohichi Sakaniwa (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2006)

Average Coset Weight Distribution of Multi-Edge Type LDPC Code Ensembles. - Kenta Kasai; Yuji Shimoyama; Tomoharu Shibuya; Kohichi Sakaniwa (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2006)

Tight Bounds of Minimum Distance Distributions of Irregular LDPC Code Ensembles. - Shinya Miyamoto; Kenta Kasai; Tomoharu Shibuya; Kohichi Sakaniwa (ISIT, 2007)

Performance of Standard Irregular LDPC Codes under Maximum Likelihood Decoding. - Ryoji Ikegaya; Kenta Kasai; Tomoharu Shibuya; Kohichi Sakaniwa (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2007)

Average Bit Erasure Probability of Regular LDPC Code Ensembles under MAP Decoding over BEC. - Takayuki Itsui; Kenta Kasai; Ryoji Ikegaya; Tomoharu Shibuya; Kohichi Sakaniwa (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2007)

Sufficient Conditions for a Regular LDPC Code Better than an Irregular LDPC Code. - Shinya Miyamoto; Kenta Kasai; Kohichi Sakaniwa (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2007)

Modified Low-Density MDS Array Codes for Tolerating Double Disk Failures in Disk Arrays. - Hachiro Fujita; Kohichi Sakaniwa (IEEE Trans. Computers, 2007)

Asymptotic bit error probability of LDPC codes for the binary erasure channel with finite number of iterations. - Ryuhei Mori; Kenta Kasai; Tomoharu Shibuya; Kohichi Sakaniwa (ISIT, 2008)

Two-edge type LDPC code ensembles with exponentially few codewords with linear small weight. - Tsuyoshi Nakasendo; Kenta Kasai; Tomoharu Shibuya; Kohichi Sakaniwa (ISIT, 2008)

The Asymptotic Bit Error Probability of LDPC Codes for the Binary Erasure Channel with Finite Iteration Number - Ryuhei Mori; Kenta Kasai; Tomoharu Shibuya; Kohichi Sakaniwa (CoRR, 2008)

An Edge-Preserving Super-Precision for Simultaneous Enhancement of Spacial and Grayscale Resolutions. - Hiroshi Hasegawa; Toshinori Ohtsuka; Isao Yamada; Kohichi Sakaniwa (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2008)

Detailed Evolution of Degree Distributions in Residual Graphs with Joint Degree Distributions. - Takayuki Nozaki; Kenta Kasai; Tomoharu Shibuya; Kohichi Sakaniwa (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2008)

Finite-length analysis of irregular expurgated LDPC codes under finite number of iterations. - Kenta Kasai; Ryuhei Mori; Toshiyuki Tanaka; Kohichi Sakaniwa (ISIT, 2009)

Analytical solution of covariance evolution for regular LDPC codes. - Kohichi Sakaniwa; Kenta Kasai; Takayuki Nozaki (ISIT, 2009)

Terminated LDPC convolutional codes over GF(2p). - Hironori Uchikawa; Kenta Kasai; Kohichi Sakaniwa (Allerton, 2010)

Rate-Compatible Slepian-Wolf Coding with Short Non-Binary LDPC Codes. - Kenta Kasai; Takayuki Tsujimoto; Ryutaroh Matsumoto; Kohichi Sakaniwa (DCC, 2010)

Rate-compatible non-binary LDPC codes concatenated with multiplicative repetition codes. - Kenta Kasai; David Declercq; Charly Poulliat; Koichi Sakaniwa (ISIT, 2010)

Error floors of non-binary LDPC codes. - Takayuki Nozaki; Kenta Kasai; Koichi Sakaniwa (ISIT, 2010)

Information reconciliation for QKD with rate-compatible non-binary LDPC codes. - Kenta Kasai; Ryutaroh Matsumoto; Kohichi Sakaniwa (ISITA, 2010)

Multiplicatively Repeated Non-Binary LDPC Codes - Kenta Kasai; David Declercq; Charly Poulliat; Kohichi Sakaniwa (CoRR, 2010)

Fountain Codes with Multiplicatively Repeated Non-Binary LDPC Codes - Kenta Kasai; Kohichi Sakaniwa (CoRR, 2010)

Terminated LDPC Convolutional Codes over GF(2^p) - Hironori Uchikawa; Kenta Kasai; Kohichi Sakaniwa (CoRR, 2010)

Weight Distributions of Multi-Edge Type LDPC Codes. - Kenta Kasai; Tomoharu Awano; David Declercq; Charly Poulliat; Kohichi Sakaniwa (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2010)

Fourier Domain Decoding Algorithm of Non-binary LDPC Codes for Parallel Implementation. - Kenta Kasai; Kohichi Sakaniwa (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2010)

Spatially coupled quasi-cyclic quantum LDPC codes. - Manabu Hagiwara; Kenta Kasai; Hideki Imai; Kohichi Sakaniwa (ISIT, 2011)

Non-binary quasi-cyclic quantum LDPC codes. - Kenta Kasai; Manabu Hagiwara; Hideki Imai; Kohichi Sakaniwa (ISIT, 2011)

Spatially coupled LDPC codes for decode-and-forward in erasure relay channel. - Hironori Uchikawa; Kenta Kasai; Kohichi Sakaniwa (ISIT, 2011)

Simple Low-Rate Non-Binary LDPC Coding for Relay Channels - Puripong Suthisopapan; Kenta Kasai; Anupap Meesomboon; Virasit Imtawil; Kohichi Sakaniwa (CoRR, 2011)

Weight Distributions of Non-binary LDPC Codes. - Kenta Kasai; Charly Poulliat; David Declercq; Kohichi Sakaniwa (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2011)

Spatially-Coupled MacKay-Neal Codes and Hsu-Anastasopoulos Codes. - Kenta Kasai; Kohichi Sakaniwa (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2011)

Analysis of Error Floors of Non-binary LDPC Codes over MBIOS Channel. - Takayuki Nozaki; Kenta Kasai; Kohichi Sakaniwa (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2011)

Analysis of Stopping Constellation Distribution for Irregular Non-binary LDPC Code Ensemble. - Takayuki Nozaki; Kenta Kasai; Kohichi Sakaniwa (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2011)

Spatially Coupled Protograph-Based LDPC Codes for Decode-and-Forward in Erasure Relay Channel. - Hironori Uchikawa; Kenta Kasai; Kohichi Sakaniwa (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2011)

Design and Performance of Rate-Compatible Non-binary LDPC Convolutional Codes. - Hironori Uchikawa; Kenta Kasai; Kohichi Sakaniwa (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2011)

Multiplicatively Repeated Nonbinary LDPC Codes. - Kenta Kasai; David Declercq; Charly Poulliat; Kohichi Sakaniwa (IEEE Trans. Inf. Theory, 2011)

Threshold improvement of low-density lattice codes via spatial coupling. - Hironori Uchikawa; Brian M. Kurkoski; Kenta Kasai; Kohichi Sakaniwa (ICNC, 2012)

Spatially-coupled binary MacKay-Neal codes for channels with non-binary inputs and affine subspace outputs. - Kenta Kasai; Takayuki Nozaki; Kohichi Sakaniwa (ISIT, 2012)

Analysis of error floors of generalized non-binary LDPC codes over q-ary memoryless symmetric channels. - Takayuki Nozaki; Kenta Kasai; Kohichi Sakaniwa (ISIT, 2012)

Code design for very noisy relay channels. - Puripong Suthisopapan; Kenta Kasai; Anupap Meesomboon; Virasit Imtawil; Kohichi Sakaniwa (ISIT, 2012)

Iterative encoding with Gauss-Seidel method for spatially-coupled low-density lattice codes. - Hironori Uchikawa; Brian M. Kurkoski; Kenta Kasai; Kohichi Sakaniwa (ISIT, 2012)

Efficient termination of spatially-coupled codes. - Koji Tazoe; Kenta Kasai; Kohichi Sakaniwa (ITW, 2012)

Analysis of Error Floors of Non-binary LDPC Codes over BEC. - Takayuki Nozaki; Kenta Kasai; Kohichi Sakaniwa (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2012)

Analysis of Error Floors for Non-binary LDPC Codes over General Linear Group through q-Ary Memoryless Symmetric Channels. - Takayuki Nozaki; Kenta Kasai; Kohichi Sakaniwa (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2012)

Simple Nonbinary Coding Strategy for Very Noisy Relay Channels. - Puripong Suthisopapan; Kenta Kasai; Anupap Meesomboon; Virasit Imtawil; Kohichi Sakaniwa (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2012)

Fountain Coding via Multiplicatively Repeated Non-Binary LDPC Codes. - Kenta Kasai; David Declercq; Kohichi Sakaniwa (IEEE Trans. Commun., 2012)

Quantum Error Correction Beyond the Bounded Distance Decoding Limit. - Kenta Kasai; Manabu Hagiwara; Hideki Imai; Kohichi Sakaniwa (IEEE Trans. Inf. Theory, 2012)

Analytical Solution of Covariance Evolution for Irregular LDPC Codes. - Takayuki Nozaki; Kenta Kasai; Kohichi Sakaniwa (IEEE Trans. Inf. Theory, 2012)

Message passing algorithm with MAP decoding on zigzag cycles for non-binary LDPC codes. - Takayuki Nozaki; Kenta Kasai; Kohichi Sakaniwa (ISIT, 2013)

Spatially-coupled precoded rateless codes. - Kosuke Sakata; Kenta Kasai; Kohichi Sakaniwa (ISIT, 2013)

Weight Distribution for Non-binary Cluster LDPC Code Ensemble. - Takayuki Nozaki; Masaki Maehara; Kenta Kasai; Kohichi Sakaniwa (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2013)

Effects of Single-Cycle Structure on Iterative Decoding of Low-Density Parity-Check Codes. - Ryuhei Mori; Toshiyuki Tanaka; Kenta Kasai; Kohichi Sakaniwa (IEEE Trans. Inf. Theory, 2013)

Spatially-coupled precoded rateless codes with bounded degree achieve the capacity of BEC under BP decoding. - Kosuke Sakata; Kenta Kasai; Kohichi Sakaniwa (ISIT, 2014)

Non-binary LDPC codes with large alphabet size. - Koji Tazoe; Kenta Kasai; Kohichi Sakaniwa (ISIT, 2014)

Message Passing Decoder with Decoding on Zigzag Cycles for Non-binary LDPC Codes. - Takayuki Nozaki; Kenta Kasai; Kohichi Sakaniwa (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2014)