Kingo Kobayashi

Publications68
h-index15
Citations2,467
Highly Influential Citations285
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A new achievable rate region for the interference channel
TLDR
A new achievable rate region for the general interference channel which extends previous results is presented and evaluated and the capacity of a class of Gaussian interference channels is established.
A unified achievable rate region for a general class of multiterminal source coding systems
A unified treatment of a large class of multiterminal noiseless source coding problems including all previously studied situations is presented. A unified achievable rate region is established for…
Identifiability of hidden Markov information sources and their minimum degrees of freedom
TLDR
The identifiability problem is completely solved by linear algebra, where a block structure of a Markov transition matrix plays a fundamental role, and from which the minimum degree of freedom for a source is revealed.
Exponential-type error probabilities for multiterminal hypothesis testing
Multiterminal hypothesis testing is considered, subject to the exponential-type constraint alpha /sub n/ >
Noise Thresholds for Discrete LDPC Decoding Mappings
TLDR
For decoding low-density parity-check (LDPC) codes on discrete memoryless channels, a method to quantize messages and to find message-passing decoding functions for the variable and check nodes is developed and noise thresholds close to those of belief propagation are obtained.
A Dichotomy of Functions F ( X , Y ) o f Corre lated Sources ( X , Y ) from the Viewpoint o f the Achievable Rate Region
A dichotomy of functions F(X, Y) of correlated sources (X, Y)
TLDR
The necessary and sufficient condition for the set of all achievable rates to coincide with the Slepian-Wolf region whenever the probability density p(x, y) is positive for all (x,y) is established.
Mathematics of information and coding
The strong converse theorem for hypothesis testing
The authors present the answer to a so-called converse problem by giving the explicit form of the power exponent. This strong converse should be regarded as completing a weak converse previously…
A Further Consideration on the HK and the CMG regions for the Interference Channel
We present a simplified form of the HK (= HanKobayashi) achievable rate region for the general interference channel by using Fourier-Motzkin algorithm, as well as a simplified form of the HK region…
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