TIT
2002
13 years 11 months ago
2002
We consider a two-dimensional problem of positron emission tomography where the random mechanism of the generation of the tomographic data is modeled by Poisson processes. The goa...
TIT
2002
13 years 11 months ago
2002
We consider Gallager's soft decoding (belief propagation) algorithm for decoding low density parity check (LDPC) codes, when applied to an arbitrary binary-input symmetric-ou...
TIT
2002
13 years 11 months ago
2002
We derive upper bounds on the rate of low density parity check (LDPC) codes for which reliable communication is achievable. We first generalize Gallager's bound to a general ...
TIT
2002
13 years 11 months ago
2002
TIT
2002
13 years 11 months ago
2002
We present a framework for iterative multiuser joint decoding of code-division multiple-access (CDMA) signals, based on the factor-graph representation and on the sum-product algor...
TIT
2002
13 years 11 months ago
2002
Abstract--We adapt methods originally developed in information and coding theory to solve some testing problems. The efficiency of two-stage pool testing of items is characterized ...
TIT
2002
13 years 11 months ago
2002
The entanglement-assisted classical capacity of a noisy quantum channel ( ) is the amount of information per channel use that can be sent over the channel in the limit of many uses...
TIT
2002
13 years 11 months ago
2002
TIT
2002
13 years 11 months ago
2002
We derive the Gilbert
TIT
2002
13 years 11 months ago
2002
Abstract--Minimum distances, distance distributions, and error exponents on a binary-symmetric channel (BSC) are given for typical codes from Shannon's random code ensemble an...