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NASA NTRS · 20060041667

A Soft-Input Soft-Output APP Module for Iterative Decoding of Concatenated Codes

Benedetto, S.·Divsalar, D.·Montorsi, G.·Pollara, F.
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Abstract

Concatenated coding schemes consist of the combination of two or more simple constituent encoders and interleavers.

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Benedetto, S., Divsalar, D., Montorsi, G., Pollara, F.. 1997-01-01. A Soft-Input Soft-Output APP Module for Iterative Decoding of Concatenated Codes. https://ntrs.nasa.gov/citations/20060041667

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NASA NTRS2004

Future capabilities for the Deep Space Network

This paper will look at three new capabilities that are in different stages of development. First, turbo decoding, which provides improved telemetry performance for data rates up to about 1 Mbps, will be discussed. Next, pseudo-noise ranging will be presented. Pseudo-noise ranging has several advantages over the current sequential ranging, anmely easier operations, improved performance, and the capability to be used in a regenerative implementation on a spacecraft. Finally, Low Density Parity Check decoding will be discussed. LDPC codes can provide performance that matches or slightly exceed turbo codes, but are designed for use in the 10 Mbps range.

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