Magazine Article

Truncation Depth Rule-of-Thumb for Convolutional Codes

TBMG-3506

01/01/2009

Abstract
Content

In this innovation, it is shown that a commonly used rule of thumb (that the truncation depth of a convolutional code should be five times the memory length, m, of the code) is accurate only for rate 1/2 codes. In fact, the truncation depth should be 2.5 m/(1 – r), where r is the code rate. The accuracy of this new rule is demonstrated by tabulating the distance properties of a large set of known codes. This new rule was derived by bounding the losses due to truncation as a function of the code rate.

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Citation
"Truncation Depth Rule-of-Thumb for Convolutional Codes," Mobility Engineering, January 1, 2009.
Additional Details
Publisher
Published
Jan 1, 2009
Product Code
TBMG-3506
Content Type
Magazine Article
Language
English