Citation
Abstract
Due to the hardware design of Galileo’s Command and Data Subsystem (CDS), the channel code usable in an S-band (2290-2300 MHz) mission must include the NASA standard (7,1/2) convolutional code. Galileo’s hardware encoder for the (15,1/4) code is not usable in S-band mode. However, the need for higher coding gain dictates the use of long constraint Jength convolutional codes. Theoretical results show how a large subclass of such codes is realizable by using a software encoder in the CDS cascaded with the hardware encoder for the NASA standard code.
Details
- Volume
- 42-110
- Published
- August 15, 1992
- Pages
- 202–207
- File Size
- 177.2 KB