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Unformatted text preview: de an overall Codeblock
length which is an integer number of octets. This Filler Bit shall always be a zero.
3.2.2 COMMAND LINK TRANSMISSION UNIT (CLTU) FORMAT The CLTU is the data structure which carries the TC data as a contiguous series of encoded
TC Codeblocks across the Channel Service. The encoded TC data within the CLTU consist
of Input Data from the layer above. The CLTU has the structural components shown in
COMMAND LINK TRANSMISSION UNIT
TC DATA TAIL
BITS TC CODEBLOCKS LENGTH OF
CODEBLOCK Figure 3-2: Components of the CLTU
CLTU Start Sequence. The CLTU Start Sequence field delimits the start of the
encoded TC data within the CLTU. It consists of a 16-bit synchronization pattern with low
autocorrelation sidelobes and shall have the following pattern:
1110101110010000 BIT 0 BIT 15 18.104.22.168
Encoded TC Data. The Encoded TC Data field consists of a set of TC
Codeblocks which have been encoded in accordance with the TC Codeblock encoding
procedure. In addition to error control bits, these codeblocks contain the Input Data to this
layer, plus any fill bits...
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- Spring '14