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@ -5,6 +5,7 @@ taxonomy:
- docs
simple-responsive-tables:
active: true
media_order: 'convolutional.svg,frame_encoding.svg,link_setup_frame_encoding.svg,packet_frame_encoding.svg'
---
### 4FSK generation
@ -112,6 +113,10 @@ A 40-bit (type 1) chunk of the LSF along with a 3-bit modulo 6 counter (LICH_CNT
The LICH chunks allow for late listening and indepedent decoding to check destination address. The goal is to require less complexity to decode just the LICH and check if the full message should be decoded.
#### Packet Frame Encoding
![packet_frame_encoding](packet_frame_encoding.svg?classes=caption "Packet Frame Encoding")
#### Extended Golay(24,12) code
The extended Golay(24,12) encoder uses generating polynomial g given below to generate the 11 check bits. The check bits and an additional parity bit are appended to the 12 bit data, resulting in a 24 bit codeword. The resulting code is systematic, meaning that the input data (message) is embedded in the codeword.