diff --git a/links.md b/links.md
index cc2fc8d..78f3c6b 100644
--- a/links.md
+++ b/links.md
@@ -9,3 +9,5 @@ https://www.sharetechnote.com/html/BasicProcedure_LTE_TimeSync.html
 https://twitter.com/DiGMi1/status/1463076874926673927
 
 https://github.com/tmbinc/random/tree/master/dji/ocusync2
+
+https://www.sharetechnote.com/html/Handbook_LTE_PseudoRandomSequence.html