Apparatus for indicating synchronization of a radio receiver...

Details Apparatus for indicating synchronization of a radio receiver... Apparatus for indicating synchronization of a radio receiver...

H - Electricity

04

B

325/16, 340/165,

H04B 1/00 (2006.01) H04L 7/04 (2006.01)

Patent

CA 1083223

ABSTRACT OF THE DISCLOSURE In a radio communication system having a base or command station and one or more controlled stations, the base station transmits outbound binary messages to the controlled stations in order to make an inquiry or give a command to the controlled stations. Each controlled station responds to its address message with an inbound binary message. In order for the stations to synchronize with messages transmitted to them, each outbound message and each inbound message includes three spaced binary synchronizing code words having nine bit values 011100100 in sequence, nine additional bit values 100011011 in sequence, and nine additional bit values 100011011 in sequence. Or, the three synchronizing words may have the bit values 001001110, 110110001, 110110001 respectively. These synchronizing code words enable controlled stations to synchronize with an outbound message and enable the base station to synchronize with an inbound message quickly and reliably.

252393

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