3.9 Time-Division Multiplexing coincident: at each clock, a new binary bit of TDM data stream is clocked into the shift register, then, the data in it is corss-correlated with the expected unique sync word. If there is no difference, the coincident detector will output a binary l with Tb width, or will output a binary 0 with Tb width. → Received SW A1 A2 A3 SW TdM data k bits k bits k bits k bits bits Frame sync output 3k-bits information( known) sync Impuise sync impulse 1010 3.9 Time-Division Multiplexing • coincident: at each clock, a new binary bit of TDM data stream is clocked into the shift register, then, the data in it is corss-correlated with the expected unique sync word. If there is no difference, the coincident detector will output a binary 1 with Tb width, or will output a binary 0 with Tb width. SW A1 A2 A3 SW k bits k bits k bits k bits k bits 3k-bits information (known) sync impulse sync impulse Received TDM data Frame sync output