H - Electricity – 04 – J
Patent
H - Electricity
04
J
363/10.1
H04J 3/14 (2006.01) H04L 7/04 (2006.01)
Patent
CA 2020343
There are TDM communication systems in which synchron- ization is accomplished by means of code words which are transmitted at regular time intervals and coded in a particular code. In systems where the signals are trans- mitted in packets of uniform length, each of the code words contains the information of the so-called header of a packet. The checking device according to the inven- tion successively checks all n-bit bit groups (Xj to Xj+n-1) beginning with any one (Xj) of the successive bits of the received bit sequence as to whether they are coded in a particular code. This is done by calcu- lating the syndrome (S1 to Sn-k) in several networks (N1 to Nn-k) which operate in parallel and each of which calculates one syndrome component. The received bit se- quence is delayed until the networks have calculated the syndromes for a given n-bit bit group and until a syndrome evaluation circuit (LS) indicates whether the bit group is a code word.
Alcatel N.v.
Smart & Biggar
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