H - Electricity – 04 – L
Patent
H - Electricity
04
L
H04L 1/00 (2006.01) G06F 11/08 (2006.01) G06F 11/267 (2006.01) H04L 1/24 (2006.01)
Patent
CA 2046840
ABSTRACT OF THE DISCLOSURE A method for detecting a PN (Pseudo Noise) pattern for a remote loopback test in a communication system includes the following first through fifth steps. The first step receives a first n-bit pattern (n is an arbitrary number) which is a part of the PN pattern. The second step leftwardly shifts n bits of the first n-bit pattern by a first number of bits, so that a second n-bit pattern is generated. The third step executes an exclusive-OR operation on the n bits of the first n-bit pattern and n bits of the second n-bit pattern, so that a third n-bit pattern is generated. The fourth step rightwardly shifts n bits of the third n-bit pattern by a second number of bits, so that a fourth n-bit pattern is generated. The fifth step executes an exclusive-OR operation on the n bits of the third n-bit patterns and n bits of the fourth n-bit patterns, so that a fifth n-bit pattern is generated. The fifth n-bit pattern is a sixth n-bit pattern which is received after the first n-bit pattern. The first through fifth are repeatedly carried out each time n bits of the first n-bit pattern are received at the first step.
Fetherstonhaugh & Co.
Fujitsu Limited
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