LFSR

Noun

Meaning

LFSR (plural LFSRs)

Initialism of linear feedback shift register.

Examples

Additive scrambler/descrambler is defined by the polynomial of its LFSR (for the scrambler on the picture above, it is ) and its initial state. Source: Internet

All current systems use LFSR outputs to generate some or all of their ranging codes (as the chipping code for CDMA or DSSS) or to modulate the carrier without data (like GPS L2 CL ranging code). Source: Internet

However, it is necessary to ensure that the LFSR never enters an all-zeros state, for example by presetting it at start-up to any other state in the sequence. Source: Internet

A receiver searches for a few sync-words in adjacent frames and hence determines the place when its LFSR must be reloaded with a pre-defined initial state. Source: Internet

BIST is accomplished with a multiple-input signature register (MISR or MSR), which is a type of LFSR. Source: Internet

Filter generator Another approach to improving the security of an LFSR is to pass the entire state of a single LFSR into a non-linear filtering function. Source: Internet

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