XORing bits to eliminate skew

georgemw at speakeasy.net georgemw at speakeasy.net
Thu Oct 17 12:22:56 PDT 2002

BTW, if the bits are assumed to be independent of
each other and you're only concerned with eliminating skew,
there's a well known simple scheme to eliminate it

group the bits into pairs
if the pair is 00 or 11 toss it
if the pair is 01 map it to zero
if the pair is 10 map it to 1

this method gets you a fourfold reduction
in the number of bits in the best case.


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