The effects of linear increment, linear decrement, Gray code and random mapping of data on the performance of a (12/Y) multiple pulse position modulation (PPM) system are presented. Simulations show that the Gray code is the most effective as it minimises the Hamming distance between adjacent multiple PPM words.
Published in:
Electronics Letters
(Volume:43
,
Issue:
19
)
Date of Publication: September 13 2007