{HEAD ~ The spread spectrum signals} of {TAIL ~ the present invention} are designed to be transparent to other users, i.e., spread spectrum signals are designed to provide negligible interference to the communication of other, existing users 
of
{ HEAD ~ The spread spectrum signals } of { TAIL ~ the present invention } are designed to be transparent to other users , i.e. , spread spectrum signals are designed to provide negligible interference to the communication of other , existing users
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