Multisequences with high joint nonlinear complexity
  We introduce the new concept of joint nonlinear complexity for multisequences over finite fields and we analyze the joint nonlinear complexity of two families of explicit inversive multisequences. We also establish a probabilistic result on the behavior of the joint nonlinear complexity of random multisequences over a fixed finite field. 
Wilfried Meidl and Harald Niederreiter
cs.IT math.IT