WORST-CASE ERROR-PROBABILITY OF A SPREAD-SPECTRUM SYSTEM IN ENERGY-LIMITED INTERFERENCE

We consider a communication channel corrupted by thermal noise and by an unknown and arbitrary interference of bounded energy, For this chan nel, we derive a simple upper bound to the worst-case error probabilit y suffered by a direct-sequence (DS) communication system with error-c orrection coding, pseudorandom interleaving, and a correlation receive r, This bound is exponentially tight as the block length of the error- correcting code becomes large, Numerical examples are given that illus trate the dependence of the hound on the choice of error-correcting co de, the type of interleaving used, and the relative energy of the Gaus sian noise and arbitrary interference.