A Hammerstein Diversity Combining Technique

In wireless communication channels fading phenomenon imposes serious limitations upon the systemperformance. diversity combining is a well known fading compensation technique. in this paper we propose adiversity combining technique based on a nonlinear hammerstein type filter to mitigate the destructive fading effect.in the present work, frequency selective rayleigh fading channels in presence of additive white gaussian noise areconsidered and m-ary pam modulation is employed. we first present a theoretical analysis to justify our proposedsystem. then the system performance for different power delay profiles and different m-ary pam modulations areinvestigated. comparison of simulation results based on our proposed technique with the results obtained when linearequalizing filters are employed, shows that our technique leads to a considerably higher ber performance at highersnrs. we also show that our method has a lower complexity than the linear structure. also, a relative reliabilityfactor for the system is defined and investigated.