Title :
Investigation of a cost function for blind equalization based on the Nakagami fading index
Author :
Brandao, A.L. ; McLernon, D.C. ; Lopes, L.B.
Author_Institution :
Dept. of Electron. & Electr. Eng., Leeds Univ., UK
Abstract :
Radio signals arriving from cellular mobile systems in urban areas can be modelled as a random process having the Nagakami-Rice probability density function. This assumption is made in order to design a receiver for combating the effects of multipath propagation for M-ary PSK modulated signals. A parameter based on the Nagakami fading index is explored and taken to construct a cost function to be minimized. The error surface is investigated and some strategies are examined for designing an equalizer. A modified constant modulus algorithm is presented and simulations are performed to test the efficiency of the proposed filter
Keywords :
cellular radio; equalisers; error analysis; fading; filtering theory; indoor radio; intersymbol interference; land mobile radio; multipath channels; phase shift keying; radio receivers; radiofrequency interference; random processes; signal detection; M-ary PSK modulated signals; Nagakami-Rice probability density function; Nakagami fading index; blind equalization; cellular mobile systems; cost function; equalizer; error surface; filter; modified constant modulus algorithm; multipath propagation; random process; receiver; urban areas; Blind equalizers; Cost function; Fading; Phase shift keying; Probability density function; Random processes; Receivers; Signal design; Signal processing; Urban areas;
Conference_Titel :
Vehicular Technology Conference, 1994 IEEE 44th
Conference_Location :
Stockholm
Print_ISBN :
0-7803-1927-3
DOI :
10.1109/VETEC.1994.345125
