Title :
Joint pre and postfilter design for spatial diversity equalization
Author :
Song, Bong-Gee ; Ritcey, James A.
Author_Institution :
Dept. of Electr. Eng., Washington Univ., Seattle, WA, USA
fDate :
1/1/1997 12:00:00 AM
Abstract :
A joint FIR pre and postfilter design for MIMO communications is proposed. The prefilter controls the transmitted signal spectrum and greatly reduces the error rate. We use random search to minimize the mean square error. The proposed method is applied to ocean acoustic channels with an array of spatially diverse antennas. Our results show that the joint design of the pre and postfilter dramatically improves both SISO and especially MIMO channels
Keywords :
FIR filters; MIMO systems; array signal processing; diversity reception; equalisers; filtering theory; search problems; underwater sound; MIMO channels; MIMO communications; SISO channels; error rate reduction; mean square error; ocean acoustic channels; postfilter design; prefilter design; random search; spatial diversity equalization; spatially diverse antenna array; transmitted signal spectrum control; Acoustic arrays; Communication system control; Design methodology; Equalizers; Error analysis; Finite impulse response filter; MIMO; Mean square error methods; Oceans; Radiofrequency interference;
Journal_Title :
Signal Processing, IEEE Transactions on
