Title :
Design of Oversampled Filter Bank Based Widely Linear OQPSK Equalizer
Author :
Carson, P.K.S. ; Truong, N.Q.
Author_Institution :
Dept. of Electr. & Comput. Eng., California Univ., San Diego, La Jolla, CA, USA
Abstract :
In this paper, the design and analysis of multirate filter bank (FB) based OQPSK widely linear (WL) oversampled equalizers for frequency selectively channels (FSCs) are studied. We focus on OQPSK signal transmissions in FSCs with various amount of fractionally spaced equalization using WL processing under the framework of FB. We explicitly represent a OQPSK communications system as a FB which allows the study of conditions for perfect reconstruction using a finite length polynomial equalizer. Furthermore, WL FB based MMSE oversampled equalizer designs operating at various sampling rates are presented. Computer simulations are simulated to study the performance of various types of equalizers in FSCs.
Keywords :
channel bank filters; equalisers; least mean squares methods; polynomial approximation; quadrature phase shift keying; MMSE oversampled equalizer; computer simulations; finite length polynomial equalizer; fractionally spaced equalization; frequency selectively channels; linear OQPSK equalizer; multirate filter bank; oversampled filter bank; signal transmissions; widely linear oversampled equalizers; Computational modeling; Computer simulation; Equalizers; Filter bank; Frequency; Matrix decomposition; Polynomials; Power capacitors; Sampling methods; Signal processing; Equalizer; Filter Bank; OQPSK;
Conference_Titel :
Acoustics, Speech and Signal Processing, 2007. ICASSP 2007. IEEE International Conference on
Conference_Location :
Honolulu, HI
Print_ISBN :
1-4244-0727-3
DOI :
10.1109/ICASSP.2007.366816
