Design of Nyquist and near-Nyquist pulses with spectral constraints

Author

Jayasimha, S. ; Singh, P.K.

Author_Institution

Signion Syst. Ltd., Hyderabad, India

fYear

2000

fDate

2000

Firstpage

38

Lastpage

42

Abstract

Two design procedures, one based on switched pulse shapes, and the other based on alternating projections in the time and frequency domain, are used to obtain interference and jitter-free or reduced interference and jitter (near-Nyquist) pulse-shaping filters. The latter method, that incorporates both frequency- and time- domain constraints into the linear filter design procedure, allows common pulse-shaping filters to be used for both QPSK and 8-PSK used in contemporary satellite modems

Keywords

filtering theory; jitter; pulse shaping circuits; quadrature phase shift keying; radiofrequency interference; satellite communication; time-frequency analysis; 8-PSK; QPSK; alternating projections; interference-free; jitter-free; linear filter design procedure; near-Nyquist pulses; pulse-shaping filters; satellite modems; spectral constraints; switched pulse shapes; time-frequency domain; Band pass filters; Bandwidth; Chirp modulation; Digital filters; Frequency; Interference; Nonlinear filters; Optical signal processing; Pulse shaping methods; Shape;

fLanguage

English

Publisher

ieee

Conference_Titel

Personal Wireless Communications, 2000 IEEE International Conference on

Conference_Location

Hyderabad

Print_ISBN

0-7803-5893-7

Type

conf

DOI

10.1109/ICPWC.2000.905769

Filename

905769