Title :
Cosine series function design of offset quadrature binary modulation systems
Author :
Vigil, A.J. ; Belkerdid, M.A. ; Malocha, D.C.
Author_Institution :
Electron Decisions Inc., Urbana, IL, USA
Abstract :
The authors apply the finite truncated cosine series to the design of baseband symbol shapes for full response signaling quadrature binary modulation systems. Design examples are provided. The respective modulation techniques quadrature phase shift keying (QPSK), minimum shift keying (MSK), sinusoidal frequency shift keying (SFSK), and double sine frequency shift keying (DSFSK) on the basis of modulated signal envelope uniformity and spectral confinement. It is shown that the freedom to select spectral zeroes in the closed-form design of the pulse shape introduces a vehicle for suppressing narrowband interference without introducing intersymbol interference into the system. Modulation system implementations are proposed and discussed
Keywords :
frequency shift keying; minimum shift keying; phase shift keying; series (mathematics); signal synthesis; DSFSK; MSK; QPSK; SFSK; baseband symbol shapes; closed-form design; double sine frequency shift keying; finite truncated cosine series; full response signaling; minimum shift keying; modulated signal envelope uniformity; narrowband interference suppression; offset quadrature binary modulation; pulse shape; quadrature phase shift keying; sinusoidal frequency shift keying; spectral confinement; Baseband; Frequency shift keying; Intersymbol interference; Narrowband; Phase modulation; Pulse shaping methods; Quadrature phase shift keying; Shape; Signal design; Vehicles;
Conference_Titel :
Military Communications Conference, 1991. MILCOM '91, Conference Record, Military Communications in a Changing World., IEEE
Conference_Location :
McLean, VA
Print_ISBN :
0-87942-691-8
DOI :
10.1109/MILCOM.1991.258316
