Adaptive decision method for restricted band digital FM

Author

Bolourchi, Nader ; Schilling, Donald L.

Author_Institution

Dept. of Eng. Technol., New York Inst. of Technol., Old Westbury, NY, USA

fYear

1992

Firstpage

501

Abstract

A technique for the detection of narrowband multilevel continuous phase frequency shift keyed signals (CPFSK signals) is introduced. This technique is a noncoherent demodulation which utilizes a limiter-discriminator-integrator (LDI) followed by a nonlinear postprocessor to combat the intersymbol interference caused by a bandlimiting filter. The error rate performance is computed for this receiver and compared with that of the LDI receiver. The proposed system was simulated and the bit error rate (BER) performances of 2, 4, and 8-ary CPFSK schemes were obtained. The proposed technique provides improved BER performances for narrowband digital FM. Simulation results have verified the superiority of this method

Keywords

adaptive filters; decision theory; demodulation; filtering and prediction theory; frequency shift keying; interference suppression; intersymbol interference; radio receivers; signal detection; CPFSK signals; FSK; LDI receiver; adaptive decision method; bandlimiting filter; bit error rate; error rate performance; intersymbol interference; limiter-discriminator-integrator; narrowband multilevel continuous phase frequency shift keyed signals; noncoherent demodulation; nonlinear postprocessor; radio receiver; restricted band digital FM; Adaptive signal detection; Bit error rate; Computational modeling; Demodulation; Filters; Frequency shift keying; Intersymbol interference; Narrowband; Phase detection; Phase frequency detector;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, 1992. ICC '92, Conference record, SUPERCOMM/ICC '92, Discovering a New World of Communications., IEEE International Conference on

Conference_Location

Chicago, IL

Print_ISBN

0-7803-0599-X

Type

conf

DOI

10.1109/ICC.1992.268080

Filename

268080