Decision feedback postprocessor for zero-crossing digital FM demodulator

Author

Lee, Kwang Bok ; Hou, Weiguang ; Kwon, Hyuck M.

Author_Institution

Sch. of Electr. Eng., Seoul Nat. Univ., South Korea

Volume

48

Issue

6

fYear

1999

fDate

11/1/1999 12:00:00 AM

Firstpage

1954

Lastpage

1958

Abstract

A baseband digital narrow-band FM receiver, called zero-intermediate frequency zero-crossing demodulator (ZIFZCD), has been developed. This demodulator may offer low complexity and simple implementation. However, the bit error rate (BER) performance of the ZIFZCD is inferior to that of the limiter-discriminator-integrate-and-dump (LDI) demodulator. In this paper, a simple decision feedback postprocessor (DFP) is proposed to improve the performance of the ZIFZCD. Analysis and simulation BER results of the ZIFZCD with the DFP are presented for minimum-shift keying (MSK) and Gaussian MSK (GMSK) signals under additive white Gaussian noise (AWGN) and mobile fading environments

Keywords

AWGN channels; demodulators; digital radio; error statistics; fading channels; feedback; frequency modulation; integrating circuits; land mobile radio; limiters; minimum shift keying; radio receivers; signal processing; AWGN channels; BER performance; BER results; GMSK signals; Gaussian MSK signals; MSK; additive white Gaussian noise; baseband digital narrowband FM receiver; bit error rate; decision feedback postprocessor; digital wireless communication systems; limiter-discriminator-integrate-and-dump demodulator; low complexity demodulator; minimum-shift keying; mobile fading environment; simulation results; zero-crossing digital FM demodulator; AWGN; Additive white noise; Analytical models; Baseband; Bit error rate; Demodulation; Feedback; Frequency; Narrowband; Signal analysis;

fLanguage

English

Journal_Title

Vehicular Technology, IEEE Transactions on

Publisher

ieee

ISSN

0018-9545

Type

jour

DOI

10.1109/25.806788

Filename

806788