Equalisation and iterative reception for spectrally efficient CPM in multipath environments

Author

Brown, C. ; Vigneron, P.J.

Author_Institution

Commun. Res. Centre Canada, Ottawa, ON, Canada

fYear

2010

fDate

Oct. 31 2010-Nov. 3 2010

Firstpage

1719

Lastpage

1724

Abstract

Modern spectrally efficient continuous phase modulation (CPM) waveforms offer attractive properties for narrowband tactical communications operating in VHF/UHF 30-400MHz bands. These waveforms exhibit robustness to a significant amount of intersymbol interference, due to multipath propagation, when iterative receivers are used for demodulation and decoding. However, certain propagation characteristics encountered in mountainous or coastal terrains may represent exceptionally challenging multipath environments. In these scenarios, the use of simple types of channel equalisation schemes, with an iterative CPM receiver, is demonstrated to alleviate the detrimental impact of multipath propagation. The combined effect of equalisation and iterative demodulation and decoding is investigated as a method to operate under these conditions.

Keywords

UHF radio propagation; VHF radio propagation; channel estimation; continuous phase modulation; intersymbol interference; iterative decoding; military communication; multipath channels; radio receivers; radio reception; spectral analysis; wireless channels; UHF band; VHF band; channel equalisation; frequency 30 MHz to 400 MHz; intersymbol interference; iterative decoding; iterative receiver; iterative reception; multipath propagation; narrowband tactical communication; spectrally efficient CPM; spectrally efficient continuous phase modulation waveform; AWGN; Bit error rate; Delay; Iterative decoding; Receivers;

fLanguage

English

Publisher

ieee

Conference_Titel

MILITARY COMMUNICATIONS CONFERENCE, 2010 - MILCOM 2010

Conference_Location

San Jose, CA

ISSN

2155-7578

Print_ISBN

978-1-4244-8178-1

Type

conf

DOI

10.1109/MILCOM.2010.5680233

Filename

5680233