Space-Time-Frequency Shift Keying for Dispersive Channels

Author

Ngo, Hoang Anh ; Xu, Chao ; Sugiura, Shinya ; Hanzo, Lajos

Author_Institution

Sch. of Electron. & Comput. Sci., Univ. of Southampton, Southampton, UK

Volume

18

Issue

3

fYear

2011

fDate

3/1/2011 12:00:00 AM

Firstpage

177

Lastpage

180

Abstract

Inspired by the concept of the Space-Time Shift Keying (STSK) modulation, in this paper we proposed the Space-Frequency Shift Keying (SFSK) modulation as well as the Space-Time-Frequency Shift Keying (STFSK) concept which spreads the transmit signal not only across the space and time domains, but also the frequency domain. The performance of STSK modulation is degraded by about 2 dB, when the channel changes from uncorrelated frequency-flat fading to the frequency-selective environment of the 6-tap COST207 model. By contrast, as a benefit of Frequency Shift keying, the SFSK and STFSK schemes are capable of maintaining their performance also in frequency-selective fading environments. Finally, we demonstrate that the STSK and SFSK schemes constitute special cases of the STFSK modulation.

Keywords

dispersive channels; fading channels; frequency shift keying; modulation; space-time codes; 6-tap COST207 model; STFSK modulation; dispersive channel; frequency domain; frequency-selective environment; frequency-selective fading environment; space-frequency shift keying modulation; space-time-frequency shift keying; transmit signal; uncorrelated frequency-flat fading channel; Channel models; Dispersion; Fading; Frequency shift keying; Throughput; Dispersive channels; FSK; diversity; space-time-frequency processing;

fLanguage

English

Journal_Title

Signal Processing Letters, IEEE

Publisher

ieee

ISSN

1070-9908

Type

jour

DOI

10.1109/LSP.2011.2106773

Filename

5688440