ISI Mitigating Precoder Design Method for MISO FMT Systems

This paper considers the inter-symbol interference mitigating precoder design problem for filtered multi-tone (FMT) systems. In FMT systems, due to the time-domain overlapped impulse response of a prototype filter, the desired channel and the temporal interference, referred to as inter-symbol interf...

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Veröffentlicht in:Wireless personal communications Jg. 111; H. 4; S. 2155 - 2166
Hauptverfasser: Seo, Bangwon, Shin, Joonwoo
Format: Journal Article
Sprache:Englisch
Veröffentlicht: New York Springer US 01.04.2020
Springer Nature B.V
Schlagworte:
Approximation
Communications Engineering
Computer Communication Networks
Computer simulation
Engineering
Impulse response
Interference
Leakage
Lower bounds
MISO (control systems)
Networks
Signal,Image and Speech Processing
Symbols
Filtered multi-tone
ISI mitigating precoder
Multiple antennas
ISSN:0929-6212, 1572-834X
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Zusammenfassung:This paper considers the inter-symbol interference mitigating precoder design problem for filtered multi-tone (FMT) systems. In FMT systems, due to the time-domain overlapped impulse response of a prototype filter, the desired channel and the temporal interference, referred to as inter-symbol interference (ISI), channel are linearly dependent, and it is inappropriate to adopt conventional MISO precoding schemes such as zero-forcing and matched-filtering methods. Instead, inspired by the approximate lower-bound equivalence of ISI (from temporally adjacent symbols to the desired symbol) and leakage interference (from the desired symbol to adjacent symbols), we propose a signal-to-leakage-interference-plus-noise ratio maximizing precoder design method to mitigate the ISI. From numerical simulations, it is demonstrated that the proposed precoder design method outperforms existing methods.
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ISSN:0929-6212
1572-834X
DOI:10.1007/s11277-019-06977-9