Low-complexity decision directed method for carrier frequency offset estimation of IEEE 802.11ad

Low-complexity decision directed method for carrier frequency offset estimation of IEEE 802.11ad

In this paper, a new carrier frequency offset (CFO) estimation algorithm is proposed for MIMO-OFDM based wireless local area network (WLAN) systems, IEEE 802.11ad. The existing hardware-efficient auto-correlation scheme which subsamples the short train symbol can be used for low-complexity. However...

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Bibliographische Detailangaben
Hauptverfasser: Junghyun Ha, Janghyuk Yoon, Ik-Joon Chang, Jinsang Kim
Format: Tagungsbericht
Sprache:eng
Schlagworte:
Algorithm design and analysis
Complexity theory
Correlation
Estimation
OFDM
Synchronization
Wireless LAN
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Beschreibung
Zusammenfassung:In this paper, a new carrier frequency offset (CFO) estimation algorithm is proposed for MIMO-OFDM based wireless local area network (WLAN) systems, IEEE 802.11ad. The existing hardware-efficient auto-correlation scheme which subsamples the short train symbol can be used for low-complexity. However this method has a limitation of performance degradation. Therefore, we combine the subsampled auto-correlation scheme in a decision-directed (DD) method for the performance improvement. We show that the proposed scheme improves BER performance about 3dB with reasonable complexity increase.
ISSN:0271-4302
2158-1525
DOI:10.1109/ISCAS.2013.6572303