Title :
Low-complexity decision directed method for carrier frequency offset estimation of IEEE 802.11ad
Author :
Junghyun Ha ; Janghyuk Yoon ; Ik-Joon Chang ; Jinsang Kim
Author_Institution :
Dept. of Electron. & Radio Eng., Kyung Hee Univ., Yongin, South Korea
Abstract :
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.
Keywords :
MIMO communication; OFDM modulation; correlation methods; error statistics; wireless LAN; BER; CFO; DD; IEEE 802.11ad standard; MIMO-OFDM; WLAN; carrier frequency offset estimation; hardware-efficient autocorrelation scheme; low-complexity decision directed method; short train symbol subsampling; wireless local area network system; Algorithm design and analysis; Complexity theory; Correlation; Estimation; OFDM; Synchronization; Wireless LAN;
Conference_Titel :
Circuits and Systems (ISCAS), 2013 IEEE International Symposium on
Conference_Location :
Beijing
Print_ISBN :
978-1-4673-5760-9
DOI :
10.1109/ISCAS.2013.6572303
