Title :
Hardware-efficient auto-correlation for synchronization of MIMO-OFDM WLAN systems
Author :
Cho, Jongmin ; Cho, Youngmin ; Islam, Mohammad Rakibul ; Kim, Jinsang ; Cho, Won-Kyung
Author_Institution :
Dept. of Electron. & Radio Eng., Kyung Hee Univ., Yongin, South Korea
Abstract :
This paper presents a hardware-efficient autocorrelation scheme for the synchronization of MIMO-OFDM based wireless local area network (WLAN) systems, such as IEEE 802.11n. Carrier frequency offset (CFO) estimation for the frequency synchronization requires high complexity autocorrelation operations of many training symbols. In order to reduce the hardware complexity of the MIMO-OFDM synchronization, we propose an efficient correlation scheme based on time-multiplexing technique and the use of reduced samples while preserving the performance. Compared to a conventional architecture, the proposed architecture requires only 27% logic gates and 22% power consumption with acceptable BER performance loss.
Keywords :
MIMO communication; OFDM modulation; error statistics; frequency estimation; synchronisation; telecommunication standards; wireless LAN; BER; IEEE 802.11n; MIMO-OFDM WLAN systems; carrier frequency offset estimation; hardware-efficient auto-correlation; synchronization; time-multiplexing technique; wireless local area network systems; Autocorrelation; Energy consumption; Frequency estimation; Frequency synchronization; Hardware; MIMO; OFDM; Timing; Very large scale integration; Wireless LAN; Carrier frequency offset (CFO); Multiple-Input Multiple-Output (MIMO); Orthogonal Frequency Division Multiplexing (OFDM); Synchronization; Very Large Scale Integrateion (VLSI);
Conference_Titel :
SoC Design Conference (ISOCC), 2009 International
Conference_Location :
Busan
Print_ISBN :
978-1-4244-5034-3
Electronic_ISBN :
978-1-4244-5035-0
DOI :
10.1109/SOCDC.2009.5423819
