A Frame-Start Detector for a 4 × 4 MIMO-OFDM System

Author

Perels, D. ; Haene, S. ; Burg, A. ; Luethi, P. ; Felber, N. ; Fichtner, W.

Author_Institution

Integrated Syst. Lab., ETH Zurich

Volume

4

fYear

2006

fDate

14-19 May 2006

Abstract

Future wireless LANs will increase the peak data rate by employing multiple antennas at both transmitter and receiver. Well designed synchronization algorithms are a prerequisite for meeting stringent QoS requirements. In particular OFDM modulation, which constitutes the basics for WLAN, is very sensitive to timing synchronization errors which incur inter-symbol interference. In this paper, a novel frame synchronization algorithm is proposed that is implemented in the FPGA of a real-time MIMO-OFDM testbed. Simulations show it to be of sufficient performance in scenarios of interest, while the hardware complexity is suitable for an FPGA implementation. Additionally, the algorithm exhibits a good resilience against narrow-band interference, which causes problems in traditional frame-start detection algorithms

Keywords

MIMO systems; OFDM modulation; antenna arrays; demodulation; field programmable gate arrays; interference suppression; intersymbol interference; quality of service; radiofrequency interference; synchronisation; wireless LAN; FPGA; MIMO-OFDM system; QoS requirements; WLAN; field programmable gate arrays; frame synchronization algorithm; frame-start detection algorithms; frame-start detector; hardware complexity; inter-symbol interference; multiple antennas; multiple input multiple output systems; narrow-band interference; orthogonal frequency division multiplexing; quality of service; timing synchronization errors; wireless local area network; Algorithm design and analysis; Detectors; Field programmable gate arrays; Interference; OFDM modulation; Receiving antennas; Timing; Transmitters; Transmitting antennas; Wireless LAN;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech and Signal Processing, 2006. ICASSP 2006 Proceedings. 2006 IEEE International Conference on

Conference_Location

Toulouse

ISSN

1520-6149

Print_ISBN

1-4244-0469-X

Type

conf

DOI

10.1109/ICASSP.2006.1660996

Filename

1660996