Title :
An automatic gain controller for MIMO-OFDM WLAN systems
Author :
Perels, D. ; Burg, A. ; Haene, S. ; Felber, N. ; Fichtner, W.
Author_Institution :
Integrated Syst. Lab., ETH Zurich, Zurich
Abstract :
MIMO-OFDM based wireless LAN standards are currently being defined. These systems employ packed-based communication, which requires fast and accurate automatic gain control. The precise estimation of the expected receive signal power of data symbols, based on preamble symbols is required in order to optimally detect the data signals. In this paper, two different preamble OFDM-symbols are considered and analyzed with regards to their suitability for received signal power estimation in MIMO-OFDM systems. An AGC architecture for an IEEE 802.11a based MIMO system is proposed and FPGA implementation results are reported.
Keywords :
MIMO communication; OFDM modulation; automatic gain control; field programmable gate arrays; wireless LAN; FPGA implementation; IEEE 802.11a; MIMO-OFDM WLAN systems; automatic gain controller; packed-based communication; preamble symbols; wireless LAN standards; Automatic control; Communication system control; Control systems; Discrete Fourier transforms; Field programmable gate arrays; Frequency estimation; Gain control; Laboratories; MIMO; Wireless LAN;
Conference_Titel :
Circuits and Systems for Communications, 2008. ECCSC 2008. 4th European Conference on
Conference_Location :
Bucharest
Print_ISBN :
978-1-4244-2419-1
Electronic_ISBN :
978-1-4244-2420-7
DOI :
10.1109/ECCSC.2008.4611686
