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

fYear

2008

fDate

10-11 July 2008

Firstpage

246

Lastpage

251

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/ECCSC.2008.4611686

Filename

4611686