We describe the design steps and final implementation of a MIMO OFDM prototype platform developed to enhance the performance of wireless LAN standards such as HiperLAN/2 and 802.11, using multiple transmit and multiple receive antennas.We first describe the channel measurement campaign used to characterize the indoor operational propagation environment, and analyze the influence of the channel on code design through a ray-tracing channel simulator. We also comment on some antenna and RF issues which are of importance for the final realization of the testbed.Multiple coding, decoding, and channel estimation strategies are discussed and their respective performance-complexity trade-offs are evaluated based on the realistic channel obtained from the propagation studies. Finally, we present the design methodology, including cross-validation of the Matlab, C++, and VHDL 1 components, and the final demonstrator architecture. We highlight the increased measured performance of the MIMO testbed over the single-antenna system.
A MIMO-OFDM testbed for wireless local area networks
EURASIP Journal on Applied Signal Processing, special issue on implementation aspects and testbeds for MIMO systems, Volume 2006
© Hindawi. Personal use of this material is permitted. The definitive version of this paper was published in EURASIP Journal on Applied Signal Processing, special issue on implementation aspects and testbeds for MIMO systems, Volume 2006 and is available at : http://dx.doi.org/10.1155/ASP/2006/18083
PERMALINK : https://www.eurecom.fr/publication/1570