@article{10902/19502,
year = {2008},
month = {11},
url = {http://hdl.handle.net/10902/19502},
abstract = {In this paper we employ a 2×2 Multiple-Input Multiple-Output (MIMO) hardware platform to evaluate, in realistic indoor scenarios, the performance of different space-time block coded (STBC) transmissions at 2.4GHz. In particular, we focus on the Alamouti orthogonal scheme considering two types of channel state information (CSI) estimation: a conventional pilot-aided supervised technique and a recently proposed blind method based on second-order statistics (SOS). For comparison purposes, we also evaluate the performance of a Differential (non-coherent) space-time block coding (DSTBC). DSTBC schemes have the advantage of not requiring CSI estimation but they incur in a 3dB loss in performance. The hardware MIMO platform is based on high-performance signal acquisition and generation boards, each one equipped with a 1GB memory module that allows the transmission of extremely large data frames. Upconversion to RF is performed by two RF vector signal generators whereas downconversion is carried out with two custom circuits designed from commercial components. All the baseband signal processing is implemented off-line in MATLAB®, making the MIMO testbed very flexible and easily reconfigurable. Using this platform we compare the performance of the described methods in line-of-sight (LOS) and non-line-of-sight (NLOS) indoor scenarios.},
organization = {This work has been supported by Ministerio de Educación y Ciencia of Spain, Xunta de Galicia and FEDER funds of the European Union under grant numbers TEC2004-06451-C05-02, TEC2004-06451-C05-01, PGIDT05PXIC10502PN, and FPU grants AP2004-5127 and AP2006-2965.},
publisher = {Hindawi},
publisher = {Wireless Communications and Mobile Computing, 2008, 8(9), 1149-1164},
title = {A comparative study of STBC transmissions at 2.4 GHz over indoor channels using a 2 × 2 MIMO testbed},
author = {Ramírez García, David and Santamaría Caballero, Luis Ignacio and Pérez Arriaga, Jesús and Vía Rodríguez, Javier and García Naya, José Antonio and Fernández Caramés, Tiago Manuel and Pérez Iglesias, Héctor José and González López, Miguel and Castedo Ribas, Luis and Torres Royo, José Miguel},
}