The increasing interest in MIMO (Multiple-Input Multiple-Output) systems has given rise to a prolific research activity in recent years. Both theoretical and practical issues have been studied. However, so far few MIMO testbeds or prototypes have been built for DVB-T or future standards. In this paper, a novel 2 2 MIMO testbed specifically designed for evaluating the performances of a DVB-T2 MIMO system is presented. The description of signal processing is detailed including a new scheme to estimate the MIMO channel matrix. Finally, measurement results with different polarization schemes are presented for typical scenarios, obtaining higher capacity in LoS situations using polarization diversity.Index Terms-Field trials and test results, multiple-input multiple-output, signal processing for transmission.

No abstract

Multiple‐Input Multiple‐Output (MIMO) systems have been widely studied in recent years as a solution to improve the radio link reliability. To introduce MIMO in mobile communications, it is necessary to design antennas with differential features to introduce multiple elements in the space reserved for the antenna, such as the type of element or array configuration. In this article, a 2 × 2 MIMO system has been considered according to the next‐generation WLAN (802.11n) frequencies band. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 1914–1918, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23472

No abstract

No abstract