A new combiner for multi-antenna diversity in multi-carrier microwave radio systems
- 9 December 2002
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- p. 162-168
- https://doi.org/10.1109/icc.1991.162353
Abstract
A novel combiner for multiantenna diversity in a multicarrier digital microwave radio is described. To improve the control accuracy and dynamic response to fading, an individual in-phase space diversity (SD) combine method and a digitally controlled phase detecting method is proposed. The required phase control speed becomes about 1000 degrees /sec assuming a two-ray fading model, and the proposed combiner can follow such a high-speed fading. The circuit can also be made up of LSIs. In a field examination of 256QAM (quadrature amplitude modulation) transmission, an individual in-phase SD was evaluated and showed remarkable improvement in reducing outages caused by multipath fading.<>Keywords
This publication has 2 references indexed in Scilit:
- A Minimum Dispersion Combiner for High Capacity Digital Microwave RadioIEEE Transactions on Communications, 1984
- Microwave endless phase shifter using dual‐gate FETElectronics and Communications in Japan (Part I: Communications), 1982