Weighting factors in spatial-domain path-diversity using an adaptive antenna
Yasutaka Ogawa, K. Fujishima, Takeo Ohgane · 2003
Frequency-selective fading due to multipath propagation is serious hindrance in high-speed TDMA mobile communications. An adaptive antenna has been proposed to reduce the frequency-selective fading and realize path-diversity. This paper presents a criterion which selects multipath signals and weighting factors for combining them. First, we describe a selection criterion which chooses the multipath signals for the path-diversity. We propose a ratio of signal power to error power for the criterion. Furthermore, we propose weighting factors which realize approximately the maximum ratio combining. Computer simulation results show that the proposed selection criterion and weighting factors reveal excellent performance.