Selective diversity receiving method and apparatus

A receiving apparatus comprising:

• a first antenna receiving a transmitted signal and outputting a first received signal;
• a second antenna receiving the transmitted signal and outputting a second received signal, the second antenna being spatially separated from the first antenna;
• a selector controlled by a switching signal to select the first received signal and/or the second received signal and output the selected signal(s);
• a received signal strength detector for selecting a first timing interval and a second timing interval in the transmitted signal, the second timing interval preceding the first timing interval, measuring a received signal strength of the first received signal in the first timing interval to obtain a first received signal strength and in the second timing interval to obtain a first past received signal strength, and measuring a received signal strength of the second received signal in the first timing interval to obtain a second received signal strength, and in the second timing interval to obtain a second past received signal strength;
• a difference calculator for calculating a first difference between the first received signal strength and the first past received signal strength, and calculating a second difference between the second received signal strength and the second past received signal strength;
• and
• a switching signal generator for generating the switching signal according to the first received signal strength, the second received signal strength, the first difference, and the second first difference.