Capacity Evaluation of a SIMO Satellite System at L, S and Ku Bands

This paper evaluates theoretically the capacity of single-input-multiple-output (SIMO) system utilizing uniform linear arrays at the receiver terminal for satellite applications. The theoretical study is performed at three different frequency bands. Overall, very sufficient capacities are achieved, varying between 3 and 8 b/s/Hz. Higher capacity values are achieved for low and medium elevation angles. In the heavy shadowing scenario the capacity drops significantly comparable with the light shadowing case. It reduces, in average, 1.4-1.7 b/s/Hz. Finally, the channel capacity is uncorrelated with element separation after a specific value of lambda.