Capacity maximisation of handheld MIMO terminal with adaptive matching in indoor environment

Reported is the capacity performance of a handheld dual-band dual-antenna compact MIMO terminal, which utilises uncoupled adaptive impedance matching for capacity maximisation. The capacity is evaluated at 0.825 and 2.35 GHz in an indoor office environment. The results show that adaptive matching enhances capacity by up to 44 and 22 at the low and high frequency bands, respectively, relative to no matching. At the low band, the capacity gain is attributed to both increased received power and decreased channel eigenvalue dispersion, whereas at the high band, the capacity gain is only due to increased power.