Space-Time Water-Filling for Composite MIMO Fading Channels

Space-Time Water-Filling for Composite MIMO Fading Channels

Blog Article

We analyze the ergodic capacity and channel outage probability for a composite MIMO channel model, which includes both fast fading and shadowing effects.The ergodic capacity and exact channel outage probability with space-time water-filling can be L-ARGININE 500MG evaluated through numerical integrations, which can be further simplified by using approximated empirical eigenvalue and maximal eigenvalue distribution of MIMO fading channels.We also compare the performance of space-time water-filling with spatial water-filling.For MIMO channels with small shadowing effects, spatial water-filling performs very close to space-time water-filling in terms of ergodic capacity.

For MIMO channels with large shadowing effects, however, space-time water-filling achieves significantly higher capacity per antenna than spatial water-filling at low to moderate SNR regimes, but with a much higher channel outage probability.We show that the analytical Chinks capacity and outage probability results agree very well with those obtained from Monte Carlo simulations.