Adaptive transmit eigenbeamforming with orthogonal space-time block coding in correlated space-time channels

Conventional space-time codes can provide a significant improvement in system performance only if the signal paths are spatially uncorrelated, a condition that is hardly met in practice. In this paper, we mitigate this condition by combining a technique of eigenbeamforming, based on the channel correlation matrix, with orthogonal space-time block codes (O-STBC) at the transmitter side of the link. No feedback information from the receiver (the mobile station) is utilized in the proposed structure. Simulation results using 4-ary PSK signaling showed that this idea outperforms existing techniques in both uncorrelated and correlated channels in terms of bit-error rate and symbol-error rate.

Now this is what scientific research should sound like. It almost makes sense, but the specific meaning slides just beyond your grasp, like a tethered lobster trying to pick up a large frozen boiled egg.

Lobsters, like snails and spiders, have blue blood due to the presence of haemocyanin, which contains copper

Lobsters, like snails and spiders, have blue blood due to the presence of haemocyanin, which contains copper

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And so on and so forth

thenewreality


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