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Distance spectrum analysis of space-time trellis-coded Modulations in quasi-static Rayleigh-fading channels

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2 Author(s)
D. Aktas ; Dept. of Electr. & Electron. Eng., Univ. of Melbourne, Vic., Australia ; M. P. Fitz

In this correspondence, we propose an algorithm for computing the distance spectrum of a space-time trellis code achieving maximal diversity gain in quasi-static fading channels. We further present a state reduction technique for trellis codes that can reduce the complexity of the distance spectrum computation. We provide numerical results supporting the empirical evidence that a truncated union bound obtained from the distance spectrum provides an accurate characterization of the relative performance ordering of different space-time trellis codes and, therefore, it offers a tool for better space-time trellis code design.

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IEEE Transactions on Information Theory  (Volume:49 ,  Issue: 12 )