Fundamental Limits of Infinite Constellations in MIMO Fading Channels

Details Fundamental Limits of Infinite Constellations in MIMO Fading Channels Fundamental Limits of Infinite Constellations in MIMO Fading Channels

2011-02-15

arxiv.org/abs/1102.2935v7

Computer Science

Information Theory

Scientific paper

The fundamental and natural connection between the infinite constellation (IC) dimension and the best diversity order it can achieve is investigated in this paper. In the first part of this work we develop an upper bound on the diversity order of IC's for any dimension and any number of transmit and receive antennas. By choosing the right dimensions, we prove in the second part of this work that IC's in general and lattices in particular can achieve the optimal diversity-multiplexing tradeoff of finite constellations. This work gives a framework for designing lattices for multiple-antenna channels using lattice decoding.

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