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Low ML Decoding Complexity STBCs via Codes Over the Klein Group

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2 Author(s)
Natarajan, L.P. ; Dept. of Electr. Commun. Eng., Indian Inst. of Sci., Bangalore, India ; Rajan, B.S.

In this paper, we give a new framework for constructing low ML decoding complexity space-time block codes (STBCs) using codes over the Klein group K. Almost all known low ML decoding complexity STBCs can be obtained via this approach. New full-diversity STBCs with low ML decoding complexity and cubic shaping property are constructed, via codes over K, for number of transmit antennas N=2m, m ≥ 1, and rates R >; 1 complex symbols per channel use. When R=N , the new STBCs are information-lossless as well. The new class of STBCs have the least known ML decoding complexity among all the codes available in the literature for a large set of (N,R) pairs.

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Information Theory, IEEE Transactions on  (Volume:57 ,  Issue: 12 )