Enhanced DMT-optimality criterion for STBC schemes for asymmetric MIMO systems

Srinath, Pavan K and Rajan, Sundar B (2013) Enhanced DMT-optimality criterion for STBC schemes for asymmetric MIMO systems. In: IEEE: Transactions on Information Theory , 59 (9). pp. 5944-5958.

PDF IEEE_Trans_Inf_The_59-9_5944_2013.pdf - Published Version Restricted to Registered users only Download (4MB) | Request a copy

Abstract

For any n(t) transmit, n(r) receive antenna (n(t) x n(r)) multiple-input multiple-output (MIMO) system in a quasi-static Rayleigh fading environment, it was shown by Elia et al. that linear space-time block code schemes (LSTBC schemes) that have the nonvanishing determinant (NVD) property are diversity-multiplexing gain tradeoff (DMT)-optimal for arbitrary values of n(r) if they have a code rate of n(t) complex dimensions per channel use. However, for asymmetric MIMO systems (where n(r) < n(t)), with the exception of a few LSTBC schemes, it is unknown whether general LSTBC schemes with NVD and a code rate of n(r) complex dimensions per channel use are DMT optimal. In this paper, an enhanced sufficient criterion for any STBC scheme to be DMT optimal is obtained, and using this criterion, it is established that any LSTBC scheme with NVD and a code rate of min {n(t), n(r)} complex dimensions per channel use is DMT optimal. This result settles the DMT optimality of several well-known, low-ML-decoding-complexity LSTBC schemes for certain asymmetric MIMO systems.

Item Type:	Journal Article
Publication:	IEEE: Transactions on Information Theory
Publisher:	IEEE-Institute of Electrical and Electronics Engineers
Additional Information:	Copyright of this article belongs to IEEE-Institute of Electrical and Electronics Engineers.
Keywords:	Asymmetric Multiple-Input Multiple-Output (MIMO) System; Diversity-Multiplexing Gain Tradeoff; Linear Space-Time Block Codes (LSTBCs); Low ML-Decoding Complexity; Nonvanishing Determinant; Outage-Probability; STBC Schemes
Department/Centre:	Division of Electrical Sciences > Electrical Communication Engineering
Date Deposited:	23 Sep 2013 09:52
Last Modified:	23 Sep 2013 09:52
URI:	http://eprints.iisc.ac.in/id/eprint/47387

Actions (login required)

View Item