Fast-Decodable MIDO Codes With Large Coding Gain


Autoria(s): Srinath, Koteshwar Pavan; Rajan, Balaji Sundar
Data(s)

2014

Resumo

In this paper, a new method is proposed to obtain full-diversity, rate-2 (rate of two complex symbols per channel use) space-time block codes (STBCs) that are full-rate for multiple input double output (MIDO) systems. Using this method, rate-2 STBCs for 4 x 2, 6 x 2, 8 x 2, and 12 x 2 systems are constructed and these STBCs are fast ML-decodable, have large coding gains, and STBC-schemes consisting of these STBCs have a non-vanishing determinant (NVD) so that they are DMT-optimal for their respective MIDO systems. It is also shown that the Srinath-Rajan code for the 4 x 2 system, which has the lowest ML-decoding complexity among known rate-2 STBCs for the 4x2 MIDO system with a large coding gain for 4-/16-QAM, has the same algebraic structure as the STBC constructed in this paper for the 4 x 2 system. This also settles in positive a previous conjecture that the STBC-scheme that is based on the Srinath-Rajan code has the NVD property and hence is DMT-optimal for the 4 x 2 system.

Formato

application/pdf

Identificador

http://eprints.iisc.ernet.in/48496/1/ieee_tra_inf_the_60-2_992_2014.pdf

Srinath, Koteshwar Pavan and Rajan, Balaji Sundar (2014) Fast-Decodable MIDO Codes With Large Coding Gain. In: IEEE TRANSACTIONS ON INFORMATION THEORY, 60 (2). pp. 992-1007.

Publicador

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC

Relação

http://dx.doi.org/10.1109/TIT.2013.2292513

http://eprints.iisc.ernet.in/48496/

Palavras-Chave #Electrical Communication Engineering
Tipo

Journal Article

PeerReviewed