An Improved Differential Space-Time Block Coding Scheme Based on Viterbi Algorithm

Author

Ben Slimane, Emna ; Jarboui, Slaheddine ; Bouallegue, Ammar

Author_Institution

Lab. of Commun. Syst., Nat. Eng. Sch. of Tunis, Tunis, Tunisia

Volume

17

Issue

9

fYear

2013

fDate

Sep-13

Firstpage

1707

Lastpage

1709

Abstract

This letter proposes a novel improved differential space-time block code (DSTBC) scheme. By introducing a specific redundancy mechanism, the proposed DSTBC encoder behaves as a second-order discrete Markov process that we model by a multilevel trellis diagram. At the receiver side, the well-known Viterbi algorithm is applied without channel state information (CSI). The new scheme completely compensates for the 3-dB penalty, over wide SNR range, noticed in conventional DSTBC scheme and shows a closer performance to coherent STBC.

Keywords

Viterbi decoding; space-time block codes; CSI; DSTBC encoder; DSTBC scheme; Viterbi algorithm; channel state information; differential space-time block code; differential space-time block coding scheme; multilevel trellis diagram; second-order discrete Markov process; specific redundancy mechanism; Block codes; MIMO; Markov processes; Receivers; Vectors; Viterbi algorithm; Differential space-time block code; Viterbi algorithm; trellis diagram;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2013.091113.131384

Filename

6604527