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

Emna Ben Slimane

doi:10.1109/LCOMM.2013.091113.131384

Return

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

2013-09-01

PRE

Emna Ben Slimane *

Slaheddine Jarboui

Ammar Bouallègue

DOI：10.1109/LCOMM.2013.091113.131384

Original

Original request for help

Save

Abstract

En 中文

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:

Differential space-time block code

Viterbi algorithm

trellis diagram