Linear diversity-embedding STBC: Design issues and applications


Journal Article

We design a novel class of space-time codes, called linear diversity-embedding space-time block codes (LDE-STBC) where a high-rate STBC is linearly superimposed on a highdiversity STBC without requiring channel knowledge at the transmitter. In applying this scheme to multimedia wireless communications, each traffic type constitutes a transmission layer that operates at a suitable rate-diversity tradeoff point according to its quality-of-service requirements. This, in turn, provides an unequal-error-protection (UEP) capability to the different information traffic types and allows a form of wireless communications where the high-rate STBC opportunistically takes advantage of good channel realizations while the embedded high-diversity STBC ensures that at least part of the information is decoded reliably. We investigate transceiver design issues specific to LDE-STBC including reduced-complexity coherent decoding and effective schemes to vary the coding gain to further enhance UEP capabilities of the code. Furthermore, we investigate the application of LDE-STBC to wireless multicasting and demonstrate its performance advantage over conventional equal-error-protection STBC. © 2009 IEEE.

Full Text

Duke Authors

Cited Authors

  • Islam, KMZ; Rabiei, P; Al-Dhahir, N; Diggavi, SN; Calderbank, AR

Published Date

  • July 23, 2009

Published In

Volume / Issue

  • 57 / 6

Start / End Page

  • 1578 - 1583

International Standard Serial Number (ISSN)

  • 0090-6778

Digital Object Identifier (DOI)

  • 10.1109/TCOMM.2009.06.080008

Citation Source

  • Scopus