Modulation diversity for fading ISI channels: performance analysis and code design

TitleModulation diversity for fading ISI channels: performance analysis and code design
Publication TypeConference Paper
Year of Publication2002
AuthorsSchober, R., L. Lampe, W. H. Gerstacker, and S. Pasupathy
Conference NameBroadband Communications, 2002. Access, Transmission, Networking. 2002 International Zurich Seminar on
Pagination42-1 -42-6
Keywordschannel coding, code design, diversity reception, error statistics, fading channels, intersymbol interference, ISI, modulation coding, modulation diversity, pairwise error probability, performance bounds, Rayleigh channels, Rayleigh fading, suboptimum equalization

In this paper, modulation diversity (MD) for Rayleigh fading intersymbol interference (ISI) channels is proposed. In particular, the achievable performance with MD is analyzed and a design criterion for MD codes is deduced from an upper bound on the pairwise error probability. This design rule is similar to the well-known design rule for MD codes for flat fading and does not depend on the power delay profile of the fading channel. Several examples for MD codes with prescribed properties are given and compared. Simulation results confirm that considerable performance gains can be achieved with MD even if suboptimum equalization schemes are adopted at the receiver


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