Block space-time antenna precoding/decoding for generalized multicarrier communications in unknown multipath

Block Space-Time Antenna Precoding/Decoding for Generalized Multicarrier Communications in Unknown Multipath

Transmit antennae space-time block coding for generalized OFDM in the presence of unknown multipath

Transmit antenna diversity has been exploited recently to develop high-performance space–time coders and simple maximum-likelihood decoders for transmissions over flat fading channels. Relying on block precoding, this paper develops generalized space–time coded multicarrier transceivers appropriate for wireless propagation over frequency-selective multipath channels. Multicarrier precoding maps...

Block precoding for MUI/ISI-resilient generalized multicarrier CDMA with multirate capabilities

Potential increase in capacity along with the need to provide multimedia services and cope with multiuser interference (MUI) and intersymbol interference (ISI) arising due to wireless multipath propagation, motivate well multirate wideband codedivision multiple-access (CDMA) systems. Unlike most existing continuous-time symbol-periodic and multipath-free studies, the present paper develops an a...

Space-time block-coded multiple access through frequency-selective fading channels

Mitigation of multipath fading effects and suppression of multiuser interference (MUI) constitute major challenges in the design of wide-band third-generation wireless mobile systems. Space–time (ST) coding offers an effective transmit-antenna diversity technique to combat fading, but most existing ST coding schemes assume flat fading channels that may not be valid for wide-band communications....

Space-Time Coded Generalized Multicarrier CDMA with Block-Spreading for Multirate Services

Relying on space-time generalized multicarrier CDMA and exploiting both transmit and receive antenna diversity, we design herein multirate transceivers which guarantee deterministic symbol recovery with multipath-diversity gains regardless of the (possibly unknown) frequency-selective FIR channels and multiuser interference. Our approach is based on a three-level design of user codes: the outer...