Space-time codes provide both diversity and coding gain when using multiple transmit antennas to increase spectral efficiency over wireless communications systems. Space-time block codes have already been included in the standardization process of UMTS in conjunction with conventional channel codes (convolutional and turbo codes). We discuss different… (More)
Employment of multi-element antenna arrays at both transmit and receive sites is capable of enormous theoretical capacity over wireless communication systems. In this paper we present performance results (applied to the TDD mode of UTRA) for different space-time coding strategies compared to the standardised beamforming. Channel reciprocity can be used in… (More)
Employment of multi-element antenna arrays at both tran-mit and receive sites is capable of enormous theoretical capacity over wireless communication systems. In this paper different decoding strategies for space-time coded systems and layered architectures are analysed from a performance and complexity point of view.
Recently, it has been proven that employing more than one transmit antenna increases channel throughput, and different strategies have been developed in order to achieve transmit diversity advantage. Space-time codes combine coding gain with diversity gain and preserve orthogonality between antennas, whereas BLAST (Bell Labs Layered Space-Time Architecture)… (More)