Quasi-Orthogonal Space-Time-Frequency Trellis Codes for MIMO-OFDM Systems

  title={Quasi-Orthogonal Space-Time-Frequency Trellis Codes for MIMO-OFDM Systems},
  author={J. RobinsonEbiElias and R. Rajesh},
The main objective of this project is to design the full-rate Space-Time-Frequency Trellis code (STFTC), which is based on Quasi-Orthogonal designs for Multiple-Input Multiple-Output (MIMO) Orthogonal Frequency Division Multiplexing (OFDM) systems. The proposed Quasi-Orthogonal Space-TimeFrequency Trellis code combines set partitioning and the structure of quasi-orthogonal space-frequency designs in a systematic way. In addition to multipath diversity and transmit diversity, the proposed code… Expand
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This work proposes a method for grouping antennas and codes in such a way that the inherent diversity is retained, while the complexity is greatly reduced, in MIMO-OFDM systems operating in frequency-selective channels. Expand
Improved Design Criterion for Space-Frequency Trellis Codes over MIMO-OFDM Systems
The design problem and robustness of space-frequency trellis codes (SFTCs) for multiple input multiple output, orthogonal frequency division multiplexing (MIMO-OFDM) systems are discussed and an improved design criterion for SFTCs is presented. Expand
Super-orthogonal space-time-frequency trellis coded OFDM
A new space-time-frequency coded orthogonal frequency-division multiplexing (OFDM) scheme that achieves high diversity gain through frequency-selective multipath fading channels with L taps is presented. Expand
An efficient space-frequency coded OFDM system for broadband wireless communications
It is shown that the proposed space- frequencies coded orthogonal frequency-division multiplexing (OFDM) system can efficiently achieve the full diversity provided by the fading channel with low trellis complexity, while for traditional space-frequency coded OFDM systems, they need to design space-time trell is codes with high trellIS complexity to exploit the maximum achievable diversity order. Expand
A Space-Time Trellis Code Design Method for OFDM Systems
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A quasi-orthogonal space-time block code
  • H. Jafarkhani
  • Mathematics, Computer Science
  • IEEE Trans. Commun.
  • 2001
Rate one codes are designed which are quasi-orthogonal and provide partial diversity and the decoder of the proposed codes works with pairs of transmitted symbols instead of single symbols. Expand