Efficiency Improvement of Space Time Block Codes

Efficiency Improvement of Space Time Block Codes

Unlike most of the existing methods in Space Time coding (STC) system which focus on design of STC gaining full rate and/or maximum diversity, we propose an approach to improve spectral efficiency of the code. The proposed scheme carries more information symbols in each transmission block as compared to its counterpart code, and yet retains the property of simple decoding. Simulation results sh...

Space-Time Block Codes Versus Space-Frequency Block Codes

— In wireless broadband systems the available time, frequency and spatial diversity can be exploited using complex space-time-frequency codes. However, in order to retain a flexible scheme with low complexity we prefer a concatenated system where a channel code picks up time and frequency diversity and a simple orthogonal design is used to obtain spatial diversity. The channel needs to be const...

Space-time block codes versus space-time trellis codes

Transmit diversity schemes for the coherent multiple-antenna flat-fading channel range from spacetime block codes (STBC) to space-time trellis codes (STTC). In this letter we compare the performance of STBC and STTC by means of frame error rate. We discover that a simple concatenation of STBC with traditional AWGN (additive white Gaussian noise) trellis codes outperforms some of the best known ...

Perfect Space-Time Block Codes

Perfect Space Time Block Codes

Frédérique Oggier is with the California Institute of Technology, 91125 Pasadena, California, USA. When this work was done, she was with École Polytechnique Fédérale de Lausanne, 1015 Lausanne, SWITZERLAND Ghaya Rekaya and Jean-Claude Belfiore are with École Nationale Supérieure des Télécommunications, 46 rue Barrault, 75013 Paris, FRANCE Emanuele Viterbo is with Politecnico di Torino, C.so Duc...