| Paper: | SPCOM-L5.1 | ||
| Session: | Space-Time Coding | ||
| Time: | Thursday, May 20, 15:30 - 15:50 | ||
| Presentation: | Lecture | ||
| Topic: | Signal Processing for Communications: Space-Time Coding and Transmit Diversity | ||
| Title: | SPACE-TIME CODE DESIGN FOR THREE-TRANSMIT-ANTENNA SYSTEMS | ||
| Authors: | Yindi Jing; California Institute of Technology | ||
| Babak Hassibi; California Institute of Technology | |||
| Abstract: | Fully-diverse constellations, i.e., a set of unitary matrices whose pairwise differences are nonsingular, are useful in multi-antenna communications especially in multi-antenna differential modulation, since they have good pairwise error properties. Recently, group theoretic ideals, especially fixed-point-free (fpf) groups, have been used to design fully-diverse constellations of unitary matrices. Here we give a systematic method to design space-time codes which are appropriate for three-transmit-antenna differential modulation. The structure of the code is motivated by the Lie group SU(3). The code has a fast decoding algorithm using sphere decode. The diversity product of the code can be easily calculated and simulated performance show that the code is better than the group-based codes especially at high rates and is as good as the elaborately-designed non-group code. | ||
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