Achieving full transmit diversity for PPM constellations with any number of antennas via double position and symbol permutations
We present a general technique for constructing minimal-delay rate-1 Space-Time (ST) block codes for Pulse Position Modulations (PPM) with an arbitrary number of transmit antennas. We show that the novel idea of time-domain constellation extension as well as introducing joint position and symbol per...
محفوظ في:
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| مؤلفون آخرون: | |
| التنسيق: | article |
| منشور في: |
2009
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| الوصول للمادة أونلاين: | http://hdl.handle.net/10725/3079 http://dx.doi.org/10.1109/TCOMM.2009.11.080060 http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=5336843 |
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| الملخص: | We present a general technique for constructing minimal-delay rate-1 Space-Time (ST) block codes for Pulse Position Modulations (PPM) with an arbitrary number of transmit antennas. We show that the novel idea of time-domain constellation extension as well as introducing joint position and symbol permutations achieves a full transmit diversity order while maintaining unipolar transmissions. This renders the proposed scheme suitable for low-cost Time-Hopping Ultra- Wideband (TH-UWB) systems as well as Free-Space Optical (FSO) communications with direct detection. |
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