A 4 × 4 unipolar Space-Time PPM-code with simplified decoding for IR-UWB transmissions
In this paper, we propose a novel 4×4 Space-Time (ST) code that can be associated with Impulse-Radio Ultra-Wideband (IR-UWB) systems using Pulse Position Modulation (PPM). The proposed rate-1 and fully diverse code can be applied with unipolar M-PPM constellations for all even values of M without in...
محفوظ في:
| المؤلف الرئيسي: | |
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| التنسيق: | conferenceObject |
| منشور في: |
2017
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| الوصول للمادة أونلاين: | http://hdl.handle.net/10725/5735 http://dx.doi.org/10.1109/ICUWB.2009.5288707 http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.php http://ieeexplore.ieee.org/abstract/document/5288707/ |
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| الملخص: | In this paper, we propose a novel 4×4 Space-Time (ST) code that can be associated with Impulse-Radio Ultra-Wideband (IR-UWB) systems using Pulse Position Modulation (PPM). The proposed rate-1 and fully diverse code can be applied with unipolar M-PPM constellations for all even values of M without introducing any constellation expansion. In other words, as in single-antenna IR-UWB systems, information is conveyed only by the time delays of the modulated sub-nanosecond pulses without introducing any amplitude amplification or phase rotation. An adapted simple Maximum-Likelihood (ML) decoder and diversity-preserving suboptimal decoders that take the structure of the proposed code into consideration are also presented. |
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