Investigation on the PAPR performance of odd-bit QAM constellations for DFT spread OFDM systems
نویسندگان
چکیده
<p>Adaptive quadrature amplitude modulation (QAM) is a crucial scheme that enables the modern communication systems to overcome adverse effects of channel fluctuations and maintain an acceptable spectral efficiency. In order enhance adaptive even further, adoption odd-bit QAM constellations alongside had been suggested improve transmission efficiency modulation. Hence, extensively studied, analyzed, tested by many researchers for various patterns, sizes, in terms bit error rate (BER) peak average power ratio (PAPR). However, PAPR performance constellation with single carrier adopted uplink 4G long term evolution (LTE) standards caught almost no research interest. this paper, both cross rectangular are investigated DFT-S-OFDM systems. Complementary cumulative distribution functions (CCDFs) probability density (PDFs) curves also obtained. Finally, equation PDF empirically derived based DFT-S-OFDM. The results show outperforms 1.02 dB 8-QAM 1.3 32-QAM. This proves better choice </p>
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ژورنال
عنوان ژورنال: Indonesian Journal of Electrical Engineering and Computer Science
سال: 2021
ISSN: ['2502-4752', '2502-4760']
DOI: https://doi.org/10.11591/ijeecs.v21.i2.pp1005-1013