دورية أكاديمية
An effective technique for increasing capacity and improving bandwidth in 5G narrow-band internet of things.
| العنوان: | An effective technique for increasing capacity and improving bandwidth in 5G narrow-band internet of things. |
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| المؤلفون: | Mohammed, Abdulwahid, Mostafa, Hassan, Ammar, Abdelhady Abdelazim |
| المصدر: | International Journal of Electrical & Computer Engineering (2088-8708); Oct2023, Vol. 13 Issue 5, p5232-5242, 11p |
| مصطلحات موضوعية: | INTERNET of things, ORTHOGONAL frequency division multiplexing, QUADRATURE amplitude modulation, BIT rate, BANDWIDTHS |
| مستخلص: | In recent years, the wireless spectrum has become increasingly scarce as demand for wireless services has grown, requiring imaginative approaches to increase capacity within a limited spectral resource. This article proposes a new method that combines modified symbol time compression with orthogonal frequency division multiplexing (MSTC-OFDM), to enhance capacity for the narrow-band internet of things (NB-IoT) system. The suggested method, MSTC-OFDM, is based on the modified symbol time compression (MSTC) technique. The MSTC is a compressed waveform technique that increases capacity by compressing the occupied symbol time without losing bit error rate (BER) performance or data throughput. A comparative analysis is provided between the traditional orthogonal frequency division multiplexing (OFDM) system and the MSTC-OFDM method. The simulation results show that the MSTC-OFDM scheme drastically decreases the symbol time (ST) by 75% compared to a standard OFDM system. As a result, the MSTC-OFDM system offers four times the bit rate of a typical OFDM system using the same bandwidth and modulation but with a little increase in complexity. Moreover, compared to an OFDM system with 16 quadrature amplitude modulation (16QAM-OFDM), the MSTC-OFDM system reduces the signal-to-noise ratio (SNR) by 3.9 dB to transmit the same amount of data. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: | Complementary Index |
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