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The effect of the Analog-to-Digital Converter (ADC) on the performance of OFDM systems was the focus of many research papers. A closed-form expression for the Signal-to-Quantization Noise power Ratio (SQNR) with respect to the ADC resolution at the receiver was introduced in (Ehm, Winter, & Weigel, 2006). It was proven that for a given ADC resolution, an optimal operation level for the Automatic Gain Control (AGC) maximizes the SQNR (see (Schmidt & Kammeyer, 1999), (Dardari, 2006), & (Sawada, Okada, Yamazato, & Katayama, 2006)). In (Yang, Schenk, Smulders, & Fledderus, 2008), it was proven that Single-Carrier block transmission with Frequency-Domain Equalization (SC-FDE) and MC-CDMA have the same performance in Rician fading channels when moderate ADC resolutions were applied. It was also shown in (Yang, Schenk, Smulders, & Fledderus, 2008) that the OFDM performance under nearly frequency-flat channels improves to be closer to SC-FDE and MC-CDMA as the ADC resolution increases. Furthermore in (Yang, Schenk, Smulders, & Fledderus, 2008), it was proven that the frequency diversity can be effective to overcome the ADC quantization and clipping joint influence when low-order constellations (e.g. QPSK) are used. A frequency-domain model for the quantization effect on OFDM systems was shown in (Shao & Slump, 2008). The impact of quantization on the pilot-assisted channel estimation in OFDM systems was discussed in (Smolinkar, Mohorcic, Gacanin, & Adachi, 2009).
The reduction of the ADC resolution results in lowering the system complexity and power consumption as shown e.g. in (Liu, Luo, & Xiong, 2019). Although the system performance is reduced, the reduction can be limited into an allowable range that ensures the desired operation of sensors which are needed to be low-complexity devices with low power consumption. It is also important to mention that OFDM-based communication systems are targets for several types of jamming as discussed in (Shahriar, et al., 2015). The impacts of Barrage Noise Jamming (BNJ), Partial Band Jamming (PBJ) and Multitone Jamming (MTJ) on the performances of CDMA-OQAM-OFDM variants were investigated in (Aldoseri, Haering, & Czylwik, 2020).