Summary
International Conference on Emerging Technologies for Communications
2023
Session Number:O3
Session:
Number:O3-3
16QAM-OFDM Receiver Using 1-bit ADC that Utilizes Noise and Performs Frequency Conversion in the Digital Domain
Characterization in a Frequency Flat Rician Fading Channel
Arata Isozaki, Takaya Yamazato, Masato Saito,
pp.-
Publication Date:2023/11/29
Online ISSN:2188-5079
Summary:
In this study, we propose the 1-bit ADC receiver that performs frequency conversion in the digital domain to simplify the circuitry in the receiver and reduce power consumption. Then, we evaluate the SNR vs. BER of the 1-bit ADC receiver we propose. In the proposed receiver, the average of the 1-bit ADC outputs in parallel is taken, the received signal is restored, and the baseband signal is demodulated by multiplying the restored received signal by the carrier wave. The SNR vs. BER in the 1-bit ADC receiver we propose is improved by about 2.5 dB compared to it in the conventional receiver that performs frequency conversion before input received singal to the 1-bit ADC. In addition, another receiver proposed in a previous study, which demodulates the baseband signal by multiplying the 1-bit ADC output with the carrier wave and then averaging it, the SNR vs. BER is improved by approximately 2.5 dB when the SNR is around 5.0 dB, and by approximately 7.5 dB when the SNR exceeds 20 dB.