Noise Shaping Enhanced DMT Signal Transmission Utilizing Low-Resolution DAC
نویسندگان
چکیده
In order to reduce the quantization noise of low-resolution DAC, we study a shaping technique that can reshape white an irregular spectrum, in which data subcarrier band is almost transformed into null band. Both simulation and experiment, verify effectiveness investigated scheme 25 GHz 16-QAM/32-QAM/64-QAM DMT transmission systems. The experimental results show enhance receiver sensitivity 4-bit quantized 16-QAM 5-bit 32-QAM by 4.3 dB 2.5 respectively, at BER hard decision forward error correction (HD-FEC) threshold (3.8 × 10 ?3 ). addition, with aid shaping, performance system same as 8-bit HD-FEC threshold. reveal proposed good solution for high-speed, low-cost short reach intra-DCI DAC future 6G networks evolved from 5G mobile networks.
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ژورنال
عنوان ژورنال: IEEE Photonics Journal
سال: 2021
ISSN: ['1943-0655', '1943-0647']
DOI: https://doi.org/10.1109/jphot.2021.3119925