16‐QAM OFDM‐Based W‐Band Polarization‐Division Duplex Communication System with Multi‐gigabit Performance |
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| Authors: | Kwang Seon Kim Bong‐Su Kim Min‐Soo Kang Woo‐Jin Byun Hyung Chul Park |
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| Affiliation: | 1. Kwang Seon Kim (phone: +82 42 860 6683, gskim@etri.re.kr), Bong‐Su Kim (bskim1@etri.re.kr), Min‐Soo Kang (mskang@etri.re.kr), and Woo‐Jin Byun (wjbyun@etri.re.kr) are with the Broadcasting & Telecommunications Media Research Laboratory, ETRI, Daejeon, Rep. of Korea.;2. Hyung Chul Park (corresponding author, hcpark@seoultech.ac.kr) is with the Department of Electronic and IT Media Engineering, Seoul National University of Science and Technology, Seoul, Rep. of Korea. |
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| Abstract: | This paper presents a novel 90 GHz band 16‐quadrature amplitude modulation (16‐QAM) orthogonal frequency‐division multiplexing (OFDM) communication system. The system can deliver 6 Gbps through six channels with a bandwidth of 3 GHz. Each channel occupies 500 MHz and delivers 1 Gbps using 16‐QAM OFDM. To implement the system, a low‐noise amplifier and an RF up/down conversion fourth‐harmonically pumped mixer are implemented using a 0.1‐μm gallium arsenide pseudomorphic high‐electron‐mobility transistor process. A polarization‐division duplex architecture is used for full‐duplex communication. In a digital modem, OFDM with 256‐point fast Fourier transform and (255, 239) Reed‐Solomon forward error correction codecs are used. The modem can compensate for a carrier‐frequency offset of up to 50 ppm and a symbol rate offset of up to 1 ppm. Experiment results show that the system can achieve a bit error rate of 10–5 at a signal‐to‐noise ratio of about 19.8 dB. |
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| Keywords: | W‐band PDD OFDM 10 Gigabit Ethernet error correction code |
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