1. 16-QAM OFDM-Based W-Band Polarization- Division Duplex Communication System with Multi-gigabit Performance.
- Author
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Kwang Seon Kim, Bong-Su Kim, Min-Soo Kang, Woo-Jin Byun, and Hyung Chul Park
- Subjects
DIGITAL communications ,ORTHOGONAL frequency division multiplexing ,GALLIUM arsenide ,FOURIER transforms ,ERROR rates ,LOW noise amplifiers - 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 fourthharmonically pumped mixer are implemented using a 0.1-μm gallium arsenide pseudomorphic high-electronmobility 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. [ABSTRACT FROM AUTHOR]- Published
- 2014
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