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Journal Article
16-QAM OFDM-Based W-Band Polarization-Division Duplex Communication System with Multi-Gigabit Performance
- Authors
- Kwang Seon Kim, Bong-Su Kim, Min-Soo Kang, Woo-Jin Byun, Hyung Chul Park
- Issue Date
- 2014-04
- Citation
- ETRI Journal, v.36, no.2, pp.206-213
- ISSN
- 1225-6463
- Publisher
- 한국전자통신연구원 (ETRI)
- Language
- English
- Type
- Journal Article
- 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. © 2014 ETRI.
- KSP Keywords
- 16-ary quadrature amplitude modulation(16QAM), Bit Error rate, Communication system, Experiment results, Fast Fourier Transform(FFI), Forward Error Correction(FEC), Full duplex communication, GHz band, Gallium Arsenide, Low-Noise Amplifier(LNA), Multi-Gigabit