상세정보
학술지
16-QAM-Based Highly Spectral-Efficient E-band Communication System with Bit Rate up to 10 Gbps
- 발행일
- 201210
- 출처
- ETRI Journal, v.34 no.5, pp.649-654
- ISSN
- 1225-6463
- 출판사
- 한국전자통신연구원 (ETRI)
- 협약과제
- 11PR2500, 스펙트럼 공학 및 밀리미터파대 전파자원 이용기술개발, 최재익
- 초록
- This paper presents a novel 16-quadrature-amplitude- modulation (QAM) E-band communication system. The system can deliver 10 Gbps through eight channels with a bandwidth of 5 GHz (71-76 GHz/81-86 GHz). Each channel occupies 390 MHz and delivers 1.25 Gbps using a 16-QAM. Thus, this system can achieve a bandwidth efficiency of 3.2 bit/s/Hz. To implement the system, a driver amplifier and an RF up-/down-conversion mixer are implemented using a 0.1 μm gallium arsenide pseudomorphic high-electron-mobility transistor (GaAs pHEMT) process. A single-IF architecture is chosen for the RF receiver. In the digital modem, 24 square root raised cosine filters and four (255, 239) Reed-Solomon forward error correction codecs are used in parallel. 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 21.5 dB. © 2012 ETRI.
- KSP 제안 키워드
- 16 quadrature amplitude modulation(16QAM), 25 Gbps, 5 GHz, 6 GHz, Bandwidth Efficiency, Bit Error Rate(And BER), Bit Rate, Communication system, Down-conversion mixer, Driver Amplifier, E-band communication