17 September 2015 Hybrid bidirectional radio-over-fiber-based orthogonal frequency division multiple access-passive optical network supporting 60/120  GHz using offset quadrate phase shift keying
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Abstract
A hybrid bidirectional orthogonal frequency division multiple access-passive optical network (OFDMA-PON) based on offset quadrate phase shift keying (OQPSK) to support 60- and 120-GHz radio-over-fiber system is proposed. The system can support wired/wireless applications and enable the dynamic bandwidth allocation according to a subscriber’s application. It is successfully achieved by using the millimeter waves (MMWs) generation and the carrier-reuse technique. In the proposed scheme, the MMW bands used for downlink (DL) and uplink transmissions are generated at the optical line terminal by the dual-arm Mach–Zehnder modulators. Both 60- and 120-GHz MMWs are obtained for the transmission of the high bit-rate services in source-free optical network units (ONUs), only using a single 15-GHz sinusoidal wave source. The Rayleigh backscattering effect is considered in the proposed OQPSK-based OFDMA-PON. For DL transmission over a 30-km single-mode fiber, the power penalties are less than 0.8 and 1 dB for the OQPSK-OFDM wired data at 10  Gb/s and the OQPSK-OFDM wireless data at 5  Gb/s, respectively.
© 2015 Society of Photo-Optical Instrumentation Engineers (SPIE)
Chongfu Zhang, Chongfu Zhang, Chen Chen, Chen Chen, Kun Qiu, Kun Qiu, } "Hybrid bidirectional radio-over-fiber-based orthogonal frequency division multiple access-passive optical network supporting 60/120  GHz using offset quadrate phase shift keying," Optical Engineering 54(9), 096108 (17 September 2015). https://doi.org/10.1117/1.OE.54.9.096108 . Submission:
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