Abstract

The increasing demand for wireless video-based interactive and multimedia data services explains why 60-GHz millimeter-wave wireless system is a promising candidate to provide multi-gigabit-per-second wireless services. While attempting to generate and transmit 60 GHz signals in a wireless system cost effectively and increase the spectral efficiency to facilitate multi-gigabit-per-second services, this work reviews three radio-over-fiber (RoF) systems based on optical frequency multiplication (up to 6 times) to reduce the bandwidth requirement of optical transmitters. Additionally, orthogonal frequency division multiplexing (OFDM) signals with multi-level modulation formats (16 QAM) are utilized to achieve an ultrahigh data rate of 28 Gbps within the 7-GHz license-free band and compensate for an uneven frequency response of 60-GHz RoF systems. Negligible power penalty following 25-km standard single mode fiber (SSMF) transmission is observed, capable of significantly extending the service range to various applications within a building or campus.

© 2010 IEEE

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  1. Y. X. Guo, B. Luo, C. S. Park, L. C. Ong, M.-T. Zhou, S. Kato, "60 GHz radio-over-fiber for Gbps transmission," Proc. Global Symp. Millimeter Waves (GSMM) (2008) pp. 41-43.
  2. C. S. Park, Y. X. Guo, L. C. Ong, Y. K. Yeo, Y. X. Wang, M. T. Zhou, H. Harada, "Application of an electroabsorption modulator in radio-over-fiber networks invited," J. Opt. Netw. 8, 146-155 (2009).
  3. T. Taniguchi, N. Sakurai, K. Kumozaki, T. Imai, "Full-duplex 1.0 Gbit/s data transmission over 60 GHz radio-on-fiber access system based on the loop-back optical heterodyne technique," J. Lightw. Technol. 26, 1765-1776 (2008).
  4. J. H. Seo, C. S. Choi, Y. S. Kang, Y. D. Chung, J. Kim, W. Y. Choi, "SOA-EAM frequency up/down-converters for 60-GHz bidirectional radio-on-fiber systems," IEEE Trans. Microw. Theory Tech. 54, 959-966 (2006).
  5. T. Kuri, K. Kitayama, Y. Takahashi, "A single light-source configuration for full-duplex 60-GHz-band radio-on-fiber system," IEEE Trans. Microw. Theory Tech. 51, 431-439 (2003).
  6. M. Weiß, M. Huchard, A. Stöhr, B. Charbonnier, S. Fedderwitz, D. S. Jäger, "60-GHz photonic millimeter-wave link for short- to medium-range wireless transmission up to 12.5 Gb/s," J. Lightw. Technol. 26, 2424-2429 (2008).
  7. H. C. Chien, A. Chowdhury, Z. Jia, Y. T. Hsueh, G. K. Chang, "60 GHz millimeter-wave gigabit wireless services over long-reach passive optical network using remote signal regeneration and upconversion," Opt. Exp. 17, 3036-3041 (2009).
  8. Z. Jia, J. Yu, D. Qian, G. Ellinas, G. K. Chang, "Experimental demonstration for delivering 1-Gb/s OFDM signals over 80-km SSMF in 40-GHz radio-over-fiber access systems," Proc. OFC 2008 Paper JWA 108.
  9. M. Huchard, M. Weiß, A. Pizzinat, S. Meyer, P. Guignard, B. Charbonnier, "Ultra-broadband wireless home network based on 60-GHz WPAN cells interconnected via RoF," J. Lightw. Technol. 26, 2364-2372 (2008).
  10. G. H. Nguyen, B. Cabon, Y. Le Guennec, "Generation of 60-GHz MB-OFDM signal-over-fiber by up-conversion using cascaded external modulators," J. Lightw. Technol. 27, 1496-1502 (2009).
  11. W. K. Kim, S. W. Kwon, W. J. Jeong, G. S. Son, K. H. Lee, W. Y. Choi, W. S. Yang, H. M. Lee, H. Y. Lee, "Integrated optical modulator for signal up-conversion over radio-on-fiber link," Opt. Exp. 17, 2638-2645 (2009).
  12. Y. T. Hsueh, Z. S. Jia, H. C. Chien, J. J. Yu, G. K. Chang, "A novel bidirectional 60-GHz radio-over-fiber scheme with multiband signal generation using a single intensity modulator," IEEE Photon. Technol. Lett. 21, 1338-1340 (2009).
  13. C. S. Park, Y. Guo, Y. K. Yeo, Y. Wang, L. C. Ong, S. Kato, "Fiber-optic 60-GHz wireless downlink using cross-absorption modulation in an EAM," IEEE Photon. Technol. Lett. 20, 557-559 (2008).
  14. A. Ng'oma, M. Sauer, D. Thelen, J. George, Ieee, "Data throughput tripling by feed-forward equalization and photonic QPSK in a 7 Gbps single-carrier RoF link at 60 GHz," Proc. Int. Topical Meeting Microwave Photonics/2008 Asia-Pacific Microwave Photonics Conf. (2008) pp. 213-216.
  15. M. Mohamed, X. P. Zhang, B. Hraimel, K. Wu, "Frequency sixupler for millimeter-wave over fiber systems," Opt. Exp. 16, 10141-10151 (2008).
  16. Z. S. Jia, J. J. Yu, Y. T. Hsueh, A. Chowdhury, H. C. Chien, J. A. Buck, G. K. Chang, "Multiband signal generation and dispersion-tolerant transmission based on photonic frequency tripling technology for 60-GHz radio-over-fiber systems," IEEE Photon. Technol. Lett. 20, 1470-1472 (2008).
  17. Y. Le Guennec, G. Maury, J. P. Yao, B. Cabon, "New optical microwave up-conversion solution in radio-over-fiber networks for 60-GHz wireless applications," J. Lightw. Technol. 24, 1277-1282 (2006).
  18. A. Ng'oma, M. Sauer, F. Annunziata, W. J. Jiang, C. T. Lin, J. Chen, P. T. Shi, S. Chi, "14 Gbps 60 GHz RoF link employing a simple system architecture and OFDM modulation," Proc. of IEEE MWP 2009 Conf. 2009 (2009).
  19. P. T. Shih, C. T. Lin, W. J. Jiang, Y. H. Chen, J. Chen, S. Chi, "Full duplex 60-GHz RoF link employing tandem single sideband modulation scheme and high spectral efficiency modulation format," Opt. Exp. 17, 19501-19508 (2009).
  20. P. T. Shih, C. T. Lin, H. S. Huang, W. J. Jiang, J. Chen, A. Ng'oma, M. Sauer, S. Chi, "13.75-Gb/s OFDM signal generation for 60-GHz RoF system within 7-GHz license-free band via frequency sextupling," Proc. Eur. Conf. Opt. Commun. (ECOC 2009) (2009).
  21. C. T. Lin, E. Z. Wong, W. J. Jiang, P. T. Shih, J. Chen, S. Chi, "28-Gb/s 16-QAM OFDM radio-over-fiber system within 7-GHz license-free band at 60 GHz employing all-optical up-conversion," Proc. Conf. Lasers and Electro-Optics (CLEO 2009) (2009).
  22. S. Geng, J. Kivinen, X. Zhao, P. Vainikainen, "Millimeter-wave propagation channel characterization for short-range wireless communications," IEEE Trans. Veh. Technol. 58, 3-13 (2009).
  23. A. J. Lowery, L. B. Du, J. Armstrong, "Performance of optical OFDM in ultralong-haul WDM lightwave systems," J. Lightw. Technol. 25, 131-138 (2007).
  24. S. L. Jansen, I. Morita, T. C. W. Schenk, H. Tanaka, "121.9-Gb/s PDM-OFDM transmission with 2-b/s/Hz spectral efficiency over 1000 km of SSMF," J. Lightw. Technol. 27, 177-188 (2009).
  25. Q. Yang, Y. Tang, Y. Ma, W. Shieh, "Experimental demonstration and numerical simulation of 107-Gb/s high spectral efficiency coherent optical OFDM," J. Lightw. Technol. 27, 168-176 (2009).
  26. W. Shieh, "High spectral efficiency coherent optical OFDM for 1 Tb/s ethernet transport," Proc. Optical Fiber Commun. Conf. (OFC 2009) (2009).
  27. B. J. Dixon, R. D. Pollard, S. Iezekiel, "Orthogonal frequency-division multiplexing in wireless communication systems with multimode fiber feeds," IEEE Trans. Microw. Theory Tech. 49, 1404-1409 (2001).
  28. J. M. Tang, P. M. Lane, K. A. Shore, "High-speed transmission of adaptively modulated optical OFDM signals over multimode fibers using directly modulated DFBs," J. Lightw. Technol. 24, 429-441 (2006).
  29. Z. Tong, Q. Yang, Y. Ma, W. Shieh, "21.4 Gbit/s transmission over 200 km multimode fibre using coherent optical OFDM," IEEE Electron. Lett. 44, 1373-1374 (2008).
  30. C. Lethien, C. Loyez, J. P. Vilcot, R. Kassi, N. Rolland, C. Sion, P. A. Rolland, "Review of glass and polymer multimode fibers used in a wimedia ultrawideband MB-OFDM radio over fiber system," J. Lightw. Technol. 27, 1320-1331 (2009).
  31. X. Q. Jin, J. M. Tang, "Effectiveness of the use of 3-dB bandwidths of multimode fibres for estimating the transmission performance of adaptively modulated optical OFDM signals over IMDD links," J. Lightw. Technol. 27, 3992-3998 (2009).
  32. I. B. Djordjevic, "LDPC-coded OFDM transmission over graded-index plastic optical fiber links," IEEE Photon. Technol. Lett. 19, 871-873 (2007).
  33. J. Yu, D. Qian, M. Huang, Z. Jia, G. K. Chang, T. Wang, "16 Gbit/s radio OFDM signals over graded-index plastic optical fiber," Proc. Eur. Conf. Optical Communication., (ECOC 2008) (2008).
  34. C. Lim, M. Attygalle, A. Nirmalathas, D. Novak, R. Waterhouse, "Analysis of optical carrier-to-sideband ratio for improving transmission performance in fiber-radio links," IEEE Trans. Microw. Theory Tech. 54, 2181-2187 (2006).
  35. C. T. Lin, Y. M. Lin, J. Chen, S. P. Dai, P. T. Shih, P. C. Peng, S. Chi, "Optical direct-detection OFDM signal generation for radio-over-fiber link using frequency doubling scheme with carrier suppression," OSA Opt. Exp. 16, 6056-6063 (2008).
  36. C. T. Lin, P. T. Shih, J. Chen, W. Q. Xue, P. C. Peng, S. Chi, "Optical millimeter-wave signal generation using frequency quadrupling technique and no optical filtering," IEEE Photon. Technol. Lett. 20, 1027-1029 (2008).
  37. P. T. Shih, C. T. Lin, W. J. Jiang, J. Chen, H. S. Huang, Y. H. Chen, P. C. Peng, S. Chi, "WDM up-conversion employing frequency quadrupling in optical modulator," Opt. Exp. 17, 1726-1733 (2009).

2009 (12)

C. S. Park, Y. X. Guo, L. C. Ong, Y. K. Yeo, Y. X. Wang, M. T. Zhou, H. Harada, "Application of an electroabsorption modulator in radio-over-fiber networks invited," J. Opt. Netw. 8, 146-155 (2009).

G. H. Nguyen, B. Cabon, Y. Le Guennec, "Generation of 60-GHz MB-OFDM signal-over-fiber by up-conversion using cascaded external modulators," J. Lightw. Technol. 27, 1496-1502 (2009).

W. K. Kim, S. W. Kwon, W. J. Jeong, G. S. Son, K. H. Lee, W. Y. Choi, W. S. Yang, H. M. Lee, H. Y. Lee, "Integrated optical modulator for signal up-conversion over radio-on-fiber link," Opt. Exp. 17, 2638-2645 (2009).

Y. T. Hsueh, Z. S. Jia, H. C. Chien, J. J. Yu, G. K. Chang, "A novel bidirectional 60-GHz radio-over-fiber scheme with multiband signal generation using a single intensity modulator," IEEE Photon. Technol. Lett. 21, 1338-1340 (2009).

H. C. Chien, A. Chowdhury, Z. Jia, Y. T. Hsueh, G. K. Chang, "60 GHz millimeter-wave gigabit wireless services over long-reach passive optical network using remote signal regeneration and upconversion," Opt. Exp. 17, 3036-3041 (2009).

P. T. Shih, C. T. Lin, W. J. Jiang, Y. H. Chen, J. Chen, S. Chi, "Full duplex 60-GHz RoF link employing tandem single sideband modulation scheme and high spectral efficiency modulation format," Opt. Exp. 17, 19501-19508 (2009).

S. Geng, J. Kivinen, X. Zhao, P. Vainikainen, "Millimeter-wave propagation channel characterization for short-range wireless communications," IEEE Trans. Veh. Technol. 58, 3-13 (2009).

S. L. Jansen, I. Morita, T. C. W. Schenk, H. Tanaka, "121.9-Gb/s PDM-OFDM transmission with 2-b/s/Hz spectral efficiency over 1000 km of SSMF," J. Lightw. Technol. 27, 177-188 (2009).

Q. Yang, Y. Tang, Y. Ma, W. Shieh, "Experimental demonstration and numerical simulation of 107-Gb/s high spectral efficiency coherent optical OFDM," J. Lightw. Technol. 27, 168-176 (2009).

C. Lethien, C. Loyez, J. P. Vilcot, R. Kassi, N. Rolland, C. Sion, P. A. Rolland, "Review of glass and polymer multimode fibers used in a wimedia ultrawideband MB-OFDM radio over fiber system," J. Lightw. Technol. 27, 1320-1331 (2009).

X. Q. Jin, J. M. Tang, "Effectiveness of the use of 3-dB bandwidths of multimode fibres for estimating the transmission performance of adaptively modulated optical OFDM signals over IMDD links," J. Lightw. Technol. 27, 3992-3998 (2009).

P. T. Shih, C. T. Lin, W. J. Jiang, J. Chen, H. S. Huang, Y. H. Chen, P. C. Peng, S. Chi, "WDM up-conversion employing frequency quadrupling in optical modulator," Opt. Exp. 17, 1726-1733 (2009).

2008 (9)

Z. Tong, Q. Yang, Y. Ma, W. Shieh, "21.4 Gbit/s transmission over 200 km multimode fibre using coherent optical OFDM," IEEE Electron. Lett. 44, 1373-1374 (2008).

C. T. Lin, Y. M. Lin, J. Chen, S. P. Dai, P. T. Shih, P. C. Peng, S. Chi, "Optical direct-detection OFDM signal generation for radio-over-fiber link using frequency doubling scheme with carrier suppression," OSA Opt. Exp. 16, 6056-6063 (2008).

C. T. Lin, P. T. Shih, J. Chen, W. Q. Xue, P. C. Peng, S. Chi, "Optical millimeter-wave signal generation using frequency quadrupling technique and no optical filtering," IEEE Photon. Technol. Lett. 20, 1027-1029 (2008).

M. Weiß, M. Huchard, A. Stöhr, B. Charbonnier, S. Fedderwitz, D. S. Jäger, "60-GHz photonic millimeter-wave link for short- to medium-range wireless transmission up to 12.5 Gb/s," J. Lightw. Technol. 26, 2424-2429 (2008).

M. Huchard, M. Weiß, A. Pizzinat, S. Meyer, P. Guignard, B. Charbonnier, "Ultra-broadband wireless home network based on 60-GHz WPAN cells interconnected via RoF," J. Lightw. Technol. 26, 2364-2372 (2008).

C. S. Park, Y. Guo, Y. K. Yeo, Y. Wang, L. C. Ong, S. Kato, "Fiber-optic 60-GHz wireless downlink using cross-absorption modulation in an EAM," IEEE Photon. Technol. Lett. 20, 557-559 (2008).

M. Mohamed, X. P. Zhang, B. Hraimel, K. Wu, "Frequency sixupler for millimeter-wave over fiber systems," Opt. Exp. 16, 10141-10151 (2008).

Z. S. Jia, J. J. Yu, Y. T. Hsueh, A. Chowdhury, H. C. Chien, J. A. Buck, G. K. Chang, "Multiband signal generation and dispersion-tolerant transmission based on photonic frequency tripling technology for 60-GHz radio-over-fiber systems," IEEE Photon. Technol. Lett. 20, 1470-1472 (2008).

T. Taniguchi, N. Sakurai, K. Kumozaki, T. Imai, "Full-duplex 1.0 Gbit/s data transmission over 60 GHz radio-on-fiber access system based on the loop-back optical heterodyne technique," J. Lightw. Technol. 26, 1765-1776 (2008).

2007 (2)

A. J. Lowery, L. B. Du, J. Armstrong, "Performance of optical OFDM in ultralong-haul WDM lightwave systems," J. Lightw. Technol. 25, 131-138 (2007).

I. B. Djordjevic, "LDPC-coded OFDM transmission over graded-index plastic optical fiber links," IEEE Photon. Technol. Lett. 19, 871-873 (2007).

2006 (4)

C. Lim, M. Attygalle, A. Nirmalathas, D. Novak, R. Waterhouse, "Analysis of optical carrier-to-sideband ratio for improving transmission performance in fiber-radio links," IEEE Trans. Microw. Theory Tech. 54, 2181-2187 (2006).

J. M. Tang, P. M. Lane, K. A. Shore, "High-speed transmission of adaptively modulated optical OFDM signals over multimode fibers using directly modulated DFBs," J. Lightw. Technol. 24, 429-441 (2006).

J. H. Seo, C. S. Choi, Y. S. Kang, Y. D. Chung, J. Kim, W. Y. Choi, "SOA-EAM frequency up/down-converters for 60-GHz bidirectional radio-on-fiber systems," IEEE Trans. Microw. Theory Tech. 54, 959-966 (2006).

Y. Le Guennec, G. Maury, J. P. Yao, B. Cabon, "New optical microwave up-conversion solution in radio-over-fiber networks for 60-GHz wireless applications," J. Lightw. Technol. 24, 1277-1282 (2006).

2003 (1)

T. Kuri, K. Kitayama, Y. Takahashi, "A single light-source configuration for full-duplex 60-GHz-band radio-on-fiber system," IEEE Trans. Microw. Theory Tech. 51, 431-439 (2003).

2001 (1)

B. J. Dixon, R. D. Pollard, S. Iezekiel, "Orthogonal frequency-division multiplexing in wireless communication systems with multimode fiber feeds," IEEE Trans. Microw. Theory Tech. 49, 1404-1409 (2001).

IEEE Electron. Lett. (1)

Z. Tong, Q. Yang, Y. Ma, W. Shieh, "21.4 Gbit/s transmission over 200 km multimode fibre using coherent optical OFDM," IEEE Electron. Lett. 44, 1373-1374 (2008).

IEEE Photon. Technol. Lett. (5)

I. B. Djordjevic, "LDPC-coded OFDM transmission over graded-index plastic optical fiber links," IEEE Photon. Technol. Lett. 19, 871-873 (2007).

C. T. Lin, P. T. Shih, J. Chen, W. Q. Xue, P. C. Peng, S. Chi, "Optical millimeter-wave signal generation using frequency quadrupling technique and no optical filtering," IEEE Photon. Technol. Lett. 20, 1027-1029 (2008).

Y. T. Hsueh, Z. S. Jia, H. C. Chien, J. J. Yu, G. K. Chang, "A novel bidirectional 60-GHz radio-over-fiber scheme with multiband signal generation using a single intensity modulator," IEEE Photon. Technol. Lett. 21, 1338-1340 (2009).

C. S. Park, Y. Guo, Y. K. Yeo, Y. Wang, L. C. Ong, S. Kato, "Fiber-optic 60-GHz wireless downlink using cross-absorption modulation in an EAM," IEEE Photon. Technol. Lett. 20, 557-559 (2008).

Z. S. Jia, J. J. Yu, Y. T. Hsueh, A. Chowdhury, H. C. Chien, J. A. Buck, G. K. Chang, "Multiband signal generation and dispersion-tolerant transmission based on photonic frequency tripling technology for 60-GHz radio-over-fiber systems," IEEE Photon. Technol. Lett. 20, 1470-1472 (2008).

IEEE Trans. Microw. Theory Tech. (4)

J. H. Seo, C. S. Choi, Y. S. Kang, Y. D. Chung, J. Kim, W. Y. Choi, "SOA-EAM frequency up/down-converters for 60-GHz bidirectional radio-on-fiber systems," IEEE Trans. Microw. Theory Tech. 54, 959-966 (2006).

T. Kuri, K. Kitayama, Y. Takahashi, "A single light-source configuration for full-duplex 60-GHz-band radio-on-fiber system," IEEE Trans. Microw. Theory Tech. 51, 431-439 (2003).

C. Lim, M. Attygalle, A. Nirmalathas, D. Novak, R. Waterhouse, "Analysis of optical carrier-to-sideband ratio for improving transmission performance in fiber-radio links," IEEE Trans. Microw. Theory Tech. 54, 2181-2187 (2006).

B. J. Dixon, R. D. Pollard, S. Iezekiel, "Orthogonal frequency-division multiplexing in wireless communication systems with multimode fiber feeds," IEEE Trans. Microw. Theory Tech. 49, 1404-1409 (2001).

IEEE Trans. Veh. Technol. (1)

S. Geng, J. Kivinen, X. Zhao, P. Vainikainen, "Millimeter-wave propagation channel characterization for short-range wireless communications," IEEE Trans. Veh. Technol. 58, 3-13 (2009).

J. Lightw. Technol. (11)

A. J. Lowery, L. B. Du, J. Armstrong, "Performance of optical OFDM in ultralong-haul WDM lightwave systems," J. Lightw. Technol. 25, 131-138 (2007).

S. L. Jansen, I. Morita, T. C. W. Schenk, H. Tanaka, "121.9-Gb/s PDM-OFDM transmission with 2-b/s/Hz spectral efficiency over 1000 km of SSMF," J. Lightw. Technol. 27, 177-188 (2009).

Q. Yang, Y. Tang, Y. Ma, W. Shieh, "Experimental demonstration and numerical simulation of 107-Gb/s high spectral efficiency coherent optical OFDM," J. Lightw. Technol. 27, 168-176 (2009).

J. M. Tang, P. M. Lane, K. A. Shore, "High-speed transmission of adaptively modulated optical OFDM signals over multimode fibers using directly modulated DFBs," J. Lightw. Technol. 24, 429-441 (2006).

C. Lethien, C. Loyez, J. P. Vilcot, R. Kassi, N. Rolland, C. Sion, P. A. Rolland, "Review of glass and polymer multimode fibers used in a wimedia ultrawideband MB-OFDM radio over fiber system," J. Lightw. Technol. 27, 1320-1331 (2009).

X. Q. Jin, J. M. Tang, "Effectiveness of the use of 3-dB bandwidths of multimode fibres for estimating the transmission performance of adaptively modulated optical OFDM signals over IMDD links," J. Lightw. Technol. 27, 3992-3998 (2009).

M. Weiß, M. Huchard, A. Stöhr, B. Charbonnier, S. Fedderwitz, D. S. Jäger, "60-GHz photonic millimeter-wave link for short- to medium-range wireless transmission up to 12.5 Gb/s," J. Lightw. Technol. 26, 2424-2429 (2008).

M. Huchard, M. Weiß, A. Pizzinat, S. Meyer, P. Guignard, B. Charbonnier, "Ultra-broadband wireless home network based on 60-GHz WPAN cells interconnected via RoF," J. Lightw. Technol. 26, 2364-2372 (2008).

G. H. Nguyen, B. Cabon, Y. Le Guennec, "Generation of 60-GHz MB-OFDM signal-over-fiber by up-conversion using cascaded external modulators," J. Lightw. Technol. 27, 1496-1502 (2009).

Y. Le Guennec, G. Maury, J. P. Yao, B. Cabon, "New optical microwave up-conversion solution in radio-over-fiber networks for 60-GHz wireless applications," J. Lightw. Technol. 24, 1277-1282 (2006).

T. Taniguchi, N. Sakurai, K. Kumozaki, T. Imai, "Full-duplex 1.0 Gbit/s data transmission over 60 GHz radio-on-fiber access system based on the loop-back optical heterodyne technique," J. Lightw. Technol. 26, 1765-1776 (2008).

J. Opt. Netw. (1)

Opt. Exp. (5)

W. K. Kim, S. W. Kwon, W. J. Jeong, G. S. Son, K. H. Lee, W. Y. Choi, W. S. Yang, H. M. Lee, H. Y. Lee, "Integrated optical modulator for signal up-conversion over radio-on-fiber link," Opt. Exp. 17, 2638-2645 (2009).

H. C. Chien, A. Chowdhury, Z. Jia, Y. T. Hsueh, G. K. Chang, "60 GHz millimeter-wave gigabit wireless services over long-reach passive optical network using remote signal regeneration and upconversion," Opt. Exp. 17, 3036-3041 (2009).

M. Mohamed, X. P. Zhang, B. Hraimel, K. Wu, "Frequency sixupler for millimeter-wave over fiber systems," Opt. Exp. 16, 10141-10151 (2008).

P. T. Shih, C. T. Lin, W. J. Jiang, Y. H. Chen, J. Chen, S. Chi, "Full duplex 60-GHz RoF link employing tandem single sideband modulation scheme and high spectral efficiency modulation format," Opt. Exp. 17, 19501-19508 (2009).

P. T. Shih, C. T. Lin, W. J. Jiang, J. Chen, H. S. Huang, Y. H. Chen, P. C. Peng, S. Chi, "WDM up-conversion employing frequency quadrupling in optical modulator," Opt. Exp. 17, 1726-1733 (2009).

OSA Opt. Exp. (1)

C. T. Lin, Y. M. Lin, J. Chen, S. P. Dai, P. T. Shih, P. C. Peng, S. Chi, "Optical direct-detection OFDM signal generation for radio-over-fiber link using frequency doubling scheme with carrier suppression," OSA Opt. Exp. 16, 6056-6063 (2008).

Proc. OFC 2008 (1)

Z. Jia, J. Yu, D. Qian, G. Ellinas, G. K. Chang, "Experimental demonstration for delivering 1-Gb/s OFDM signals over 80-km SSMF in 40-GHz radio-over-fiber access systems," Proc. OFC 2008 Paper JWA 108.

Other (7)

Y. X. Guo, B. Luo, C. S. Park, L. C. Ong, M.-T. Zhou, S. Kato, "60 GHz radio-over-fiber for Gbps transmission," Proc. Global Symp. Millimeter Waves (GSMM) (2008) pp. 41-43.

P. T. Shih, C. T. Lin, H. S. Huang, W. J. Jiang, J. Chen, A. Ng'oma, M. Sauer, S. Chi, "13.75-Gb/s OFDM signal generation for 60-GHz RoF system within 7-GHz license-free band via frequency sextupling," Proc. Eur. Conf. Opt. Commun. (ECOC 2009) (2009).

C. T. Lin, E. Z. Wong, W. J. Jiang, P. T. Shih, J. Chen, S. Chi, "28-Gb/s 16-QAM OFDM radio-over-fiber system within 7-GHz license-free band at 60 GHz employing all-optical up-conversion," Proc. Conf. Lasers and Electro-Optics (CLEO 2009) (2009).

A. Ng'oma, M. Sauer, F. Annunziata, W. J. Jiang, C. T. Lin, J. Chen, P. T. Shi, S. Chi, "14 Gbps 60 GHz RoF link employing a simple system architecture and OFDM modulation," Proc. of IEEE MWP 2009 Conf. 2009 (2009).

A. Ng'oma, M. Sauer, D. Thelen, J. George, Ieee, "Data throughput tripling by feed-forward equalization and photonic QPSK in a 7 Gbps single-carrier RoF link at 60 GHz," Proc. Int. Topical Meeting Microwave Photonics/2008 Asia-Pacific Microwave Photonics Conf. (2008) pp. 213-216.

J. Yu, D. Qian, M. Huang, Z. Jia, G. K. Chang, T. Wang, "16 Gbit/s radio OFDM signals over graded-index plastic optical fiber," Proc. Eur. Conf. Optical Communication., (ECOC 2008) (2008).

W. Shieh, "High spectral efficiency coherent optical OFDM for 1 Tb/s ethernet transport," Proc. Optical Fiber Commun. Conf. (OFC 2009) (2009).

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