Dr Roger Giddings
Senior Lecturer in Optical Communications & DSP

- Cyhoeddwyd
Experimental Demonstrations of Concurrent Adaptive Inter-ONU and Upstream Communications in IMDD Hybrid SSB OFDM-DFMA PONs
Zhong, Z., Jin, W., He, J., Chang, D., Giddings, R., Hong, Y., O'Sullivan, M., Durrant, T., Mariani, G., Trewern, J. & Tang, J., 6 Meh 2021.Allbwn ymchwil: Cyfraniad at gynhadledd › Papur › adolygiad gan gymheiriaid
- Cyhoeddwyd
Concurrent Inter-ONU Communications for Next Generation Mobile Fronthauls based on IMDD Hybrid SSB OFDM-DFMA PONs
Zhong, Z., Jin, W., Jiang, S., He, J., Chang, D., Hong, Y., Giddings, R., Jin, X., O'Sullivan, M., Durrant, T., Trewern, J., Mariani, G. & Tang, J., 1 Rhag 2021, Yn: Journal of Lightwave Technology. 39, 23, t. 7360-7369Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Experimental Demonstrations of Matching Filter-free Digital Filter Multiplexed SSB OFDM IMDD Transmission Systems
Zhong, Z., Jin, W., Dong, Y., Sankoh, A., He, J., Hong, Y., Giddings, R., Pierce, I., O'Sullivan, M., Lee, J., Mariani, G., Durrant, T. & Tang, J., Ebr 2021, Yn: IEEE Photonics Journal. 13, 2, 12 t., 7900512.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Input/output reconfigurable adaptively modulated optical OFDM modems using subcarrier modulation
Zheng, X., Wei, J. L., Yang, X. L., Giddings, R. P., Tang, J. M. & Shore, K. A., 2009, t. 1-2. 2 t.Allbwn ymchwil: Cyfraniad at gynhadledd › Papur › adolygiad gan gymheiriaid
- Cyhoeddwyd
Simple adaptively modulated optical OFDM modems using subcarrier modulation with input/output reconfigurability
Zheng, X., Wei, J. L., Giddings, R. P. & Tang, J. M., Meh 2010, t. 1-8. 8 t.Allbwn ymchwil: Cyfraniad at gynhadledd › Papur › adolygiad gan gymheiriaid
- Cyhoeddwyd
Record-high and robust 17.125 Gb/s gross-rateover 25 km SSMF transmissions of real-time dual-band optical OFDM signals directly modulated by 1 GHz RSOAs
Zhang, Q. W., Hugues-Salas, E., Ling, Y., Zhang, H. B., Giddings, R. P., Zhang, J. J., Wang, M. & Tang, J. M., 2014, Yn: Optics Express. 22, 6, t. 6339-6348 10 t.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Experimental demonstrations of record high REAM intensity modulator-enabled 19.25Gb/s real-time end-to-end dual-band optical OFDM colorless transmissions over 25km SSMF IMDD systems
Zhang, Q. W., Hugues-Salas, E., Giddings, R. P., Wang, M. & Tang, J. M., 2013, Yn: Optics Express. 21, 7, t. 9167-9179 13 t.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Stage-dependent DSP Operation Range Clipping-induced Bit Resolution Reductions of Full Parallel 64-point FFTs Incorporated in FPGA-based Optical OFDM Receivers
Zhang, J., Tang, Z., Giddings, R., Wu, Q., Wang, W., Cao, B., Zhang, Q. & Tang, J. M., 15 Awst 2016, Yn: Journal of Lightwave Technology. 34, 16, t. 3752-3760Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
A Clock-gating-based Energy-efficient Scheme for ONUs in Real-time IMDD OFDM-PONs
Zhang, J., Zhao, J., Huang, H., Ye, N., Giddings, R., Li, Z., Qin, D., Zhang, Q. & Tang, J., 15 Gorff 2020, Yn: Journal of Lightwave Technology. 38, 14, t. 3573-3583Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Analytical Solution of Stage-dependent Bit Resolution of Full Parallel Variable Point FFTs for Real-time DSP Implementation
Zhang, J., Wang, J., Giddings, R., Zhang, Q., Peng, J., Chen, J. & Tang, J., 15 Tach 2018, Yn: Journal of Lightwave Technology. 36, 22, t. 5177-5187Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
IFFT Stage-dependent Minimum Bit Resolution Maps for Real-time Optical OFDM Transceivers
Zhang, J., Giddings, R. P., Tang, J., Zhang, Q., Yuan, W., Giddings, R. & Wang, M., 9 Maw 2014.Allbwn ymchwil: Cyfraniad at gynhadledd › Papur
- Cyhoeddwyd
Semiconductor Optical Amplifier-Enabled Intensity Modulation of Adaptively Modulated Optical OFDM Signals in SMF-Based IMDD Systems
Wei, J., Hamie, A., Giddings, R. P. & Tang, J., 15 Awst 2009, Yn: Journal of Lightwave Technology. 27, 16, t. 3679-3689Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Wavelength reused bidirectional adaptively modulated optical OFDM transmission in colourless WDM-PONs
Wei, J. L., Hugues-Salas, E., Giddings, R. P., Jin, X. Q., Zheng, X. & Tang, J. M., 2010, t. 1-3. 3 t.Allbwn ymchwil: Cyfraniad at gynhadledd › Papur › adolygiad gan gymheiriaid
- Cyhoeddwyd
Improved power budgets of end-to-end real-time optical OFDM PON systems using wavelength-offset optical filtering
Wei, J. L., Hugues-Salas, E., C, S., [No Value], X., [Unknown], N., Jin, X. Q., Giddings, R. P., Pierce, I., Ortega, B., Shu, C. & Tang, J. M., 2012, t. 1-3. 3 t.Allbwn ymchwil: Cyfraniad at gynhadledd › Papur › adolygiad gan gymheiriaid
- Cyhoeddwyd
Wavelength-offset optical filtering induced power budget improvements in end-to-end real-time optical OFDM PON systems
Wei, J. L., Hugues-Salas, E., Jin, X. Q., Giddings, R. P., Pierce, I., Ortega, B. & Tang, J. M., 2012, t. 1-3. 3 t.Allbwn ymchwil: Cyfraniad at gynhadledd › Papur › adolygiad gan gymheiriaid
- Cyhoeddwyd
Wavelength reused bidirectional transmission of adaptively modulated optical OFDM signals in SOA/RSOA intensity modulator-based WDM-PONs
Wei, J. L., Hugues-Salas, E., Giddings, R. P., Jin, X. Q., Zheng, X. & Tang, J. M., Meh 2010, t. 1-9. 9 t.Allbwn ymchwil: Cyfraniad at gynhadledd › Papur › adolygiad gan gymheiriaid
- Cyhoeddwyd
Significant improvements in optical power budgets of real-time optical OFDM PON systems
Wei, J. L., Sanchez, C., Giddings, R. P., Hugues-Salas, E. & Tang, J. M., Medi 2010, Yn: Optics Express. 18, 20, t. 20732-20745 14 t.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
SOA intensity modulator-enabled colourless transmission of adaptively modulated optical OFDM signals for WDM-PONs
Wei, J. L., Yang, X. L., Giddings, R. P., Tang, J. M. & Shore, K. A., 2009, t. 1-2. 2 t.Allbwn ymchwil: Cyfraniad at gynhadledd › Papur › adolygiad gan gymheiriaid
- Wedi ei Dderbyn / Yn y wasg
Experimental Investigation of a Seamlessly Converged Fiber-Wireless Access Network Employing Free-Running Laser- and Envelope Detection-based mmWave Generation and Detection
Vallejo Castro, L., Gonem, O., Jin, W., Faruk, M. S., Giddings, R., Yi, X. & Tang, J., 21 Tach 2024, (Wedi ei Dderbyn / Yn y wasg) Yn: Optics Express.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Wedi ei Dderbyn / Yn y wasg
Soft-ROADM-enabled Seamlessly Converged Optical-Wireless Access Networks with Free-Running Laser-based Tunable mmWave Generation and RF Envelope Detection
Vallejo Castro, L., Gonem, O., Jin, W., Giddings, R. & Tang, J., 28 Maw 2024, (Wedi ei Dderbyn / Yn y wasg).Allbwn ymchwil: Cyfraniad at gynhadledd › Papur › adolygiad gan gymheiriaid
- E-gyhoeddi cyn argraffu
Seamlessly Converged Fiber-Wireless Access Networks with Dynamic Sub-wavelength Switching and Tunable Photonic mmWave Generation
Vallejo Castro, L., Gonem, O., Jin, W., Giddings, R., Chen, L., Huang, Y., Yi, X., Faruk, M. S. & Tang, J., 15 Tach 2024, (E-gyhoeddi cyn argraffu) Yn: Journal of Lightwave Technology.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Subcarrier Index-Power Modulated Optical OFDM (SIPM-OOFDM) for IMDD PON Systems
Tang, J., Halabi, F., Chen, L., Parre, S., Barthomeuf, S., Giddings, R. P. & Aupetit-Berthelemot, C., 22 Gorff 2016.Allbwn ymchwil: Cyfraniad at gynhadledd › Papur › adolygiad gan gymheiriaid
- Cyhoeddwyd
Experimental Demonstration of DSP-enabled Drop Operations of Flexible ROADMs Excluding Optical Filters and O-E-O Conversions
Tang, J., Duan, X., Deng, M., Jin, W., Giddings, R. P. & Mansoor, S., 22 Maw 2016.Allbwn ymchwil: Cyfraniad at gynhadledd › Papur › adolygiad gan gymheiriaid
- Cyhoeddwyd
Real-time optical OFDM transceivers for PON applications
Tang, J. M., Giddings, R. P., Jin, X. Q., Wei, J. L., Zheng, X., Giacoumidis, E., Hugues-Salas, E., Hong, Y., Shu, C., Groenewald, J. & Muthusamy, K., 2011, t. 1-3. 3 t.Allbwn ymchwil: Cyfraniad at gynhadledd › Papur › adolygiad gan gymheiriaid
- Cyhoeddwyd
Real-time optical OFDM and colorless OOFDMA PONs
Tang, J. M., Giddings, R. P., Hugues-Salas, E. & Hong, Y., 2012, t. 1. 1 t.Allbwn ymchwil: Cyfraniad at gynhadledd › Papur › adolygiad gan gymheiriaid
- Cyhoeddwyd
Robust and tunable 16.375Gb/s dual-band optical OFDM transmissions over directly modulated VCSEL-based 200m OM2 MMFs
Tang, J., Deng, M. L., Jiang, N., Duan, X., Giddings, R. P., Yi, X. W., Cao, B. Y., Mansoor, S. P., Qiu, K. & Tang, J. M., 8 Ion 2015, Yn: Optics Express. 23, 1, t. 373-383Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
RSOA Intensity Modulator Frequency Chirp-Enhanced Optical OFDM PON Performance
Tang, J., Cao, B., Deng, M., Cao, B. Y., Deng, M. L., Zhang, Q. W., Giddings, R. P. & Wang, M., 5 Meh 2015, Yn: IEEE Photonics Journal. 7, 3, t. Article Number: 7101711Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Colourless adaptively modulated optical OFDM transmitters using SOAs as intensity modulators.
Tang, J., Wei, J. L., Yang, X. L., Giddings, R. P. & Tang, J. M., 25 Mai 2009, Yn: Optics Express. 17, 11, t. 9012-9027Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Experimental demonstrations and extensive comparisons of end-to-end real-time optical OFDM transceivers with adaptive bit and/or power loading
Tang, J., Jin, X. Q., Wei, J. L., Giddings, R. P., Quinlan, T., Walker, S. & Tang, J. M., 1 Meh 2011, Yn: IEEE Photonics Journal. 3, 3, t. 500-511Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
First real-time experimental demonstrations of 11.25Gb/s optical OFDMA PONs with adaptive dynamic bandwidth allocation
Tang, J., Jin, X. Q., Hugues-Salas, E., Giddings, R. P., Wei, J. L., Groenwald, J. & Tang, J. M., 3 Hyd 2011, Yn: Optics Express. 19, 21, t. 20557-20570Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Negative power penalties of optical OFDM signal transmissions in directly modulated DFB laser-based IMDD systems incorporating negative dispersion fibers.
Tang, J., Zheng, X., Jin, X. Q., Giddings, R. P., Wei, J. L., Hugues-Salas, E., Hong, Y. & Tang, J. M., 1 Awst 2010, Yn: IEEE Photonics Journal. 2, 4, t. 532-542Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Robust real-time 15.125Gb/s adaptive optical OFDM transmissions over 100m OM2 MMFs utilizing directly modulated VCSELs subject to optical injection locking
Tang, J., Zhang, H. B., Yi, X. W., Zhang, Q. W., Ling, Y., Deng, M. L., Hugues-Salas, E., Giddings, R. P., Hong, Y. & Tang, J. M., 13 Ion 2014, Yn: Optics Express. 22, 1, t. 1163Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
New ROADMs with DSP-Enabled Dynamic and Flexible Operations for Elastic Optical Networks
Tang, J., Giddings, R. P., Tang, J. M., Jin, W., Duan, X., Bolea, M., Giddings, R., Jiang, N., Zhang, C. & Qiu, K., 22 Maw 2015.Allbwn ymchwil: Cyfraniad at gynhadledd › Papur
- Cyhoeddwyd
Digital Orthogonal Filtered Optical OFDM for Elastic PONs
Tang, J., Giddings, R. P., Tang, J. M., Bolea, M. & Giddings, R., 9 Maw 2014.Allbwn ymchwil: Cyfraniad at gynhadledd › Papur
- Cyhoeddwyd
Intra-Cavity Dispersion-Induced Performance Degradations of Dual-RSOA-Based Self-Seeded PON Systems
Tang, J., Giddings, R. P., Tang, J. M., Deng, M., Cao, B., Giddings, R., Dong, Y., Jian, N., Nesset, D. & Qiu, K., 22 Maw 2015.Allbwn ymchwil: Cyfraniad at gynhadledd › Papur
- Cyhoeddwyd
Experimental demonstration and optimisation of a synchronous clock recovery technique for real-time end-to-end optical OFDM transmission at 11.25Gb/s over 25km SSMF
Tang, J., Giddings, R. P. & Tang, J. M., 28 Ion 2011, Yn: Optics Express. 19, 3, t. 2831-2845Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Digital Orthogonal Filter-Enabled Optical OFDM Channel Multiplexing for Software-Reconfigurable Elastic PONs
Tang, J., Bolea, M., Giddings, R. P. & Tang, J. M., 16 Ion 2014, Yn: Journal of Lightwave Technology. 32, 6, t. 1200-1206Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
First experimental demonstration of 6Gb/s real-time optical OFDM transceivers incorporating channel estimation and variable power loading.
Tang, J., Giddings, R. P., Jin, X. Q. & Tang, J. M., 1 Hyd 2009, Yn: Optics Express. 17, 22, t. 19727-19738Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Stage-dependent minimum bit resolution maps of full-parallel pipelined FFT/IFFT architectures incorporated in real-time optical orthogonal frequency division multiplexing transceivers
Tang, J., Zhang, J., Yuan, W., Wang, K., Cao, B., Giddings, R. P., Wang, M. & Tang, J. M., 27 Awst 2014, Yn: Journal of Engineering. 2014, t. 1-8Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Wavelength reused bidirectional transmission of adaptively modulated optical OFDM signals in WDM-PONs incorporating SOA and RSOA intensity modulators.
Tang, J., Wei, J. L., Hugues-Salas, E., Giddings, R. P., Jin, X. Q., Zheng, X., Mansoor, S. P. & Tang, J. M., 10 Mai 2010, Yn: Optics Express. 18, 10, t. 9791-9808Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
13.625 Gb/s real-time dual-band adaptive optical orthogonal frequency division multiplexing transmissions over 25 km standard single-mode fibre intensity modulation and direct detection systems utilising strongly saturated reflective semiconductor optical amplifier intensity modulators
Tang, J., Zhang, Q., Hugues-Salas, E., Giddings, R. P., Zhang, J., Wang, M. & Tang, J. M., 1 Hyd 2014, Yn: IET Optoelectronics. 8, 5, t. 175-180Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Intra-Cavity Chromatic Dispersion Impacts on 10-Gb/s Optical OFDM Transmissions Over 25-km Dual-RSOA-Based Self-Seeded PON Systems
Tang, J., Deng, M. L., Cao, B. Y., Giddings, R. P., Dong, Y. X., Jiang, N., Nesset, D., Qiu, K. & Tang, J. M., 18 Rhag 2014, Yn: IEEE Photonics Journal. 7, 1Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
RSOA Intensity Modulator Frequency Chirp-Enabled 40Gb/s over 25km IMDD PON Systems
Tang, J., Giddings, R. P., Tang, J. M., Cao, B., Deng, M., Giddings, R., Duan, X., Zhang, Q. & Wang, M., 22 Maw 2015.Allbwn ymchwil: Cyfraniad at gynhadledd › Papur
- Cyhoeddwyd
Adaptively modulated optical OFDM modems utilizing RSOAs as intensity modulators in IMDD SMF transmission systems.
Tang, J., Wei, J. L., Hamie, A., Giddings, R. P., Hugues-Salas, E., Zheng, X., Mansoor, S. P. & Tang, J. M., 8 Ebr 2010, Yn: Optics Express. 18, 8, t. 8556-8573Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Experimental demonstration of real-time 3Gb/s optical OFDM transceivers.
Tang, J., Giddings, R. P., Jin, X. Q. & Tang, J. M., 14 Medi 2009, Yn: Optics Express. 17, 19, t. 16654-16665Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
DFT-Spread Spectrally Overlapped Hybrid OFDM-Digital Filter Multiple Access IMDD PONs
Sankoh, A., Jin, W., Zhong, Z., He, J., Hong, Y., Giddings, R. & Tang, J., 2 Medi 2021, Yn: Sensors. 21, 17, 5903.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Hybrid OFDM-Digital Filter Multiple Access PONs Utilizing Spectrally Overlapped Digital Orthogonal Filtering
Sankoh, A., Jin, W., Zhong, Z., He, J., Hong, Y., Giddings, R., Pierce, I., O'Sullivan, M., Lee, J., Durrant, T. & Tang, J., Hyd 2020, Yn: IEEE Photonics Journal. 12, 5, 10 t., 7905311.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
DSP-enabled reconfigurable and transparent spectral converters for converging optical and mobile fronthaul/backhaul networks
Mao, M. Z., Giddings, R., Cao, B. Y., Xu, Y. T., Wang, M. & Tang, J., 9 Meh 2017, Yn: Optics Express. t. 13836-13856Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Directly Modulated VCSEL-Based Real-Time 11.25-Gb/s Optical OFDM Transmission Over 2000-m Legacy MMFs
Mansoor, S. P., Tang, J., Hugues-Salas, E., Jin, X. Q., Giddings, R. P., Hong, Y., Mansoor, S., Villafranca, A. & Tang, J. M., 1 Chwef 2012, Yn: IEEE Photonics Journal. 4, 1, t. 143-154Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
17.125Gb/s over 25km transmissions of real-time dual-band optical OFDM signals modulated by 1GHz RSOAs
Lin, L. Y., Giddings, R. P., Tang, J., Zhang, Q., Salas, E. H., Ling, Y., Zhang, H., Giddings, R. & Wang, M., 9 Maw 2014.Allbwn ymchwil: Cyfraniad at gynhadledd › Papur