Oversampling to reduce the effect of timing jitter on high speed OFDM systems

The impairments caused by timing jitter are a significant limiting factor in the performance of very high data rate OFDM systems. In this letter we show that oversampling can reduce the noise caused by timing jitter. Both fractional oversampling achieved by leaving some band-edge OFDM subcarriers unused and integral oversampling are considered. The theoretical results are compared with simulation results for the case of white timing jitter showing very close agreement. Oversampling results in a 3 dB reduction in jitter noise power for every doubling of the sampling rate.

[1]  M. Waltari,et al.  A 10-bit 200 MS/s CMOS parallel pipeline A/D converter , 2001, Proceedings of the 26th European Solid-State Circuits Conference.

[2]  Ganesan Thiagarajan,et al.  The effect of sampling jitter in OFDM systems , 2003, IEEE International Conference on Communications, 2003. ICC '03..

[3]  R.D. Younger,et al.  Timing jitter in short-distance pulsed-analog optical fiber links , 2003, 2003 Digest of LEOS Summer Topical Meeting (Cat. No.03TH8701).

[4]  V.S. Reinhardt.  A review of time jitter and digital systems , 2005, Proceedings of the 2005 IEEE International Frequency Control Symposium and Exposition, 2005..

[5]  C.W. Bostian,et al.  Analog to Digital Converters , 2020, Embedded Systems Design using the MSP430FR2355 LaunchPad™.

[6]  Jean Armstrong,et al.  10Gbit/s Multimode Fiber Link using Power-Efficient Orthogonal-Frequency-Division Multiplexing. , 2005, Optics express.

[7]  Jean Armstrong,et al.  Power efficient optical OFDM , 2006 .

[8]  Geoffrey Ye Li,et al.  Effect of timing jitter on OFDM-based UWB systems , 2006, IEEE Journal on Selected Areas in Communications.

[9]  William Shieh,et al.  Coherent optical orthogonal frequency division multiplexing , 2006 .

[10]  Rafael Perez-Jimenez,et al.  Adaptive OFDM system for communications over the indoor wireless optical channel , 2006 .

[11]  Xia Li,et al.  Channel Capacity of IM/DD Optical Communication Systems and of ACO-OFDM , 2007, 2007 IEEE International Conference on Communications.

[12]  A.J. Lowery,et al.  Experimental Demonstrations of Electronic Dispersion Compensation for Long-Haul Transmission Using Direct-Detection Optical OFDM , 2008, Journal of Lightwave Technology.

[13]  Itsuro Morita,et al.  10x121.9-Gb/s PDM-OFDM Transmission with 2-b/s/Hz Spectral Efficiency over 1,000 km of SSMF , 2008 .

[14]  Jean Armstrong,et al.  Comparison of Asymmetrically Clipped Optical OFDM and DC-Biased Optical OFDM in AWGN , 2008, IEEE Communications Letters.

[15]  I. Morita,et al.  Coherent Optical 25.8-Gb/s OFDM Transmission Over 4160-km SSMF , 2008, Journal of Lightwave Technology.

[16]  Jean Armstrong,et al.  Digital Modulation Techniques for Optical Asymmetrically-Clipped OFDM , 2008, 2008 IEEE Wireless Communications and Networking Conference.

[17]  The Effect of Timing Jitter on High-speed OFDM Systems , 2009, 2009 Australian Communications Theory Workshop.

[18]  J. Armstrong,et al.  OFDM for Optical Communications , 2009, Journal of Lightwave Technology.

[19]  Mikko Valkama,et al.  Jitter Mitigation in High-Frequency Bandpass-Sampling OFDM Radios , 2009, 2009 IEEE Wireless Communications and Networking Conference.