Robustness Evaluation of OFDM and MC-DS-CDMA Systems in Digital High Voltage Power Line Communication Systems by Using LS Channel Estimation Technique

In this paper OFDM and MC-DS-CDMA techniques performances in down-stream (downlink) high voltage digital PLC (HV dPLC) system have been studied under the same overall working conditions (i.e., transmitted power and global data rate). By using MC-DS-CDMA we have a compromise between SNR and transmission bandwidth. However, by increasing the number of users we can attain a higher data rates for a given bandwidth. Comparisons show that by using least square (LS) channel estimation and comb type pilot frame format, MC-DS-CDMA outperforms OFDM under the same conditions at lower SNRs.

[1]  Power line noise model appropriate for investigation if channel coding methods , 2003, The IEEE Region 8 EUROCON 2003. Computer as a Tool..

[2]  Romano Fantacci,et al.  Comparison of CDMA and OFDM techniques for downstream power-line communications on low voltage grid , 2003 .

[3]  M. Zajc,et al.  Corona noise on a 400 kV overhead power line: Measurements and computer modeling , 2004 .

[4]  Marcello D'Amore,et al.  Digital generator of corona noise on power line carrier channels , 1988 .

[5]  Ralf Lehnert,et al.  Broadband powerline communications networks : network design , 2004 .

[6]  K. Fazel,et al.  Multi-Carrier and Spread Spectrum Systems: Fazel/Spread Spectrum , 2004 .

[7]  Khaled Fazel,et al.  Multi-Carrier and Spread Spectrum Systems , 2003 .

[8]  A. Purroy,et al.  Broadband PLC communication system in C band , 2005, Second IEEE Consumer Communications and Networking Conference, 2005. CCNC. 2005.

[9]  E. Gunawan,et al.  Analysis of impulsive noise and multipath effects on broadband power line communications , 2004, 2004 International Conference on Power System Technology, 2004. PowerCon 2004..

[10]  Lie-Liang Yang,et al.  Multicarrier DS-CDMA: a multiple access scheme for ubiquitous broadband wireless communications , 2003, IEEE Commun. Mag..

[11]  H. Vincent Poor,et al.  Advanced signal processing for power line communications , 2003, IEEE Commun. Mag..

[12]  Riccardo Raheli,et al.  Linear Predictive Detection for Power Line Communications Impaired by Colored Noise , 2006, 2006 IEEE International Symposium on Power Line Communications and Its Applications.

[13]  F. Rouissi,et al.  Precoded OFDM for power line broadband communication , 2003, Proceedings of the 2003 International Symposium on Circuits and Systems, 2003. ISCAS '03..

[14]  Masaaki Katayama.  Introduction to Robust, Reliable, and High-Speed Power-Line Communication Systems , 2001 .

[15]  M Zimmermann,et al.  A MULTI-PATH SIGNAL PROPAGATION MODEL FOR THE POWERLINE CHANNEL IN THE HIGH FREQUENCY RANGE , 1999 .

[16]  Sinem Coleri Ergen,et al.  Channel estimation techniques based on pilot arrangement in OFDM systems , 2002, IEEE Trans. Broadcast..

[18]  A. Alarcón,et al.  FUNDAMENTALS , 2000, Springer Monographs in Mathematics.