Effects of Rayleigh fading on Spread-Spectrum signals and OFDM Signals

Jai Mantravadi

EE-745 Project Proposal

Abstract

Many communications schemes suffer from multi-path fading due to doppler spread. One way around multipath problems is Multi-Carrier Spread-Spectrum. I propose to study the effects of Rayleigh fading on a simple Spread-Spectrum signal, and then to compare the effects of using a OFDM to provide a Multi-Carrier Spread-Spectrum. The results should show that the OFDM signal is superior to multipath fading than the standard Spread-Spectrum signal. The simulation will be performed in Matlab using the Rayleigh multipath simulator developed in class.

 

References

  1. Helmut Bölcskei, Robert Heath, Arogyaswami Paulraj, IEEE Transactions On Signal Processing, Vol. 50, No. 1, January 2002 "Blind Channel Identification and Equalization in OFDM-Based Multiantenna Systems"
  2. Ye Li, Jack Winters, Nelson Sollenberger -0-7803-7097-1/01, 2001 IEEE, "Signal Detection for MIMO OFDM Wireless Communication",.
  3. A.Papathanassiou,A.K.Salkintzis,and P.T.Mathiopoulos -IEEE Personal Communications, June 2001, "A Comparison Study of the Uplink Performance of W-CDMA and OFDM for Mobile Multimedia Communications via LEO Satellites"
  4. Shengli Zhou, Georgios Giannakis, Ananthram Swami, -0-7803-6512-6, 2000 IEEE, "Frequency Hopped Generalized MC-CDMA For Multipath and Interference Suppresion",