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Symbol Detection in CDMA-OFDM Co-existence

Symbol Detection in CDMA-OFDM Co-existence. G V V Sharma (06407010) Aswani Kumar Ravi (06307R13) Nagaraj T (06307040) URL: www.ee.iitb.ac.in/student/~aswanikumar. Problem Statement. One user transmits the symbol b using CDMA (spreading

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Symbol Detection in CDMA-OFDM Co-existence

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  1. Symbol Detection in CDMA-OFDM Co-existence G V V Sharma (06407010) Aswani Kumar Ravi (06307R13) Nagaraj T (06307040) URL: www.ee.iitb.ac.in/student/~aswanikumar

  2. Problem Statement • One user transmits the symbol b using CDMA (spreading code). Another user transmits vector c using OFDM. Both use the same channel (carrier frequency). • OFDM demodulator output, assuming that the noise is AWGN y = br + c +n where n is complex circularly Gaussian, 2 the noise variance. • A minimum power distortionless response (MPDR) approach [1] has been used in [2] for symbol detection in the above model. • The Gaussian character of the noise was not exploited in the earlier method. • We wish to exploit this characteristic and use adaptive techniques for symbol detection.

  3. References : • H. L. Van Trees, Optimum Array Processing, John Wiley and Sons, NY 2002. • G. V. V. Sharma and S. H. Srinivasan, “Symbol Detection in CDMA-OFDM Coexistence,” IEEE PIMRC, 2005.

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