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Cross-correlated correlative encoding: an efficient modulation method

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2 Author(s)
C. Brown ; California Univ., Davis, CA, USA ; K. Feher

A new cross-correlated correlative baseband encoding scheme is presented as a means of doubling the capacity of a mobile communication systems without the cost of complex baseband filtering. System performance is studied in a non-linear amplified channel for 6 to 9 dB improved power efficiency. The system is analyzed for spectrum efficiency, adjacent channel interference (ACI), co-channel interference (CCI) and bit error rate (BER) performance in a Rayleigh faded cellular network. Computer simulated results and hardware experimentation show that modified correlative encoding achieves up to a 70% improvement in spectrum efficiency and double network capacity when compared to constant envelope GMSK modulation used in GSM, DCS1800, PCS1900 and DECT systems

Published in:

IEEE Transactions on Broadcasting  (Volume:43 ,  Issue: 1 )