In Wavelet Packets Based Multicarrier
Multicode CDMA system, the multicode (MCD) part ensures the transmission for
high speed and flexible data rate, the multicarrier (MC) part ensures the
flexibility of handling multiple data rates, and wavelet packets modulation
technique contributes to the mitigation of the interference problems. The CDMA
system can suppress a given amount of interference. In this paper, the
receiver employs suppression filter (SF) to mitigate the effect of narrow-band
jammer interference and diversity techniques to reduce multiple access
interference. The framework for the system and the performance evaluation are
presented in terms of bit error rate (BER) over a Nakagami fading channel.
Also, we investigate how the performance is influenced by various parameters,
such as the number of taps of the SF, the ratio of narrow-band interference
bandwidth to the spread-spectrum bandwidth, the diversity order, the fading
parameter and so on. Finally, the performance of the system is compared with
the performance Sinusoidal (Sin) based MC/MCD CDMA system.
References
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