Unequal power allocation to the turbo-encoder output bits with application to CDMA systems

@article{Mohammadi1999UnequalPA,
  title={Unequal power allocation to the turbo-encoder output bits with application to CDMA systems},
  author={Atousa H. S. Mohammadi and Amir K. Khandani},
  journal={IEEE Trans. Communications},
  year={1999},
  volume={47},
  pages={1609-1610}
}
Traditional Turbo-codes with binary phase-shift keying modulation assign equal noise margins to the Turbo-encoder output bits. It is shown that by using unequal power allocation (UPA) among the encoder output streams, one can improve the code performance especially for large block lengths. On the other hand, there has been a growing interest in the application of Turbo-codes for signaling over a code-division multiple-access (CDMA) channel. A usual practice in CDMA systems for matching of rate… CONTINUE READING

3 Figures & Tables

Extracted Numerical Results

  • As can be seen, for an improvement of about 0.5 in the [bit-error rate (BER)] can be achieved by repeating the parity bits seven times more than the systematic bits.

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