Minimum BER transmission for TDD-CDMA in frequency-selective channels

  title={Minimum BER transmission for TDD-CDMA in frequency-selective channels},
  author={Ralf Irmer and Wolfgang Rave and Gerhard P. Fettweis},
A novel approach to Multiuser Transmission (MUT) for the CDMA downlink in frequency-selective channels is proposed. The key idea is to minimize the BER at the receivers directly by pre-distortion of the transmitted symbols. The BER can be predicted in the transmitter by calculating the signal at the receiver (including interference) exactly and treating only the additive noise at the receiver statistically. Using state-of-the-art nonlinear optimization methods like SQP (Sequential Quadratic… CONTINUE READING
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