Theoretical analysis and performance of the decorrelating detector for DS-CDMA signals in nonlinear channels |
| |
| Authors: | Rugini L. Banelli P. Cacopardi S. |
| |
| Affiliation: | Dipt. di Ingegneria Elettronica e dell'Informazione, Univ. di Perugia, Italy; |
| |
| Abstract: | We analyze the effects of the nonlinear distortions, introduced by the transmitting high-power amplifier (HPA), on the performance of the linear decorrelating multiuser detector in direct-sequence code-division multiple-access (DS-CDMA) downlink systems. By assuming and motivating the Gaussian distribution of the nonlinear distortion noise, the symbol-error rate (SER) and the total degradation (TD) has been derived theoretically in additive white Gaussian noise (AWGN) and frequency-flat Rayleigh fading channels. Simulation results show that the analytical model is quite accurate in many scenarios. |
| |
| Keywords: | |
|
|
