Title :
Non-linear spectral analysis of direct conversion wireless receivers
Author :
Bevilacqua, A. ; Svelto, F.
Author_Institution :
Dipt. di Elettronica e Inf., Padova Univ., Italy
Abstract :
We exploit spectral analysis to investigate the impact of non-linearities on the performance of wireless receivers, with particular reference to the direct conversion architecture. Actual interferer spectra and interferer magnitude fluctuations are methodically taken into account by modeling signals as Gaussian stochastic processes. Input-referred second-order and third-order intermodulation powers are found to be, respectively, 7.8 dB and 1.25 dB higher than predicted by the classic sinusoidal analysis. Time domain simulations carried out using the Universal Mobile Telecommunications System (UMTS) standard as test vehicle show excellent agreement with the developed analysis, which proves to be capable of accurate bit error rate (BER) predictions.
Keywords :
3G mobile communication; Gaussian processes; error statistics; intermodulation distortion; mobile radio; radio receivers; spectral analysis; BER; Gaussian stochastic processes; UMTS; Universal Mobile Telecommunications System; bit error rate; direct conversion wireless receivers; interferer magnitude fluctuations; interferer spectra; intermodulation distortion power; nonlinear spectral analysis; 3G mobile communication; Analytical models; Bit error rate; Fluctuations; Power system modeling; Predictive models; Signal processing; Spectral analysis; Stochastic processes; Time domain analysis;
Conference_Titel :
Radio and Wireless Conference, 2002. RAWCON 2002. IEEE
Print_ISBN :
0-7803-7458-4
DOI :
10.1109/RAWCON.2002.1030112
