Title :
Accurate error probability estimate using moment method for decision-feedback equalization in digital cellular mobile radio with optimum diversity combining
Author :
Lin, Sheng-Chou ; Tsai, Juin-Ming
Author_Institution :
Dept. of Electron. Eng., Fu-Jen Catholic Univ., Taipei, Taiwan
Abstract :
This research provides fast and accurate performance analysis for optimum diversity combining and decision feedback equalization with quadrature amplitude modulation over frequency-selective fading channels. Many authors have studied the upper bound performance for such a diversity receiver, but the accurate performance has not been evaluated completely. In our analysis, the accurate error rate for the fading signal is obtained by using the moment method for each individual run in the quasi-analytical Monte-Carlo simulation. In this approach, simulation techniques are first used to evaluate the residual ISI in an equalized pulse response, and then moments of this ISI are calculated using a very fast and accurate recursive method of computation. Based on these moments, we use the series expansion to obtain the error rate of the system. Finally, we show that by using the moment method, the error rate estimation can be improved approximately by an order of 10 in average error rate and 4-5 in outage probability compared to the results obtained by the upper bound approach
Keywords :
Monte Carlo methods; cellular radio; decision feedback equalisers; digital radio; diversity reception; error statistics; fading channels; intersymbol interference; method of moments; quadrature amplitude modulation; recursive estimation; DFE; ISI; QAM; accurate error rate; accurate performance analysis; decision-feedback equalization; digital cellular mobile radio; diversity receiver; error probability estimation; error rate estimation; frequency-selective fading channels; moment method; optimum diversity combining; outage probability; quadrature amplitude modulation; quasi-analytical Monte-Carlo simulation; recursive method; series expansion; simulation techniques; Decision feedback equalizers; Diversity reception; Error analysis; Error probability; Frequency-selective fading channels; Intersymbol interference; Moment methods; Performance analysis; Quadrature amplitude modulation; Upper bound;
Conference_Titel :
Communications, 2001. ICC 2001. IEEE International Conference on
Conference_Location :
Helsinki
Print_ISBN :
0-7803-7097-1
DOI :
10.1109/ICC.2001.937241