On the Sensitivity of IMT-DS Performance to System Parameters |
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| Authors: | Yuen Raymond H.M. Sheikh Asrar U.H. |
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| Affiliation: | (1) WISR Center, Department of Electronic and Information Engineering, the Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, P.R. China;(2) Department of Electrical Engineering, King Fahd University of Petroleum and Minerals, KFUPM Box 5038, Dhahran, 31261, Saudi Arabia |
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| Abstract: | IMT-DS, formerly known as Universal Terrestrial Radio Access (UTRA) system,is one of five radio interface standards adopted for the third generationIMT-2000 systems. In this paper, we present results of our investigation onthe sensitivity of IMT-DS performance to variations in the system parameters.In particular, the performance of a multi-rate IMT-DS system is investigatedfor different Rake structures, interleaving depths, and Doppler frequencies.An approximate expression for the bit error rate (BER) of a Rake receivermismatched to the number of signal paths is derived. It is shown that theperformance is dependent on inter-path-interference. An improvement inperformance is obtained if antenna diversity is combined with traditionallyused path diversity in Rake receivers. |
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| Keywords: | IMT-DS UTRA Rake receiver interleave Doppler BER |
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