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http://dx.doi.org/10.6109/jkiice.2007.11.11.2121

Performance of UWB Systems using Spatial Diversity in Multi-User Environments  

Baek, Sun-Young (동아대학교 전자공학과)
An, Jin-Young (동아대학교 전자공학과)
Lee, Sung-Sin (동아대학교 전자공학과 BK21)
Kim, Sang-Choon (동아대학교 전자공학과)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.11, no.11, 2007 , pp. 2121-2126 More about this Journal
Abstract
In this paper, the performance improvement of ultra-wideband(UWB) communications system to achieve high-data-rate using spatial diversity provided by multiple receive antennas is investigated. We derive the expression for the received SINR after spatially combining through multiple receive antennas and evaluate the bit error rate(BER) performance by numerical simulation. We also compare the performance results in the case of 2PPM systems with the theoretical performance results in the case of 2PAM THMA UWB systems. The impacts of spatial diversity on the performance of 2PPM and 2PAM THMA UWB systems are analyzed. It is shown that the BER performance is improved as the number of receive antennas increases. Also, it is observed that in the presence of multiple user interference signals, the performance of 2PAM THMA UWB systems is considerably superior to that of 2PPM THMA UWB systems.
Keywords
binary pulse position modulation; pulse amplitude modulation; time hopping multiple access; ultra wide band;
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